./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4befb95-beca-40f8-9067-b7ce8e13f4fe/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4befb95-beca-40f8-9067-b7ce8e13f4fe/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4befb95-beca-40f8-9067-b7ce8e13f4fe/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4befb95-beca-40f8-9067-b7ce8e13f4fe/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4befb95-beca-40f8-9067-b7ce8e13f4fe/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4befb95-beca-40f8-9067-b7ce8e13f4fe/bin/utaipan-WLngWcDbfI --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 ca35bd50d888047fd624bd95d9bb19453630de07 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:20:51,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:20:51,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:20:52,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:20:52,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:20:52,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:20:52,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:20:52,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:20:52,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:20:52,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:20:52,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:20:52,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:20:52,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:20:52,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:20:52,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:20:52,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:20:52,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:20:52,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:20:52,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:20:52,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:20:52,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:20:52,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:20:52,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:20:52,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:20:52,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:20:52,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:20:52,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:20:52,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:20:52,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:20:52,093 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:20:52,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:20:52,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:20:52,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:20:52,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:20:52,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:20:52,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:20:52,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:20:52,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:20:52,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:20:52,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:20:52,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:20:52,105 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4befb95-beca-40f8-9067-b7ce8e13f4fe/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:20:52,144 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:20:52,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:20:52,146 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:20:52,146 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:20:52,147 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:20:52,147 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:20:52,147 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:20:52,147 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:20:52,154 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:20:52,154 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:20:52,155 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:20:52,156 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:20:52,156 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:20:52,156 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:20:52,156 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:20:52,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:20:52,157 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:20:52,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:20:52,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:20:52,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:20:52,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:20:52,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:20:52,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:20:52,159 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:20:52,159 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:20:52,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:20:52,160 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:20:52,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:20:52,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:20:52,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:20:52,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:20:52,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:20:52,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:20:52,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:20:52,163 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:20:52,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:20:52,164 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:20:52,164 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:20:52,164 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:20:52,165 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_d4befb95-beca-40f8-9067-b7ce8e13f4fe/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4befb95-beca-40f8-9067-b7ce8e13f4fe/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca35bd50d888047fd624bd95d9bb19453630de07 [2021-10-11 02:20:52,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:20:52,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:20:52,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:20:52,539 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:20:52,540 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:20:52,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4befb95-beca-40f8-9067-b7ce8e13f4fe/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c [2021-10-11 02:20:52,613 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4befb95-beca-40f8-9067-b7ce8e13f4fe/bin/utaipan-WLngWcDbfI/data/79c5fd2d8/a1e7efa6e88c44998fd1cd1b196052cb/FLAGb5dc41351 [2021-10-11 02:20:53,169 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:20:53,169 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4befb95-beca-40f8-9067-b7ce8e13f4fe/sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c [2021-10-11 02:20:53,181 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4befb95-beca-40f8-9067-b7ce8e13f4fe/bin/utaipan-WLngWcDbfI/data/79c5fd2d8/a1e7efa6e88c44998fd1cd1b196052cb/FLAGb5dc41351 [2021-10-11 02:20:53,522 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4befb95-beca-40f8-9067-b7ce8e13f4fe/bin/utaipan-WLngWcDbfI/data/79c5fd2d8/a1e7efa6e88c44998fd1cd1b196052cb [2021-10-11 02:20:53,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:20:53,526 