./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label41.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_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/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_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label41.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/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_3ab9735f-103d-46e3-becb-9f46c23c1f0a/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 40a5d6cfc2906fb78e842e2acc20834b9d9ef51616470f27f80518312cafa40b ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 10:17:01,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:17:01,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:17:01,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:17:01,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:17:01,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:17:01,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:17:01,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:17:01,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:17:01,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:17:01,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:17:01,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:17:01,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:17:01,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:17:01,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:17:01,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:17:01,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:17:01,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:17:01,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:17:01,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:17:01,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:17:01,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:17:01,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:17:01,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:17:01,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:17:01,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:17:01,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:17:01,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:17:01,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:17:01,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:17:01,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:17:01,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:17:01,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:17:01,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:17:01,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:17:01,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:17:01,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:17:01,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:17:01,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:17:01,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:17:01,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:17:01,975 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:17:02,023 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:17:02,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:17:02,024 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:17:02,024 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:17:02,025 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:17:02,025 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:17:02,025 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:17:02,025 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:17:02,025 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:17:02,026 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:17:02,026 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:17:02,026 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:17:02,026 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:17:02,026 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:17:02,026 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:17:02,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:17:02,027 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:17:02,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:17:02,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:17:02,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:17:02,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:17:02,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:17:02,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:17:02,037 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:17:02,037 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:17:02,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:17:02,037 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:17:02,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:17:02,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:17:02,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:17:02,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:17:02,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:17:02,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:17:02,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:17:02,039 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:17:02,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:17:02,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:17:02,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:17:02,040 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:17:02,041 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_3ab9735f-103d-46e3-becb-9f46c23c1f0a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40a5d6cfc2906fb78e842e2acc20834b9d9ef51616470f27f80518312cafa40b [2021-10-24 10:17:02,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:17:02,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:17:02,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:17:02,334 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:17:02,335 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:17:02,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/eca-rers2012/Problem02_label41.c [2021-10-24 10:17:02,434 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/data/60ff0605a/f9c5e172535d45918ed433fa11350074/FLAGb1670cbbb [2021-10-24 10:17:03,069 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:17:03,070 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/sv-benchmarks/c/eca-rers2012/Problem02_label41.c [2021-10-24 10:17:03,104 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/data/60ff0605a/f9c5e172535d45918ed433fa11350074/FLAGb1670cbbb [2021-10-24 10:17:03,342 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/data/60ff0605a/f9c5e172535d45918ed433fa11350074 [2021-10-24 10:17:03,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:17:03,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:17:03,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:17:03,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:17:03,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:17:03,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:17:03" (1/1) ... [2021-10-24 10:17:03,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f45d038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:03, skipping insertion in model container [2021-10-24 10:17:03,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:17:03" (1/1) ... [2021-10-24 10:17:03,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:17:03,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:17:03,702 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_3ab9735f-103d-46e3-becb-9f46c23c1f0a/sv-benchmarks/c/eca-rers2012/Problem02_label41.c[15650,15663] [2021-10-24 10:17:03,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:17:03,801 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:17:03,881 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_3ab9735f-103d-46e3-becb-9f46c23c1f0a/sv-benchmarks/c/eca-rers2012/Problem02_label41.c[15650,15663] [2021-10-24 10:17:03,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:17:03,914 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:17:03,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:03 WrapperNode [2021-10-24 10:17:03,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:17:03,916 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:17:03,917 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:17:03,917 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:17:03,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:03" (1/1) ... [2021-10-24 10:17:03,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:03" (1/1) ... [2021-10-24 10:17:04,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:17:04,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:17:04,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:17:04,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:17:04,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:03" (1/1) ... [2021-10-24 10:17:04,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:03" (1/1) ... [2021-10-24 10:17:04,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:03" (1/1) ... [2021-10-24 