./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4d287-c19a-426b-b682-e3c6eb295158/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4d287-c19a-426b-b682-e3c6eb295158/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4d287-c19a-426b-b682-e3c6eb295158/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4d287-c19a-426b-b682-e3c6eb295158/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4d287-c19a-426b-b682-e3c6eb295158/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4d287-c19a-426b-b682-e3c6eb295158/bin/uautomizer-UnR33cPsHg --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 153b6d90c91de27e09ed3c918b0b1be779b258e790f6fc392e7d5f390719c2db ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:24:31,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:24:31,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:24:31,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:24:31,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:24:31,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:24:31,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:24:31,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:24:31,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:24:31,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:24:31,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:24:31,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:24:31,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:24:31,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:24:31,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:24:31,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:24:31,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:24:31,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:24:31,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:24:31,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:24:31,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:24:31,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:24:31,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:24:31,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:24:31,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:24:31,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:24:31,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:24:31,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:24:31,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:24:31,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:24:31,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:24:31,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:24:31,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:24:31,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:24:31,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:24:31,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:24:31,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:24:31,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:24:31,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:24:31,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:24:31,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:24:31,920 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4d287-c19a-426b-b682-e3c6eb295158/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:24:31,967 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:24:31,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:24:31,969 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:24:31,969 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:24:31,971 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:24:31,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:24:31,971 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:24:31,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:24:31,972 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:24:31,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:24:31,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:24:31,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:24:31,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:24:31,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:24:31,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:24:31,975 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:24:31,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:24:31,975 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:24:31,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:24:31,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:24:31,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:24:31,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:24:31,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:24:31,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:24:31,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:24:31,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:24:31,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:24:31,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:24:31,978 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:24:31,981 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:24:31,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:24:31,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:24:31,982 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_73c4d287-c19a-426b-b682-e3c6eb295158/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4d287-c19a-426b-b682-e3c6eb295158/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 153b6d90c91de27e09ed3c918b0b1be779b258e790f6fc392e7d5f390719c2db [2021-10-28 09:24:32,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:24:32,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:24:32,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:24:32,261 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:24:32,262 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:24:32,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4d287-c19a-426b-b682-e3c6eb295158/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2021-10-28 09:24:32,339 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4d287-c19a-426b-b682-e3c6eb295158/bin/uautomizer-UnR33cPsHg/data/afdd23bdc/9523c7e9461d42aeae4ab38bf503993c/FLAG3fc825a11 [2021-10-28 09:24:32,831 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:24:32,831 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4d287-c19a-426b-b682-e3c6eb295158/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2021-10-28 09:24:32,838 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4d287-c19a-426b-b682-e3c6eb295158/bin/uautomizer-UnR33cPsHg/data/afdd23bdc/9523c7e9461d42aeae4ab38bf503993c/FLAG3fc825a11 [2021-10-28 09:24:33,190 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4d287-c19a-426b-b682-e3c6eb295158/bin/uautomizer-UnR33cPsHg/data/afdd23bdc/9523c7e9461d42aeae4ab38bf503993c [2021-10-28 09:24:33,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:24:33,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:24:33,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:24:33,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:24:33,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:24:33,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:24:33" (1/1) ... [2021-10-28 09:24:33,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13f2942f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:24:33, skipping insertion in model container [2021-10-28 09:24:33,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:24:33" (1/1) ... [2021-10-28 09:24:33,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:24:33,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:24:33,402 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_73c4d287-c19a-426b-b682-e3c6eb295158/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c[8244,8257] [2021-10-28 09:24:33,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:24:33,414 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:24:33,429 