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:20:53,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:53,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:20:53,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:20:53,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:53" (1/1) ... [2021-10-11 02:20:53,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23997810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:53, skipping insertion in model container [2021-10-11 02:20:53,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:53" (1/1) ... [2021-10-11 02:20:53,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:20:53,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:20:53,798 WARN L226 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_d4befb95-beca-40f8-9067-b7ce8e13f4fe/sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c[13706,13719] [2021-10-11 02:20:53,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:53,812 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:20:53,838 WARN L226 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_d4befb95-beca-40f8-9067-b7ce8e13f4fe/sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c[13706,13719] [2021-10-11 02:20:53,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:53,855 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:20:53,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:53 WrapperNode [2021-10-11 02:20:53,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:53,857 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:53,857 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:20:53,857 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:20:53,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:53" (1/1) ... [2021-10-11 02:20:53,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:53" (1/1) ... [2021-10-11 02:20:53,913 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:53,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:20:53,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:20:53,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:20:53,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:53" (1/1) ... [2021-10-11 02:20:53,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:53" (1/1) ... [2021-10-11 02:20:53,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:53" (1/1) ... [2021-10-11 02:20:53,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:53" (1/1) ... [2021-10-11 02:20:53,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:53" (1/1) ... [2021-10-11 02:20:53,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:53" (1/1) ... [2021-10-11 02:20:53,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:53" (1/1) ... [2021-10-11 02:20:53,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:20:53,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:20:53,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:20:53,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:20:53,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:53" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4befb95-beca-40f8-9067-b7ce8e13f4fe/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:20:54,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:20:54,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:20:54,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:20:54,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:20:54,562 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:20:54,563 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 02:20:54,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:54 BoogieIcfgContainer [2021-10-11 02:20:54,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:20:54,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:20:54,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:20:54,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:20:54,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:20:53" (1/3) ... [2021-10-11 02:20:54,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ca948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:54, skipping insertion in model container [2021-10-11 02:20:54,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:53" (2/3) ... [2021-10-11 02:20:54,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ca948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:54, skipping insertion in model container [2021-10-11 02:20:54,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:54" (3/3) ... [2021-10-11 02:20:54,573 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a.cil.c [2021-10-11 02:20:54,588 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:20:54,591 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:20:54,603 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:20:54,629 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:20:54,629 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:20:54,630 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:20:54,630 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:20:54,630 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:20:54,630 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:20:54,631 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:20:54,631 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:20:54,646 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2021-10-11 02:20:54,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:20:54,652 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:54,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:20:54,653 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:54,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:54,673 INFO L82 PathProgramCache]: Analyzing trace with hash 6833336, now seen corresponding path program 1 times [2021-10-11 02:20:54,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:54,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17568379] [2021-10-11 02:20:54,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:54,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:54,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17568379] [2021-10-11 02:20:54,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:54,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:54,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427708786] [2021-10-11 02:20:54,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:54,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:54,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:54,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:54,995 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2021-10-11 02:20:55,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:55,113 INFO L93 Difference]: Finished difference Result 86 states and 152 transitions. [2021-10-11 02:20:55,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:55,115 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-10-11 02:20:55,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:55,138 INFO L225 Difference]: With dead ends: 86 [2021-10-11 02:20:55,139 INFO L226 Difference]: Without dead ends: 51 [2021-10-11 02:20:55,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:55,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-11 02:20:55,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-11 02:20:55,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-10-11 02:20:55,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 85 transitions. [2021-10-11 02:20:55,215 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 85 transitions. Word