10:17:04,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:03" (1/1) ... [2021-10-24 10:17:04,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:03" (1/1) ... [2021-10-24 10:17:04,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:03" (1/1) ... [2021-10-24 10:17:04,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:03" (1/1) ... [2021-10-24 10:17:04,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:17:04,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:17:04,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:17:04,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:17:04,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:03" (1/1) ... [2021-10-24 10:17:04,152 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:17:04,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:17:04,176 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:17:04,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:17:04,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:17:04,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:17:04,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:17:04,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:17:06,290 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:17:06,290 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-24 10:17:06,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:17:06 BoogieIcfgContainer [2021-10-24 10:17:06,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:17:06,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:17:06,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:17:06,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:17:06,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:17:03" (1/3) ... [2021-10-24 10:17:06,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ae418a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:17:06, skipping insertion in model container [2021-10-24 10:17:06,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:03" (2/3) ... [2021-10-24 10:17:06,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ae418a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:17:06, skipping insertion in model container [2021-10-24 10:17:06,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:17:06" (3/3) ... [2021-10-24 10:17:06,305 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label41.c [2021-10-24 10:17:06,312 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:17:06,312 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:17:06,384 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:17:06,395 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 10:17:06,396 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 10:17:06,417 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:17:06,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-24 10:17:06,433 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:06,434 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:17:06,434 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:17:06,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:06,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1814570964, now seen corresponding path program 1 times [2021-10-24 10:17:06,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:17:06,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529565325] [2021-10-24 10:17:06,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:06,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:17:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:06,894 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 10:17:06,894 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:17:06,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529565325] [2021-10-24 10:17:06,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529565325] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:17:06,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:17:06,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:17:06,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275786165] [2021-10-24 10:17:06,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:17:06,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:17:06,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:17:06,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:06,925 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:17:07,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:17:07,358 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-24 10:17:07,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:17:07,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-24 10:17:07,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:17:07,373 INFO L225 Difference]: With dead ends: 251 [2021-10-24 10:17:07,373 INFO L226 Difference]: Without dead ends: 163 [2021-10-24 10:17:07,376 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:07,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-24 10:17:07,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-24 10:17:07,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.8395061728395061) internal successors, (298), 162 states have internal predecessors, (298), 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 10:17:07,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2021-10-24 10:17:07,434 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2021-10-24 10:17:07,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:17:07,435 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2021-10-24 10:17:07,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:17:07,435 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2021-10-24 10:17:07,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-24 10:17:07,439 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:07,440 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:17:07,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:17:07,440 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:17:07,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:07,441 INFO L82 PathProgramCache]: Analyzing trace with hash 625143625, now seen corresponding path program 1 times [2021-10-24 10:17:07,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:17:07,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320010710] [2021-10-24 10:17:07,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:07,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:17:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:07,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:17:07,557 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:17:07,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320010710] [2021-10-24 10:17:07,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320010710] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:17:07,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:17:07,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:17:07,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411364750] [2021-10-24 10:17:07,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:17:07,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:17:07,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:17:07,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:07,565 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:17:07,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:17:07,994 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2021-10-24 10:17:07,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:17:07,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-10-24 10:17:07,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:17:07,999 INFO L225 Difference]: With dead ends: 485 [2021-10-24 10:17:07,999 INFO L226 Difference]: Without dead ends: 323 [2021-10-24 10:17:08,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:08,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-24 10:17:08,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-24 10:17:08,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.5) internal successors, (483), 322 states have internal predecessors, (483), 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 10:17:08,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 483 transitions. [2021-10-24 10:17:08,035 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 483 transitions. Word has length 84 [2021-10-24 10:17:08,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:17:08,036 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 483 transitions. [2021-10-24 10:17:08,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:17:08,036 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 483 transitions. [2021-10-24 10:17:08,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-24 10:17:08,040 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:08,040 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:17:08,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 10:17:08,041 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:17:08,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:08,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1659819540, now seen corresponding path program 1 times [2021-10-24 