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_73c4d287-c19a-426b-b682-e3c6eb295158/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c[8244,8257] [2021-10-28 09:24:33,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:24:33,442 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:24:33,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:24:33 WrapperNode [2021-10-28 09:24:33,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:24:33,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:24:33,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:24:33,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:24:33,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:24:33" (1/1) ... [2021-10-28 09:24:33,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:24:33" (1/1) ... [2021-10-28 09:24:33,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:24:33,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:24:33,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:24:33,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:24:33,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:24:33" (1/1) ... [2021-10-28 09:24:33,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:24:33" (1/1) ... [2021-10-28 09:24:33,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:24:33" (1/1) ... [2021-10-28 09:24:33,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:24:33" (1/1) ... [2021-10-28 09:24:33,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:24:33" (1/1) ... [2021-10-28 09:24:33,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:24:33" (1/1) ... [2021-10-28 09:24:33,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:24:33" (1/1) ... [2021-10-28 09:24:33,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:24:33,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:24:33,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:24:33,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:24:33,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:24:33" (1/1) ... [2021-10-28 09:24:33,512 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:24:33,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4d287-c19a-426b-b682-e3c6eb295158/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:24:33,535 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4d287-c19a-426b-b682-e3c6eb295158/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:24:33,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4d287-c19a-426b-b682-e3c6eb295158/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:24:33,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:24:33,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:24:33,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:24:33,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:24:33,796 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:24:33,796 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 09:24:33,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:24:33 BoogieIcfgContainer [2021-10-28 09:24:33,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:24:33,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:24:33,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:24:33,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:24:33,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:24:33" (1/3) ... [2021-10-28 09:24:33,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479ff1dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:24:33, skipping insertion in model container [2021-10-28 09:24:33,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:24:33" (2/3) ... [2021-10-28 09:24:33,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479ff1dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:24:33, skipping insertion in model container [2021-10-28 09:24:33,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:24:33" (3/3) ... [2021-10-28 09:24:33,808 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2021-10-28 09:24:33,814 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:24:33,814 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:24:33,880 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:24:33,901 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=PETRI_NET, 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 [2021-10-28 09:24:33,902 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 09:24:33,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 23 states have internal predecessors, (39), 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) [2021-10-28 09:24:33,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-28 09:24:33,938 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:24:33,938 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-28 09:24:33,939 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:24:33,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:24:33,945 INFO L85 PathProgramCache]: Analyzing trace with hash 28699838, now seen corresponding path program 1 times [2021-10-28 09:24:33,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:24:33,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894917704] [2021-10-28 09:24:33,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:24:33,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:24:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:24:34,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:24:34,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:24:34,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894917704] [2021-10-28 09:24:34,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894917704] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:24:34,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:24:34,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:24:34,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375357497] [2021-10-28 09:24:34,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:24:34,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:24:34,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:24:34,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:24:34,201 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 23 states have internal predecessors, (39), 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 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-10-28 09:24:34,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:24:34,261 INFO L93 Difference]: Finished difference Result 65 states and 109 transitions. [2021-10-28 09:24:34,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:24:34,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-10-28 09:24:34,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:24:34,272 INFO L225 Difference]: With dead ends: 65 [2021-10-28 09:24:34,272 INFO L226 Difference]: Without dead ends: 35 [2021-10-28 09:24:34,275 INFO L786 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 [2021-10-28 09:24:34,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-28 09:24:34,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-10-28 09:24:34,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 34 states have internal predecessors, (49), 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) [2021-10-28 09:24:34,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 49 transitions. [2021-10-28 09:24:34,308 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 49 transitions. Word has length 5 [2021-10-28 09:24:34,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:24:34,309 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 49 transitions. [2021-10-28 09:24:34,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-10-28 09:24:34,310 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 49 transitions. [2021-10-28 09:24:34,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:24:34,310 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:24:34,311 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:24:34,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:24:34,311 