has length 4 [2021-10-11 02:20:55,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:55,216 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 85 transitions. [2021-10-11 02:20:55,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:55,216 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 85 transitions. [2021-10-11 02:20:55,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:20:55,217 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:55,217 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-11 02:20:55,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:20:55,217 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:55,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:55,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1710754968, now seen corresponding path program 1 times [2021-10-11 02:20:55,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:55,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861474291] [2021-10-11 02:20:55,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:55,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:55,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861474291] [2021-10-11 02:20:55,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451193759] [2021-10-11 02:20:55,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4befb95-beca-40f8-9067-b7ce8e13f4fe/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:55,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:20:55,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:20:55,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:55,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:20:55,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:20:55,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:20:55,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3, 3] total 4 [2021-10-11 02:20:55,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827836989] [2021-10-11 02:20:55,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:55,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:55,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:55,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:20:55,421 INFO L87 Difference]: Start difference. First operand 51 states and 85 transitions. Second operand 3 states. [2021-10-11 02:20:55,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:55,492 INFO L93 Difference]: Finished difference Result 125 states and 212 transitions. [2021-10-11 02:20:55,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:55,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-10-11 02:20:55,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:55,498 INFO L225 Difference]: With dead ends: 125 [2021-10-11 02:20:55,498 INFO L226 Difference]: Without dead ends: 99 [2021-10-11 02:20:55,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:20:55,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-11 02:20:55,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-10-11 02:20:55,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2021-10-11 02:20:55,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 165 transitions. [2021-10-11 02:20:55,530 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 165 transitions. Word has length 7 [2021-10-11 02:20:55,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:55,530 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 165 transitions. [2021-10-11 02:20:55,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:55,531 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 165 transitions. [2021-10-11 02:20:55,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-11 02:20:55,532 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:55,532 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:55,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 02:20:55,757 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:55,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:55,758 INFO L82 PathProgramCache]: Analyzing trace with hash -144502045, now seen corresponding path program 1 times [2021-10-11 02:20:55,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:55,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374361048] [2021-10-11 02:20:55,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:55,796 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:20:55,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374361048] [2021-10-11 02:20:55,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:55,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:55,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398876763] [2021-10-11 02:20:55,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:55,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:55,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:55,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:55,799 INFO L87 Difference]: Start difference. First operand 99 states and 165 transitions. Second operand 3 states. [2021-10-11 02:20:55,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:55,858 INFO L93 Difference]: Finished difference Result 152 states and 253 transitions. [2021-10-11 02:20:55,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:55,858 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2021-10-11 02:20:55,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:55,860 INFO L225 Difference]: With dead ends: 152 [2021-10-11 02:20:55,860 INFO L226 Difference]: Without dead ends: 54 [2021-10-11 02:20:55,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:55,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-11 02:20:55,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-10-11 02:20:55,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-10-11 02:20:55,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 88 transitions. [2021-10-11 02:20:55,870 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 88 transitions. Word has length 20 [2021-10-11 02:20:55,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:55,870 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 88 transitions. [2021-10-11 02:20:55,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:55,870 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 88 transitions. [2021-10-11 02:20:55,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-11 02:20:55,871 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:55,871 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:55,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:20:55,872 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:55,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:55,873 INFO L82 PathProgramCache]: Analyzing trace with hash -283582867, now seen corresponding path program 2 times [2021-10-11 02:20:55,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:55,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112885618] [2021-10-11 02:20:55,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:55,910 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:55,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112885618] [2021-10-11 02:20:55,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:55,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:55,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972744764] [2021-10-11 02:20:55,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:55,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:55,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:55,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:55,913 