10:17:08,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:17:08,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060386235] [2021-10-24 10:17:08,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:08,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:17:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:08,101 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:17:08,101 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:17:08,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060386235] [2021-10-24 10:17:08,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060386235] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:17:08,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:17:08,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:17:08,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356769335] [2021-10-24 10:17:08,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:17:08,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:17:08,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:17:08,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:08,104 INFO L87 Difference]: Start difference. First operand 323 states and 483 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 10:17:08,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:17:08,482 INFO L93 Difference]: Finished difference Result 805 states and 1261 transitions. [2021-10-24 10:17:08,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:17:08,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 89 [2021-10-24 10:17:08,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:17:08,486 INFO L225 Difference]: With dead ends: 805 [2021-10-24 10:17:08,486 INFO L226 Difference]: Without dead ends: 483 [2021-10-24 10:17:08,491 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:08,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-10-24 10:17:08,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2021-10-24 10:17:08,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.396265560165975) internal successors, (673), 482 states have internal predecessors, (673), 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 10:17:08,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 673 transitions. [2021-10-24 10:17:08,516 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 673 transitions. Word has length 89 [2021-10-24 10:17:08,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:17:08,517 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 673 transitions. [2021-10-24 10:17:08,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 10:17:08,517 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 673 transitions. [2021-10-24 10:17:08,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-24 10:17:08,524 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:08,524 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:17:08,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 10:17:08,525 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:17:08,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:08,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1696179864, now seen corresponding path program 1 times [2021-10-24 10:17:08,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:17:08,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083266826] [2021-10-24 10:17:08,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:08,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:17:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:08,573 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:17:08,574 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:17:08,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083266826] [2021-10-24 10:17:08,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083266826] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:17:08,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:17:08,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:17:08,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068071121] [2021-10-24 10:17:08,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:17:08,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:17:08,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:17:08,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:08,577 INFO L87 Difference]: Start difference. First operand 483 states and 673 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:17:08,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:17:08,957 INFO L93 Difference]: Finished difference Result 1285 states and 1831 transitions. [2021-10-24 10:17:08,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:17:08,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-24 10:17:08,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:17:08,962 INFO L225 Difference]: With dead ends: 1285 [2021-10-24 10:17:08,963 INFO L226 Difference]: Without dead ends: 803 [2021-10-24 10:17:08,965 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:08,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2021-10-24 10:17:08,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2021-10-24 10:17:08,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 1.35785536159601) internal successors, (1089), 802 states have internal predecessors, (1089), 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 10:17:08,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1089 transitions. [2021-10-24 10:17:08,996 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1089 transitions. Word has length 90 [2021-10-24 10:17:08,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:17:08,996 INFO L470 AbstractCegarLoop]: Abstraction has 803 states and 1089 transitions. [2021-10-24 10:17:08,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:17:08,997 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1089 transitions. [2021-10-24 10:17:09,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-24 10:17:09,011 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:09,011 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:17:09,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-24 10:17:09,011 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:17:09,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:09,012 INFO L82 PathProgramCache]: Analyzing trace with hash -80530762, now seen corresponding path program 1 times [2021-10-24 10:17:09,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:17:09,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310009907] [2021-10-24 10:17:09,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:09,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:17:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:09,104 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:17:09,105 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:17:09,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310009907] [2021-10-24 10:17:09,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310009907] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:17:09,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:17:09,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:17:09,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370886580] [2021-10-24 10:17:09,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:17:09,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:17:09,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:17:09,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:09,107 INFO L87 Difference]: Start difference. First operand 803 states and 1089 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 10:17:09,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:17:09,490 INFO L93 Difference]: Finished difference Result 1925 states and 2603 transitions. [2021-10-24 10:17:09,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:17:09,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 93 [2021-10-24 10:17:09,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:17:09,498 INFO L225 Difference]: With dead ends: 1925 [2021-10-24 10:17:09,498 INFO L226 Difference]: Without dead ends: 1123 [2021-10-24 10:17:09,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:09,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2021-10-24 10:17:09,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2021-10-24 10:17:09,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.2780748663101604) internal successors, (1434), 1122 states have internal predecessors, (1434), 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 10:17:09,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1434 transitions. [2021-10-24 10:17:09,548 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1434 transitions. Word has length 93 [2021-10-24 10:17:09,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:17:09,549 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1434 transitions. [2021-10-24 10:17:09,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 10:17:09,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1434 transitions. [2021-10-24 10:17:09,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-10-24 10:17:09,553 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:09,553 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:17:09,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-24 