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:24:34,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:24:34,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1523322994, now seen corresponding path program 1 times [2021-10-28 09:24:34,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:24:34,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032017940] [2021-10-28 09:24:34,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:24:34,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:24:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:24:34,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:24:34,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:24:34,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032017940] [2021-10-28 09:24:34,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032017940] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:24:34,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:24:34,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:24:34,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171315018] [2021-10-28 09:24:34,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:24:34,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:24:34,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:24:34,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:24:34,363 INFO L87 Difference]: Start difference. First operand 35 states and 49 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-10-28 09:24:34,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:24:34,401 INFO L93 Difference]: Finished difference Result 66 states and 99 transitions. [2021-10-28 09:24:34,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:24:34,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2021-10-28 09:24:34,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:24:34,403 INFO L225 Difference]: With dead ends: 66 [2021-10-28 09:24:34,403 INFO L226 Difference]: Without dead ends: 48 [2021-10-28 09:24:34,404 INFO L786 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 [2021-10-28 09:24:34,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-28 09:24:34,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-10-28 09:24:34,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.425531914893617) internal successors, (67), 47 states have internal predecessors, (67), 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) [2021-10-28 09:24:34,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 67 transitions. [2021-10-28 09:24:34,413 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 67 transitions. Word has length 10 [2021-10-28 09:24:34,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:24:34,414 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 67 transitions. [2021-10-28 09:24:34,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-10-28 09:24:34,415 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 67 transitions. [2021-10-28 09:24:34,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:24:34,416 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:24:34,416 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:24:34,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:24:34,416 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:24:34,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:24:34,417 INFO L85 PathProgramCache]: Analyzing trace with hash 864936600, now seen corresponding path program 1 times [2021-10-28 09:24:34,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:24:34,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482850275] [2021-10-28 09:24:34,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:24:34,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:24:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:24:34,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:24:34,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:24:34,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482850275] [2021-10-28 09:24:34,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482850275] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:24:34,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:24:34,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:24:34,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190127246] [2021-10-28 09:24:34,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:24:34,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:24:34,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:24:34,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:24:34,496 INFO L87 Difference]: Start difference. First operand 48 states and 67 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-10-28 09:24:34,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:24:34,553 INFO L93 Difference]: Finished difference Result 89 states and 127 transitions. [2021-10-28 09:24:34,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:24:34,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2021-10-28 09:24:34,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:24:34,557 INFO L225 Difference]: With dead ends: 89 [2021-10-28 09:24:34,557 INFO L226 Difference]: Without dead ends: 58 [2021-10-28 09:24:34,558 INFO L786 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 [2021-10-28 09:24:34,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-28 09:24:34,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-10-28 09:24:34,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 55 states have internal predecessors, (76), 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) [2021-10-28 09:24:34,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2021-10-28 09:24:34,577 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 17 [2021-10-28 09:24:34,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:24:34,578 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2021-10-28 09:24:34,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-10-28 09:24:34,579 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2021-10-28 09:24:34,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:24:34,581 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:24:34,581 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:24:34,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:24:34,582 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:24:34,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:24:34,583 INFO L85 PathProgramCache]: Analyzing trace with hash 163872022, now seen corresponding path program 1 times [2021-10-28 09:24:34,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:24:34,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277607464] [2021-10-28 09:24:34,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:24:34,584 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:24:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:24:34,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 09:24:34,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:24:34,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277607464] [2021-10-28 09:24:34,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277607464] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:24:34,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:24:34,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:24:34,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568611265] [2021-10-28 09:24:34,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:24:34,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:24:34,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:24:34,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:24:34,625 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-10-28 09:24:34,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:24:34,678 INFO L93 Difference]: Finished difference Result 117 states and 164 transitions. [2021-10-28 