INFO L87 Difference]: Start difference. First operand 54 states and 88 transitions. Second operand 3 states. [2021-10-11 02:20:55,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:55,997 INFO L93 Difference]: Finished difference Result 114 states and 186 transitions. [2021-10-11 02:20:55,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:55,998 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2021-10-11 02:20:55,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:55,999 INFO L225 Difference]: With dead ends: 114 [2021-10-11 02:20:55,999 INFO L226 Difference]: Without dead ends: 64 [2021-10-11 02:20:56,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:56,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-11 02:20:56,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2021-10-11 02:20:56,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-10-11 02:20:56,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 97 transitions. [2021-10-11 02:20:56,011 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 97 transitions. Word has length 20 [2021-10-11 02:20:56,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:56,012 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 97 transitions. [2021-10-11 02:20:56,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:56,012 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 97 transitions. [2021-10-11 02:20:56,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-11 02:20:56,013 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:56,014 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:56,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:20:56,014 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:56,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:56,015 INFO L82 PathProgramCache]: Analyzing trace with hash -425139850, now seen corresponding path program 1 times [2021-10-11 02:20:56,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:56,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451088799] [2021-10-11 02:20:56,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:56,059 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-11 02:20:56,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451088799] [2021-10-11 02:20:56,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:56,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:56,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252169125] [2021-10-11 02:20:56,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:56,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:56,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:56,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:56,063 INFO L87 Difference]: Start difference. First operand 62 states and 97 transitions. Second operand 3 states. [2021-10-11 02:20:56,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:56,213 INFO L93 Difference]: Finished difference Result 108 states and 173 transitions. [2021-10-11 02:20:56,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:56,214 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2021-10-11 02:20:56,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:56,216 INFO L225 Difference]: With dead ends: 108 [2021-10-11 02:20:56,216 INFO L226 Difference]: Without dead ends: 78 [2021-10-11 02:20:56,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:56,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-11 02:20:56,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2021-10-11 02:20:56,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-10-11 02:20:56,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 110 transitions. [2021-10-11 02:20:56,241 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 110 transitions. Word has length 24 [2021-10-11 02:20:56,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:56,242 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 110 transitions. [2021-10-11 02:20:56,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:56,243 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 110 transitions. [2021-10-11 02:20:56,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-11 02:20:56,245 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:56,245 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:56,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:20:56,246 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:56,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:56,247 INFO L82 PathProgramCache]: Analyzing trace with hash 425788437, now seen corresponding path program 1 times [2021-10-11 02:20:56,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:56,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397598746] [2021-10-11 02:20:56,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:56,370 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:56,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397598746] [2021-10-11 02:20:56,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678598662] [2021-10-11 02:20:56,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4befb95-beca-40f8-9067-b7ce8e13f4fe/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:56,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:20:56,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:20:56,514 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:56,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:20:56,610 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-11 02:20:56,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:20:56,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 7 [2021-10-11 02:20:56,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469732230] [2021-10-11 02:20:56,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:56,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:56,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:56,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:20:56,623 INFO L87 Difference]: Start difference. First operand 75 states and 110 transitions. Second operand 3 states. [2021-10-11 02:20:56,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:56,670 INFO L93 Difference]: Finished difference Result 120 states and 173 transitions. [2021-10-11 02:20:56,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:56,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-10-11 02:20:56,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:56,674 INFO L225 Difference]: With dead ends: 120 [2021-10-11 02:20:56,674 INFO L226 Difference]: Without dead ends: 118 [2021-10-11 02:20:56,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:20:56,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-11 02:20:56,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2021-10-11 02:20:56,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2021-10-11 02:20:56,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 170 transitions. [2021-10-11 02:20:56,708 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 170 transitions. Word has length 38 [2021-10-11 02:20:56,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:56,709 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 170 transitions. [2021-10-11 02:20:56,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:56,709 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 170 transitions. [2021-10-11 02:20:56,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-11 