10:17:09,554 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:17:09,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:09,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1105143259, now seen corresponding path program 1 times [2021-10-24 10:17:09,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:17:09,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420396022] [2021-10-24 10:17:09,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:09,556 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:17:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:09,668 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:17:09,669 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:17:09,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420396022] [2021-10-24 10:17:09,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420396022] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:17:09,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:17:09,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:17:09,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182939880] [2021-10-24 10:17:09,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:17:09,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:17:09,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:17:09,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:09,672 INFO L87 Difference]: Start difference. First operand 1123 states and 1434 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 10:17:10,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:17:10,008 INFO L93 Difference]: Finished difference Result 2245 states and 2867 transitions. [2021-10-24 10:17:10,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:17:10,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-10-24 10:17:10,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:17:10,017 INFO L225 Difference]: With dead ends: 2245 [2021-10-24 10:17:10,017 INFO L226 Difference]: Without dead ends: 1123 [2021-10-24 10:17:10,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:10,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2021-10-24 10:17:10,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2021-10-24 10:17:10,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.2290552584670231) internal successors, (1379), 1122 states have internal predecessors, (1379), 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 10:17:10,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1379 transitions. [2021-10-24 10:17:10,065 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1379 transitions. Word has length 109 [2021-10-24 10:17:10,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:17:10,065 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1379 transitions. [2021-10-24 10:17:10,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 10:17:10,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1379 transitions. [2021-10-24 10:17:10,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-24 10:17:10,069 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:10,069 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:17:10,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-24 10:17:10,070 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:17:10,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:10,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1872796143, now seen corresponding path program 1 times [2021-10-24 10:17:10,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:17:10,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351313967] [2021-10-24 10:17:10,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:10,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:17:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:10,209 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 32 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:17:10,209 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:17:10,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351313967] [2021-10-24 10:17:10,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351313967] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 10:17:10,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794612800] [2021-10-24 10:17:10,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:10,211 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:17:10,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:17:10,216 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:17:10,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 10:17:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:10,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:17:10,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:17:10,858 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-24 10:17:10,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:17:11,142 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-24 10:17:11,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794612800] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:17:11,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-24 10:17:11,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-24 10:17:11,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12038898] [2021-10-24 10:17:11,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:17:11,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:17:11,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:17:11,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:17:11,146 INFO L87 Difference]: Start difference. First operand 1123 states and 1379 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 10:17:11,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:17:11,509 INFO L93 Difference]: Finished difference Result 2405 states and 3033 transitions. [2021-10-24 10:17:11,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:17:11,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-10-24 10:17:11,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:17:11,521 INFO L225 Difference]: With dead ends: 2405 [2021-10-24 10:17:11,522 INFO L226 Difference]: Without dead ends: 1283 [2021-10-24 10:17:11,523 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.2ms TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:17:11,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-10-24 10:17:11,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1283. [2021-10-24 10:17:11,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1282 states have (on average 1.2316692667706708) internal successors, (1579), 1282 states have internal predecessors, (1579), 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 10:17:11,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1579 transitions. [2021-10-24 10:17:11,582 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1579 transitions. Word has length 113 [2021-10-24 10:17:11,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:17:11,584 INFO L470 AbstractCegarLoop]: Abstraction has 1283 states and 1579 transitions. [2021-10-24 10:17:11,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 10:17:11,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1579 transitions. [2021-10-24 10:17:11,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-10-24 10:17:11,588 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:11,588 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:17:11,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:17:11,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:17:11,816 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:17:11,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:11,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1413206854, now seen corresponding path program 1 times [2021-10-24 10:17:11,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:17:11,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914123678] [2021-10-24 10:17:11,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:11,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:17:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:12,035 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 10:17:12,035 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:17:12,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914123678] [2021-10-24 10:17:12,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914123678] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:17:12,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:17:12,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:17:12,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397902629] [2021-10-24 10:17:12,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:17:12,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:17:12,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:17:12,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:17:12,038 INFO L87 Difference]: Start difference. First operand 1283 states and 1579 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 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 10:17:12,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:17:12,585 INFO L93 Difference]: Finished difference Result 3043 