09:24:34,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:24:34,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 17 [2021-10-28 09:24:34,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:24:34,680 INFO L225 Difference]: With dead ends: 117 [2021-10-28 09:24:34,680 INFO L226 Difference]: Without dead ends: 78 [2021-10-28 09:24:34,681 INFO L786 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 [2021-10-28 09:24:34,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-28 09:24:34,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-10-28 09:24:34,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.4133333333333333) internal successors, (106), 75 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) [2021-10-28 09:24:34,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 106 transitions. [2021-10-28 09:24:34,695 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 106 transitions. Word has length 17 [2021-10-28 09:24:34,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:24:34,695 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 106 transitions. [2021-10-28 09:24:34,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-10-28 09:24:34,696 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 106 transitions. [2021-10-28 09:24:34,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 09:24:34,697 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:24:34,697 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:24:34,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:24:34,697 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:24:34,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:24:34,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1464847913, now seen corresponding path program 1 times [2021-10-28 09:24:34,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:24:34,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662192577] [2021-10-28 09:24:34,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:24:34,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:24:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:24:34,767 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 09:24:34,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:24:34,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662192577] [2021-10-28 09:24:34,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662192577] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:24:34,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:24:34,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:24:34,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120975048] [2021-10-28 09:24:34,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:24:34,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:24:34,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:24:34,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:24:34,772 INFO L87 Difference]: Start difference. First operand 76 states and 106 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-10-28 09:24:34,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:24:34,815 INFO L93 Difference]: Finished difference Result 146 states and 204 transitions. [2021-10-28 09:24:34,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:24:34,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 20 [2021-10-28 09:24:34,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:24:34,817 INFO L225 Difference]: With dead ends: 146 [2021-10-28 09:24:34,817 INFO L226 Difference]: Without dead ends: 58 [2021-10-28 09:24:34,818 INFO L786 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 [2021-10-28 09:24:34,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-28 09:24:34,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-10-28 09:24:34,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2545454545454546) internal successors, (69), 55 states have internal predecessors, (69), 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) [2021-10-28 09:24:34,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2021-10-28 09:24:34,839 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 20 [2021-10-28 09:24:34,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:24:34,840 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2021-10-28 09:24:34,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-10-28 09:24:34,840 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2021-10-28 09:24:34,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 09:24:34,842 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:24:34,842 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:24:34,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:24:34,843 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:24:34,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:24:34,843 INFO L85 PathProgramCache]: Analyzing trace with hash -12347436, now seen corresponding path program 1 times [2021-10-28 09:24:34,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:24:34,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266196916] [2021-10-28 09:24:34,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:24:34,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:24:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:24:34,890 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-28 09:24:34,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:24:34,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266196916] [2021-10-28 09:24:34,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266196916] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:24:34,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:24:34,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:24:34,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020915026] [2021-10-28 09:24:34,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:24:34,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:24:34,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:24:34,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:24:34,894 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-10-28 09:24:34,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:24:34,921 INFO L93 Difference]: Finished difference Result 90 states and 108 transitions. [2021-10-28 09:24:34,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:24:34,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 34 [2021-10-28 09:24:34,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:24:34,922 INFO L225 Difference]: With dead ends: 90 [2021-10-28 09:24:34,922 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 09:24:34,923 INFO L786 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 [2021-10-28 09:24:34,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 09:24:34,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 09:24:34,924 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) [2021-10-28 09:24:34,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 09:24:34,924 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2021-10-28 09:24:34,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:24:34,924 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:24:34,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-10-28 09:24:34,925 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:24:34,925 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 09:24:34,928 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:24:34,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:24:34,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 09:24:34,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:24:34,966 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:24:34,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:24:34,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:24:34,983 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:24:34,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:24:34,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:24:34,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:24:35,158 