02:20:56,714 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:56,714 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:56,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:56,915 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:56,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:56,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1158953226, now seen corresponding path program 1 times [2021-10-11 02:20:56,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:56,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988055307] [2021-10-11 02:20:56,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:56,986 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:56,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988055307] [2021-10-11 02:20:56,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151314103] [2021-10-11 02:20:56,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4befb95-beca-40f8-9067-b7ce8e13f4fe/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:57,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:20:57,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:20:57,105 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-11 02:20:57,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:20:57,156 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-11 02:20:57,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:20:57,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 8 [2021-10-11 02:20:57,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595134641] [2021-10-11 02:20:57,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:20:57,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:57,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:20:57,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:20:57,162 INFO L87 Difference]: Start difference. First operand 116 states and 170 transitions. Second operand 4 states. [2021-10-11 02:20:57,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:57,288 INFO L93 Difference]: Finished difference Result 236 states and 354 transitions. [2021-10-11 02:20:57,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:20:57,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2021-10-11 02:20:57,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:57,290 INFO L225 Difference]: With dead ends: 236 [2021-10-11 02:20:57,291 INFO L226 Difference]: Without dead ends: 124 [2021-10-11 02:20:57,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:20:57,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-11 02:20:57,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 112. [2021-10-11 02:20:57,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2021-10-11 02:20:57,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 134 transitions. [2021-10-11 02:20:57,319 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 134 transitions. Word has length 40 [2021-10-11 02:20:57,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:57,321 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 134 transitions. [2021-10-11 02:20:57,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:20:57,323 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 134 transitions. [2021-10-11 02:20:57,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-11 02:20:57,328 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:57,328 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:57,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:57,541 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:57,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:57,542 INFO L82 PathProgramCache]: Analyzing trace with hash -461272919, now seen corresponding path program 1 times [2021-10-11 02:20:57,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:57,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018178917] [2021-10-11 02:20:57,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:57,652 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 35 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:57,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018178917] [2021-10-11 02:20:57,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374750233] [2021-10-11 02:20:57,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4befb95-beca-40f8-9067-b7ce8e13f4fe/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:57,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:20:57,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:20:57,782 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-11 02:20:57,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:20:57,843 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-11 02:20:57,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:20:57,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 8 [2021-10-11 02:20:57,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753928974] [2021-10-11 02:20:57,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:20:57,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:57,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:20:57,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:20:57,846 INFO L87 Difference]: Start difference. First operand 112 states and 134 transitions. Second operand 4 states. [2021-10-11 02:20:57,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:57,991 INFO L93 Difference]: Finished difference Result 246 states and 291 transitions. [2021-10-11 02:20:57,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:20:57,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2021-10-11 02:20:57,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:57,993 INFO L225 Difference]: With dead ends: 246 [2021-10-11 02:20:57,994 INFO L226 Difference]: Without dead ends: 155 [2021-10-11 02:20:57,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:20:57,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-10-11 02:20:58,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 129. [2021-10-11 02:20:58,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2021-10-11 02:20:58,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 156 transitions. [2021-10-11 02:20:58,014 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 156 transitions. Word has length 54 [2021-10-11 02:20:58,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:58,015 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 156 transitions. [2021-10-11 02:20:58,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:20:58,015 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 156 transitions. [2021-10-11 02:20:58,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-11 02:20:58,026 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:58,026 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:58,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:58,248 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:58,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:58,248 INFO L82 PathProgramCache]: Analyzing trace with hash -518338559, now seen corresponding path program 1 times [2021-10-11 02:20:58,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:58,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695122057] [2021-10-11 02:20:58,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:58,313 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 99 proven. 