states and 3761 transitions. [2021-10-24 10:17:12,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:17:12,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 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 114 [2021-10-24 10:17:12,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:17:12,596 INFO L225 Difference]: With dead ends: 3043 [2021-10-24 10:17:12,596 INFO L226 Difference]: Without dead ends: 1683 [2021-10-24 10:17:12,598 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:17:12,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2021-10-24 10:17:12,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1363. [2021-10-24 10:17:12,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1362 states have (on average 1.2305433186490455) internal successors, (1676), 1362 states have internal predecessors, (1676), 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 10:17:12,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1676 transitions. [2021-10-24 10:17:12,640 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1676 transitions. Word has length 114 [2021-10-24 10:17:12,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:17:12,640 INFO L470 AbstractCegarLoop]: Abstraction has 1363 states and 1676 transitions. [2021-10-24 10:17:12,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 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 10:17:12,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1676 transitions. [2021-10-24 10:17:12,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-10-24 10:17:12,644 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:12,645 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:17:12,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-24 10:17:12,645 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:17:12,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:12,646 INFO L82 PathProgramCache]: Analyzing trace with hash -857792788, now seen corresponding path program 1 times [2021-10-24 10:17:12,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:17:12,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862488953] [2021-10-24 10:17:12,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:12,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:17:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:12,769 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 54 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-24 10:17:12,770 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:17:12,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862488953] [2021-10-24 10:17:12,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862488953] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 10:17:12,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668271302] [2021-10-24 10:17:12,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:12,771 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:17:12,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:17:12,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:17:12,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 10:17:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:12,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:17:12,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:17:13,219 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-24 10:17:13,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:17:13,479 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-24 10:17:13,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668271302] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:17:13,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-24 10:17:13,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 7 [2021-10-24 10:17:13,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088351843] [2021-10-24 10:17:13,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:17:13,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:17:13,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:17:13,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:17:13,483 INFO L87 Difference]: Start difference. First operand 1363 states and 1676 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 10:17:14,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:17:14,046 INFO L93 Difference]: Finished difference Result 3525 states and 4457 transitions. [2021-10-24 10:17:14,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:17:14,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 127 [2021-10-24 10:17:14,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:17:14,057 INFO L225 Difference]: With dead ends: 3525 [2021-10-24 10:17:14,057 INFO L226 Difference]: Without dead ends: 2163 [2021-10-24 10:17:14,059 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.1ms TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:17:14,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2021-10-24 10:17:14,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 2083. [2021-10-24 10:17:14,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 2082 states have (on average 1.2036503362151778) internal successors, (2506), 2082 states have internal predecessors, (2506), 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 10:17:14,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2506 transitions. [2021-10-24 10:17:14,138 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2506 transitions. Word has length 127 [2021-10-24 10:17:14,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:17:14,139 INFO L470 AbstractCegarLoop]: Abstraction has 2083 states and 2506 transitions. [2021-10-24 10:17:14,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 10:17:14,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2506 transitions. [2021-10-24 10:17:14,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-10-24 10:17:14,144 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:14,145 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:17:14,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:17:14,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:17:14,360 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:17:14,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:14,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1320242758, now seen corresponding path program 1 times [2021-10-24 10:17:14,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:17:14,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027182999] [2021-10-24 10:17:14,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:14,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:17:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:14,478 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 64 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-24 10:17:14,478 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:17:14,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027182999] [2021-10-24 10:17:14,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027182999] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 10:17:14,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780280750] [2021-10-24 10:17:14,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:14,479 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:17:14,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:17:14,480 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:17:14,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-24 10:17:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:14,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:17:14,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:17:15,102 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-10-24 10:17:15,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:17:15,501 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-10-24 10:17:15,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780280750] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:17:15,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-24 10:17:15,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 7 [2021-10-24 10:17:15,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377663926] [2021-10-24 10:17:15,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:17:15,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:17:15,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:17:15,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:17:15,506 INFO L87 Difference]: Start difference. First operand 2083 states and 2506 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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 10:17:16,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:17:16,067 INFO L93 Difference]: Finished difference Result 4725 states and 5768 transitions. [2021-10-24 10:17:16,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:17:16,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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 140 [2021-10-24 10:17:16,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:17:16,081 INFO L225 Difference]: With dead ends: 4725 [2021-10-24 10:17:16,082 INFO L226 Difference]: Without dead ends: 2323 [2021-10-24 10:17:16,086 