30 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-10-11 02:20:58,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695122057] [2021-10-11 02:20:58,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14976472] [2021-10-11 02:20:58,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4befb95-beca-40f8-9067-b7ce8e13f4fe/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:58,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:20:58,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:20:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-10-11 02:20:58,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:20:58,569 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-10-11 02:20:58,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:20:58,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-11 02:20:58,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665809129] [2021-10-11 02:20:58,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:58,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:58,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:58,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:20:58,573 INFO L87 Difference]: Start difference. First operand 129 states and 156 transitions. Second operand 3 states. [2021-10-11 02:20:58,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:58,598 INFO L93 Difference]: Finished difference Result 199 states and 228 transitions. [2021-10-11 02:20:58,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:58,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2021-10-11 02:20:58,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:58,602 INFO L225 Difference]: With dead ends: 199 [2021-10-11 02:20:58,602 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:20:58,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:20:58,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:20:58,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:20:58,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:20:58,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:20:58,603 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 80 [2021-10-11 02:20:58,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:58,604 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:20:58,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:58,604 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:20:58,604 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:20:58,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:58,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:20:59,458 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:20:59,458 INFO L265 CegarLoopResult]: At program point L218(lines 10 219) the Hoare annotation is: true [2021-10-11 02:20:59,458 INFO L258 CegarLoopResult]: At program point L70(lines 70 187) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (<= ULTIMATE.start_main_~s__state~0 8640)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2021-10-11 02:20:59,459 INFO L258 CegarLoopResult]: At program point L62(lines 62 191) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (<= ULTIMATE.start_main_~blastFlag~0 2) (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2021-10-11 02:20:59,459 INFO L262 CegarLoopResult]: For program point L153-1(lines 76 185) no Hoare annotation was computed. [2021-10-11 02:20:59,459 INFO L258 CegarLoopResult]: At program point L54(lines 54 195) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (<= ULTIMATE.start_main_~blastFlag~0 2) (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2021-10-11 02:20:59,459 INFO L258 CegarLoopResult]: At program point L178(lines 24 213) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (<= ULTIMATE.start_main_~blastFlag~0 2) (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2021-10-11 02:20:59,459 INFO L262 CegarLoopResult]: For program point L46(lines 46 199) no Hoare annotation was computed. [2021-10-11 02:20:59,459 INFO L258 CegarLoopResult]: At program point L38(lines 38 203) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (<= ULTIMATE.start_main_~blastFlag~0 2) (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2021-10-11 02:20:59,459 INFO L258 CegarLoopResult]: At program point L47(lines 46 199) the Hoare annotation is: (and (<= ULTIMATE.start_main_~blastFlag~0 2) (< 8512 ULTIMATE.start_main_~s__state~0) (<= ULTIMATE.start_main_~s__state~0 8640)) [2021-10-11 02:20:59,460 INFO L262 CegarLoopResult]: For program point L171-1(lines 76 185) no Hoare annotation was computed. [2021-10-11 02:20:59,460 INFO L258 CegarLoopResult]: At program point L31(lines 31 206) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (<= ULTIMATE.start_main_~blastFlag~0 2) (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2021-10-11 02:20:59,460 INFO L258 CegarLoopResult]: At program point L122(lines 115 124) the Hoare annotation is: (and (<= ULTIMATE.start_main_~blastFlag~0 2) (< 8512 ULTIMATE.start_main_~s__state~0) (<= ULTIMATE.start_main_~s__state~0 8640)) [2021-10-11 02:20:59,460 INFO L258 CegarLoopResult]: At program point L114(lines 107 125) the Hoare annotation is: (and (<= ULTIMATE.start_main_~blastFlag~0 2) (< 8512 ULTIMATE.start_main_~s__state~0) (<= ULTIMATE.start_main_~s__state~0 8640)) [2021-10-11 02:20:59,460 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 217) no Hoare annotation was computed. [2021-10-11 02:20:59,460 INFO L262 CegarLoopResult]: For program point L107(lines 107 125) no Hoare annotation was computed. [2021-10-11 02:20:59,460 INFO L262 CegarLoopResult]: For program point L74(lines 74 185) no Hoare annotation was computed. [2021-10-11 02:20:59,461 INFO L258 CegarLoopResult]: At program point L66(lines 66 189) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (<= ULTIMATE.start_main_~blastFlag~0 2) (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2021-10-11 02:20:59,461 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:20:59,461 INFO L258 CegarLoopResult]: At program point L58(lines 58 193) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (<= ULTIMATE.start_main_~blastFlag~0 2) (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2021-10-11 02:20:59,461 INFO L262 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2021-10-11 02:20:59,461 INFO L265 CegarLoopResult]: At program point L215(lines 10 219) the Hoare annotation is: true [2021-10-11 02:20:59,461 INFO L262 CegarLoopResult]: For program point L116(lines 116 120) no Hoare annotation was computed. [2021-10-11 02:20:59,461 INFO L258 CegarLoopResult]: At program point L50(lines 50 197) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (<= ULTIMATE.start_main_~blastFlag~0 2) (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2021-10-11 02:20:59,461 INFO L262 CegarLoopResult]: For program point L174(lines 174 176) no Hoare annotation was computed. [2021-10-11 02:20:59,461 INFO L262 CegarLoopResult]: For program point L108(lines 108 112) no Hoare annotation was computed. [2021-10-11 02:20:59,462 INFO L258 CegarLoopResult]: At program point L75(lines 74 185) the Hoare annotation is: (and (< ULTIMATE.start_main_~blastFlag~0 5) (<= 8672 ULTIMATE.start_main_~s__state~0)) [2021-10-11 02:20:59,462 INFO L258 CegarLoopResult]: At program point L42(lines 42 201) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (<= ULTIMATE.start_main_~blastFlag~0 2) (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2021-10-11 02:20:59,462 INFO L258 CegarLoopResult]: At program point L34(lines 34 205) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (<= ULTIMATE.start_main_~blastFlag~0 2) (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2021-10-11 02:20:59,462 INFO L258 CegarLoopResult]: At program point L175(lines 10 219) the Hoare annotation is: false [2021-10-11 02:20:59,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:20:59 BoogieIcfgContainer [2021-10-11 02:20:59,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:20:59,484 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:20:59,485 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:20:59,485 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:20:59,485 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:54" (3/4) ... [2021-10-11 02:20:59,488 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:20:59,499 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-11 02:20:59,500 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:20:59,500 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:20:59,500 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:20:59,551 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4befb95-beca-40f8-9067-b7ce8e13f4fe/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:20:59,551 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:20:59,552 INFO L168 Benchmark]: Toolchain (without parser) took 6024.98 ms. Allocated memory was 81.8 MB in the beginning and 157.3 MB in the end (delta: 75.5 MB). Free memory was 44.7 MB in the beginning and 84.3 MB in the end (delta: -39.6 MB). Peak memory consumption was 36.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:59,553 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 81.8 MB. Free memory was 61.4 MB in the beginning and 61.4 MB in the end (delta: 37.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:20:59,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.22 ms. Allocated memory was 81.8 MB in the beginning and 104.9 MB in the end (delta: 23.1 MB). Free memory was 44.5 MB in the beginning and 80.0 MB in the end (delta: -35.6 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:59,554 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.53 ms. Allocated memory is still 104.9 MB. Free memory was 80.0 MB in the beginning and 78.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:20:59,554 INFO L168 Benchmark]: Boogie Preprocessor took 30.00 ms. Allocated memory is still 104.9 MB. Free memory was 78.4 MB in the beginning and 77.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:20:59,554 INFO L168 Benchmark]: RCFGBuilder took 620.11 ms. Allocated memory is still 104.9 MB. Free memory was 77.1 MB in the beginning and 75.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:59,555 INFO L168 Benchmark]: TraceAbstraction took 4917.39 ms. Allocated memory was 104.9 MB in the beginning and 157.3 MB in the end (delta: 52.4 MB). Free memory was 75.5 MB in the beginning and 87.4 MB in the end (delta: -12.0 MB). Peak memory consumption was 87.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:59,555 INFO L168 Benchmark]: Witness Printer took 66.39 ms. Allocated memory is still 157.3 MB. Free memory was 87.4 MB in the beginning and 84.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:59,558 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 81.8 MB. Free memory was 61.4 MB in the beginning and 61.4 MB in the end (delta: 37.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 319.22 ms. Allocated memory was 81.8 MB in the beginning and 104.9 MB in the end (delta: 23.1 MB). Free memory was 44.5 MB in the beginning and 80.0 MB in the end (delta: -35.6 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.53 ms. Allocated memory is still 104.9 MB. Free memory was 80.0 MB in the beginning and 78.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.00 ms. Allocated memory is still 104.9 MB. Free memory was 78.4 MB in the beginning and 77.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 620.11 ms. Allocated memory is still 104.9 MB. Free memory was 77.1 MB in the beginning and 75.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4917.39 ms. Allocated memory was 104.9 MB in the beginning and 157.3 MB in the end (delta: 52.4 MB). Free memory was 75.5 MB in the beginning and 87.4 MB in the end (delta: -12.0 MB). Peak memory consumption was 87.7 MB. Max. memory is 16.1 GB. * Witness Printer took 66.39 ms. Allocated memory is still 157.3 MB. Free memory was 87.4 MB in the beginning and 84.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 217]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (blastFlag <= 2 && 8512 < s__state) && s__state <= 8640 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: (blastFlag <= 2 || ((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640)) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 115]: Loop Invariant Derived loop invariant: (blastFlag <= 2 && 8512 < s__state) && s__state <= 8640 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (blastFlag <= 2 || ((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640)) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: ((8640 <= s__state && s__state <= 8640) || blastFlag <= 2) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: (blastFlag <= 2 || ((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640)) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 107]: Loop Invariant Derived loop invariant: (blastFlag <= 2 && 8512 < s__state) && s__state <= 8640 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (blastFlag <= 2 || ((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640)) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: (blastFlag <= 2 || ((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640)) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: (blastFlag <= 2 || ((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640)) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (blastFlag <= 2 || ((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640)) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 74]: Loop Invariant Derived loop invariant: blastFlag < 5 && 8672 <= s__state - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: (blastFlag <= 2 || ((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640)) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (blastFlag <= 2 || ((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640)) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 66]: Loop Invariant Derived loop invariant: (blastFlag <= 2 || ((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640)) || (blastFlag < 5 && 8640 <= s__state) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 9, TraceHistogramMax: 7, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 374 SDtfs, 164 SDslu, 201 SDs, 0 SdLazy, 316 SolverSat, 70 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 461 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 45 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 18 PreInvPairs, 108 NumberOfFragments, 278 HoareAnnotationTreeSize, 18 FomulaSimplifications, 870 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 18 FomulaSimplificationsInter, 456 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 506 NumberOfCodeBlocks, 506 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 706 ConstructedInterpolants, 0 QuantifiedInterpolants, 67142 SizeOfPredicates, 0 NumberOfNonLiveVariables, 512 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 19 InterpolantComputations, 12 PerfectInterpolantSequences, 779/933 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...