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.3ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:17:16,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2323 states. [2021-10-24 10:17:16,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2323 to 2243. [2021-10-24 10:17:16,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2243 states, 2242 states have (on average 1.1436217662801071) internal successors, (2564), 2242 states have internal predecessors, (2564), 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 10:17:16,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 2564 transitions. [2021-10-24 10:17:16,154 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 2564 transitions. Word has length 140 [2021-10-24 10:17:16,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:17:16,154 INFO L470 AbstractCegarLoop]: Abstraction has 2243 states and 2564 transitions. [2021-10-24 10:17:16,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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 10:17:16,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 2564 transitions. [2021-10-24 10:17:16,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-10-24 10:17:16,161 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:16,161 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:17:16,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:17:16,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-24 10:17:16,388 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:17:16,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:16,388 INFO L82 PathProgramCache]: Analyzing trace with hash -816363474, now seen corresponding path program 1 times [2021-10-24 10:17:16,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:17:16,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131914989] [2021-10-24 10:17:16,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:16,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:17:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:16,465 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-24 10:17:16,465 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:17:16,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131914989] [2021-10-24 10:17:16,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131914989] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:17:16,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:17:16,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:17:16,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249361563] [2021-10-24 10:17:16,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:17:16,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:17:16,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:17:16,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:16,470 INFO L87 Difference]: Start difference. First operand 2243 states and 2564 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 10:17:16,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:17:16,752 INFO L93 Difference]: Finished difference Result 5045 states and 5752 transitions. [2021-10-24 10:17:16,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:17:16,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 170 [2021-10-24 10:17:16,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:17:16,764 INFO L225 Difference]: With dead ends: 5045 [2021-10-24 10:17:16,764 INFO L226 Difference]: Without dead ends: 2083 [2021-10-24 10:17:16,768 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:16,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2021-10-24 10:17:16,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 2083. [2021-10-24 10:17:16,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 2082 states have (on average 1.111911623439001) internal successors, (2315), 2082 states have internal predecessors, (2315), 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 10:17:16,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2315 transitions. [2021-10-24 10:17:16,822 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2315 transitions. Word has length 170 [2021-10-24 10:17:16,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:17:16,822 INFO L470 AbstractCegarLoop]: Abstraction has 2083 states and 2315 transitions. [2021-10-24 10:17:16,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 10:17:16,823 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2315 transitions. [2021-10-24 10:17:16,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-10-24 10:17:16,828 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:16,829 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:17:16,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-24 10:17:16,829 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:17:16,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:16,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1788635523, now seen corresponding path program 1 times [2021-10-24 10:17:16,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:17:16,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725095049] [2021-10-24 10:17:16,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:16,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:17:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:16,964 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 96 proven. 8 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-10-24 10:17:16,964 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:17:16,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725095049] [2021-10-24 10:17:16,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725095049] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 10:17:16,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004121770] [2021-10-24 10:17:16,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:16,965 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:17:16,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:17:16,972 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:17:16,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-24 10:17:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:17,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:17:17,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:17:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-10-24 10:17:17,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:17:18,382 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-10-24 10:17:18,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004121770] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:17:18,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-24 10:17:18,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-24 10:17:18,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749377152] [2021-10-24 10:17:18,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:17:18,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:17:18,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:17:18,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:17:18,385 INFO L87 Difference]: Start difference. First operand 2083 states and 2315 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 10:17:18,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:17:18,646 INFO L93 Difference]: Finished difference Result 4485 states and 4976 transitions. [2021-10-24 10:17:18,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:17:18,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 194 [2021-10-24 10:17:18,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:17:18,653 INFO L225 Difference]: With dead ends: 4485 [2021-10-24 10:17:18,653 INFO L226 Difference]: Without dead ends: 1123 [2021-10-24 10:17:18,657 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.6ms TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:17:18,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2021-10-24 10:17:18,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2021-10-24 10:17:18,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.067736185383244) internal successors, (1198), 1122 states have internal predecessors, (1198), 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 10:17:18,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1198 transitions. [2021-10-24 10:17:18,686 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1198 transitions. Word has length 194 [2021-10-24 10:17:18,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:17:18,686 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1198 transitions. [2021-10-24 10:17:18,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 10:17:18,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1198 transitions. [2021-10-24 10:17:18,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-10-24 10:17:18,691 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:18,692 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:17:18,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-24 10:17:18,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-24 10:17:18,907 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:17:18,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:18,908 INFO L82 PathProgramCache]: Analyzing trace with hash -514972330, now seen corresponding path program 1 times [2021-10-24 10:17:18,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:17:18,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476598402] [2021-10-24 10:17:18,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:18,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:17:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:19,035 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-24 10:17:19,035 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:17:19,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476598402] [2021-10-24 10:17:19,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476598402] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:17:19,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:17:19,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:17:19,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235683158] [2021-10-24 10:17:19,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:17:19,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:17:19,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:17:19,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:17:19,038 INFO L87 Difference]: Start difference. First operand 1123 states and 1198 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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 10:17:19,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:17:19,244 INFO L93 Difference]: Finished difference Result 1363 states and 1446 transitions. [2021-10-24 10:17:19,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:17:19,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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 228 [2021-10-24 10:17:19,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:17:19,246 INFO L225 Difference]: With dead ends: 1363 [2021-10-24 10:17:19,246 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:17:19,248 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:17:19,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:17:19,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:17:19,248 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 10:17:19,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:17:19,249 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 228 [2021-10-24 10:17:19,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:17:19,249 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:17:19,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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 10:17:19,250 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:17:19,250 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:17:19,253 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:17:19,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-24 10:17:19,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 10:17:19,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:17:19,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:17:19,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:17:19,746 INFO L857 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-24 10:17:19,746 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-24 10:17:19,746 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-24 10:17:19,746 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-24 10:17:19,746 INFO L857 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-24 10:17:19,747 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-24 10:17:19,747 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-24 10:17:19,747 INFO L857 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-24 10:17:19,747 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-24 10:17:19,747 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-24 10:17:19,747 INFO L857 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-24 10:17:19,747 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-24 10:17:19,747 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-24 10:17:19,747 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-24 10:17:19,747 INFO L857 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-24 10:17:19,747 INFO L857 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-24 10:17:19,748 INFO L857 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-24 10:17:19,748 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-24 10:17:19,748 INFO L857 garLoopResultBuilder]: For program point L448-1(lines 39 608) no Hoare annotation was computed. [2021-10-24 10:17:19,748 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-24 10:17:19,748 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-24 10:17:19,748 INFO L857 garLoopResultBuilder]: For program point L451-1(lines 39 608) no Hoare annotation was computed. [2021-10-24 10:17:19,748 INFO L857 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-24 10:17:19,748 INFO L857 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-24 10:17:19,748 INFO L857 garLoopResultBuilder]: For program point L452(line 452) no Hoare annotation was computed. [2021-10-24 10:17:19,748 INFO L857 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-24 10:17:19,748 INFO L857 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-24 10:17:19,749 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-24 10:17:19,749 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-24 10:17:19,749 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 10:17:19,749 INFO L857 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-24 10:17:19,749 INFO L857 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-24 10:17:19,749 INFO L857 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-24 10:17:19,749 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-24 10:17:19,749 INFO L857 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-24 10:17:19,749 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-24 10:17:19,749 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-24 10:17:19,749 INFO L857 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-24 10:17:19,749 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-24 10:17:19,750 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 452) no Hoare annotation was computed. [2021-10-24 10:17:19,750 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-24 10:17:19,750 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-24 10:17:19,750 INFO L857 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-24 10:17:19,750 INFO L857 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-24 10:17:19,750 INFO L857 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-24 10:17:19,750 INFO L857 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-24 10:17:19,750 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-24 10:17:19,750 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-24 10:17:19,750 INFO L857 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-24 10:17:19,750 INFO L857 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-24 10:17:19,751 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-24 10:17:19,751 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-24 10:17:19,751 INFO L857 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-24 10:17:19,751 INFO L857 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-24 10:17:19,751 INFO L857 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-24 10:17:19,751 INFO L857 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-24 10:17:19,752 INFO L853 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse4 (= ~a25~0 1))) (let ((.cse3 (<= ~a19~0 0)) (.cse7 (< ~a28~0 10)) (.cse8 (< 8 ~a28~0)) (.cse0 (<= ~a17~0 7)) (.cse2 (not .cse4)) (.cse10 (<= 10 ~a28~0)) (.cse5 (= ~a11~0 0)) (.cse1 (<= ~a28~0 10)) (.cse9 (<= ~a28~0 7)) (.cse11 (= ~a17~0 8)) (.cse12 (= ~a21~0 1)) (.cse6 (= ~a19~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse6) (and .cse7 .cse0 .cse8) (and .cse7 .cse3) (and .cse7 .cse0 .cse6) (and .cse5 .cse6 .cse9) (and .cse5 .cse1 .cse6 .cse8) (and .cse10 .cse1 .cse2 .cse6) (and .cse11 .cse12 .cse1 .cse6 .cse8) (and .cse0 .cse2 .cse6) (and .cse10 .cse4 .cse5 .cse1) (and .cse11 .cse4 .cse12 .cse6 .cse9) (and .cse11 (<= 11 ~a28~0) .cse4 .cse12 .cse6)))) [2021-10-24 10:17:19,752 INFO L857 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-24 10:17:19,752 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-24 10:17:19,752 INFO L860 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-24 10:17:19,752 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-24 10:17:19,752 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-24 10:17:19,752 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-24 10:17:19,752 INFO L857 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-24 10:17:19,752 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-24 10:17:19,752 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 10:17:19,752 INFO L857 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-24 10:17:19,753 INFO L857 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-24 10:17:19,753 INFO L853 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse4 (= ~a25~0 1))) (let ((.cse3 (<= ~a19~0 0)) (.cse7 (< ~a28~0 10)) (.cse8 (< 8 ~a28~0)) (.cse0 (<= ~a17~0 7)) (.cse2 (not .cse4)) (.cse10 (<= 10 ~a28~0)) (.cse5 (= ~a11~0 0)) (.cse1 (<= ~a28~0 10)) (.cse9 (<= ~a28~0 7)) (.cse11 (= ~a17~0 8)) (.cse12 (= ~a21~0 1)) (.cse6 (= ~a19~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse6) (and .cse7 .cse0 .cse8) (and .cse7 .cse3) (and .cse7 .cse0 .cse6) (and .cse5 .cse6 .cse9) (and .cse5 .cse1 .cse6 .cse8) (and .cse10 .cse1 .cse2 .cse6) (and .cse11 .cse12 .cse1 .cse6 .cse8) (and .cse0 .cse2 .cse6) (and .cse10 .cse4 .cse5 .cse1) (and .cse11 .cse4 .cse12 .cse6 .cse9) (and .cse11 (<= 11 ~a28~0) .cse4 .cse12 .cse6)))) [2021-10-24 10:17:19,753 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-24 10:17:19,753 INFO L857 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-24 10:17:19,753 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-24 10:17:19,753 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-24 10:17:19,753 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-24 10:17:19,753 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-24 10:17:19,753 INFO L857 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-24 10:17:19,753 INFO L857 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-24 10:17:19,754 INFO L857 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-24 10:17:19,754 INFO L857 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-24 10:17:19,754 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-24 10:17:19,754 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-24 10:17:19,754 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-24 10:17:19,754 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-24 10:17:19,754 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-24 10:17:19,754 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-24 10:17:19,767 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:17:19,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:17:19 BoogieIcfgContainer [2021-10-24 10:17:19,804 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:17:19,804 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:17:19,804 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:17:19,805 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:17:19,805 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:17:06" (3/4) ... [2021-10-24 10:17:19,808 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:17:19,832 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2021-10-24 10:17:19,834 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-10-24 10:17:19,836 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-24 10:17:19,838 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-24 10:17:19,986 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:17:19,987 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:17:19,989 INFO L168 Benchmark]: Toolchain (without parser) took 16640.98 ms. Allocated memory was 90.2 MB in the beginning and 220.2 MB in the end (delta: 130.0 MB). Free memory was 58.4 MB in the beginning and 88.3 MB in the end (delta: -29.9 MB). Peak memory consumption was 101.3 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:19,989 INFO L168 Benchmark]: CDTParser took 1.08 ms. Allocated memory is still 90.2 MB. Free memory is still 58.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:17:19,990 INFO L168 Benchmark]: CACSL2BoogieTranslator took 565.20 ms. Allocated memory is still 90.2 MB. Free memory was 58.1 MB in the beginning and 32.5 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:19,991 INFO L168 Benchmark]: Boogie Procedure Inliner took 126.05 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 32.5 MB in the beginning and 82.0 MB in the end (delta: -49.5 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:19,991 INFO L168 Benchmark]: Boogie Preprocessor took 97.46 ms. Allocated memory is still 109.1 MB. Free memory was 82.0 MB in the beginning and 77.7 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:19,991 INFO L168 Benchmark]: RCFGBuilder took 2153.21 ms. Allocated memory is still 109.1 MB. Free memory was 77.7 MB in the beginning and 40.3 MB in the end (delta: 37.4 MB). Peak memory consumption was 41.7 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:19,992 INFO L168 Benchmark]: TraceAbstraction took 13506.23 ms. Allocated memory was 109.1 MB in the beginning and 220.2 MB in the end (delta: 111.1 MB). Free memory was 40.3 MB in the beginning and 103.0 MB in the end (delta: -62.6 MB). Peak memory consumption was 47.7 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:19,992 INFO L168 Benchmark]: Witness Printer took 182.61 ms. Allocated memory is still 220.2 MB. Free memory was 103.0 MB in the beginning and 88.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:19,995 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.08 ms. Allocated memory is still 90.2 MB. Free memory is still 58.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 565.20 ms. Allocated memory is still 90.2 MB. Free memory was 58.1 MB in the beginning and 32.5 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 126.05 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 32.5 MB in the beginning and 82.0 MB in the end (delta: -49.5 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 97.46 ms. Allocated memory is still 109.1 MB. Free memory was 82.0 MB in the beginning and 77.7 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2153.21 ms. Allocated memory is still 109.1 MB. Free memory was 77.7 MB in the beginning and 40.3 MB in the end (delta: 37.4 MB). Peak memory consumption was 41.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13506.23 ms. Allocated memory was 109.1 MB in the beginning and 220.2 MB in the end (delta: 111.1 MB). Free memory was 40.3 MB in the beginning and 103.0 MB in the end (delta: -62.6 MB). Peak memory consumption was 47.7 MB. Max. memory is 16.1 GB. * Witness Printer took 182.61 ms. Allocated memory is still 220.2 MB. Free memory was 103.0 MB in the beginning and 88.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 452]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13384.8ms, OverallIterations: 13, TraceHistogramMax: 5, EmptinessCheckTime: 83.1ms, AutomataDifference: 5309.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 492.0ms, InitialAbstractionConstructionTime: 16.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1126 SDtfs, 875 SDslu, 88 SDs, 0 SdLazy, 3621 SolverSat, 830 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3626.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1181 GetRequests, 1151 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 155.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2243occurred in iteration=10, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 554.2ms AutomataMinimizationTime, 13 MinimizatonAttempts, 480 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 71 NumberOfFragments, 323 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1020 FormulaSimplificationTreeSizeReduction, 62.0ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 270 FormulaSimplificationTreeSizeReductionInter, 420.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 187.6ms SsaConstructionTime, 523.8ms SatisfiabilityAnalysisTime, 4378.3ms InterpolantComputationTime, 2205 NumberOfCodeBlocks, 2205 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 2758 ConstructedInterpolants, 0 QuantifiedInterpolants, 7791 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1275 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 21 InterpolantComputations, 17 PerfectInterpolantSequences, 1820/1852 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((((((((((a17 <= 7 && a28 <= 10) && !(a25 == 1)) && a19 <= 0) || ((a25 == 1 && a11 == 0) && a19 == 1)) || ((a28 < 10 && a17 <= 7) && 8 < a28)) || (a28 < 10 && a19 <= 0)) || ((a28 < 10 && a17 <= 7) && a19 == 1)) || ((a11 == 0 && a19 == 1) && a28 <= 7)) || (((a11 == 0 && a28 <= 10) && a19 == 1) && 8 < a28)) || (((10 <= a28 && a28 <= 10) && !(a25 == 1)) && a19 == 1)) || ((((a17 == 8 && a21 == 1) && a28 <= 10) && a19 == 1) && 8 < a28)) || ((a17 <= 7 && !(a25 == 1)) && a19 == 1)) || (((10 <= a28 && a25 == 1) && a11 == 0) && a28 <= 10)) || ((((a17 == 8 && a25 == 1) && a21 == 1) && a19 == 1) && a28 <= 7)) || ((((a17 == 8 && 11 <= a28) && a25 == 1) && a21 == 1) && a19 == 1) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((((((((a17 <= 7 && a28 <= 10) && !(a25 == 1)) && a19 <= 0) || ((a25 == 1 && a11 == 0) && a19 == 1)) || ((a28 < 10 && a17 <= 7) && 8 < a28)) || (a28 < 10 && a19 <= 0)) || ((a28 < 10 && a17 <= 7) && a19 == 1)) || ((a11 == 0 && a19 == 1) && a28 <= 7)) || (((a11 == 0 && a28 <= 10) && a19 == 1) && 8 < a28)) || (((10 <= a28 && a28 <= 10) && !(a25 == 1)) && a19 == 1)) || ((((a17 == 8 && a21 == 1) && a28 <= 10) && a19 == 1) && 8 < a28)) || ((a17 <= 7 && !(a25 == 1)) && a19 == 1)) || (((10 <= a28 && a25 == 1) && a11 == 0) && a28 <= 10)) || ((((a17 == 8 && a25 == 1) && a21 == 1) && a19 == 1) && a28 <= 7)) || ((((a17 == 8 && 11 <= a28) && a25 == 1) && a21 == 1) && a19 == 1) RESULT: Ultimate proved your program to be correct! [2021-10-24 10:17:20,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab9735f-103d-46e3-becb-9f46c23c1f0a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...