INFO L857 garLoopResultBuilder]: For program point L89-1(lines 65 118) no Hoare annotation was computed. [2021-10-28 09:24:35,159 INFO L860 garLoopResultBuilder]: At program point L151(lines 20 152) the Hoare annotation is: true [2021-10-28 09:24:35,159 INFO L857 garLoopResultBuilder]: For program point L81(lines 81 85) no Hoare annotation was computed. [2021-10-28 09:24:35,159 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 139) no Hoare annotation was computed. [2021-10-28 09:24:35,159 INFO L857 garLoopResultBuilder]: For program point L69-1(lines 65 118) no Hoare annotation was computed. [2021-10-28 09:24:35,159 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 09:24:35,160 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 09:24:35,160 INFO L857 garLoopResultBuilder]: For program point L61(lines 61 120) no Hoare annotation was computed. [2021-10-28 09:24:35,160 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 09:24:35,160 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 122) no Hoare annotation was computed. [2021-10-28 09:24:35,160 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 150) no Hoare annotation was computed. [2021-10-28 09:24:35,160 INFO L860 garLoopResultBuilder]: At program point L148(lines 20 152) the Hoare annotation is: true [2021-10-28 09:24:35,162 INFO L853 garLoopResultBuilder]: At program point L111(lines 29 146) the Hoare annotation is: (or (and (<= ULTIMATE.start_main_~blastFlag~0 3) (<= 8640 ULTIMATE.start_main_~s__state~0) (not (= ULTIMATE.start_main_~s__hit~0 0))) (= ULTIMATE.start_main_~blastFlag~0 2) (= ULTIMATE.start_main_~blastFlag~0 0)) [2021-10-28 09:24:35,162 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 109) no Hoare annotation was computed. [2021-10-28 09:24:35,162 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 136) no Hoare annotation was computed. [2021-10-28 09:24:35,163 INFO L853 garLoopResultBuilder]: At program point L37(lines 36 139) the Hoare annotation is: (or (= ULTIMATE.start_main_~blastFlag~0 2) (= ULTIMATE.start_main_~blastFlag~0 0)) [2021-10-28 09:24:35,163 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 09:24:35,163 INFO L853 garLoopResultBuilder]: At program point L62(lines 61 120) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (= ULTIMATE.start_main_~blastFlag~0 0)) (and (<= ULTIMATE.start_main_~blastFlag~0 3) .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0))) (and .cse0 (= ULTIMATE.start_main_~blastFlag~0 2)))) [2021-10-28 09:24:35,163 INFO L853 garLoopResultBuilder]: At program point L58(lines 57 122) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (= ULTIMATE.start_main_~blastFlag~0 0)) (and (<= ULTIMATE.start_main_~blastFlag~0 3) .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0))) (and .cse0 (= ULTIMATE.start_main_~blastFlag~0 2)))) [2021-10-28 09:24:35,163 INFO L853 garLoopResultBuilder]: At program point L108(lines 20 152) the Hoare annotation is: false [2021-10-28 09:24:35,164 INFO L853 garLoopResultBuilder]: At program point L42(lines 41 136) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~s__state~0 8512))) (or (and .cse0 (= ULTIMATE.start_main_~blastFlag~0 2)) (and .cse0 (= ULTIMATE.start_main_~blastFlag~0 0)))) [2021-10-28 09:24:35,164 INFO L857 garLoopResultBuilder]: For program point L104-1(lines 65 118) no Hoare annotation was computed. [2021-10-28 09:24:35,164 INFO L857 garLoopResultBuilder]: For program point L100-1(lines 65 118) no Hoare annotation was computed. [2021-10-28 09:24:35,164 INFO L857 garLoopResultBuilder]: For program point L30(line 30) no Hoare annotation was computed. [2021-10-28 09:24:35,167 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-10-28 09:24:35,169 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:24:35,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:24:35 BoogieIcfgContainer [2021-10-28 09:24:35,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:24:35,191 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:24:35,191 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:24:35,191 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:24:35,191 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:24:33" (3/4) ... [2021-10-28 09:24:35,195 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:24:35,213 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-28 09:24:35,213 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:24:35,214 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:24:35,214 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:24:35,290 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4d287-c19a-426b-b682-e3c6eb295158/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:24:35,290 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:24:35,292 INFO L168 Benchmark]: Toolchain (without parser) took 2096.67 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 76.7 MB in the beginning and 88.6 MB in the end (delta: -11.9 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:24:35,292 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 109.1 MB. Free memory is still 64.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:24:35,293 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.87 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 76.4 MB in the beginning and 106.7 MB in the end (delta: -30.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:24:35,297 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.25 ms. Allocated memory is still 132.1 MB. Free memory was 106.7 MB in the beginning and 105.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:24:35,297 INFO L168 Benchmark]: Boogie Preprocessor took 22.40 ms. Allocated memory is still 132.1 MB. Free memory was 105.3 MB in the beginning and 104.7 MB in the end (delta: 659.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:24:35,298 INFO L168 Benchmark]: RCFGBuilder took 296.87 ms. Allocated memory is still 132.1 MB. Free memory was 104.6 MB in the beginning and 94.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:24:35,298 INFO L168 Benchmark]: TraceAbstraction took 1389.65 ms. Allocated memory is still 132.1 MB. Free memory was 93.4 MB in the beginning and 92.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:24:35,300 INFO L168 Benchmark]: Witness Printer took 99.24 ms. Allocated memory is still 132.1 MB. Free memory was 92.0 MB in the beginning and 88.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:24:35,304 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 109.1 MB. Free memory is still 64.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 246.87 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 76.4 MB in the beginning and 106.7 MB in the end (delta: -30.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.25 ms. Allocated memory is still 132.1 MB. Free memory was 106.7 MB in the beginning and 105.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.40 ms. Allocated memory is still 132.1 MB. Free memory was 105.3 MB in the beginning and 104.7 MB in the end (delta: 659.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 296.87 ms. Allocated memory is still 132.1 MB. Free memory was 104.6 MB in the beginning and 94.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1389.65 ms. Allocated memory is still 132.1 MB. Free memory was 93.4 MB in the beginning and 92.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. * Witness Printer took 99.24 ms. Allocated memory is still 132.1 MB. Free memory was 92.0 MB in the beginning and 88.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 150]: 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, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 180 SDtfs, 78 SDslu, 94 SDs, 0 SdLazy, 91 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=4, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 31 NumberOfFragments, 95 HoareAnnotationTreeSize, 8 FomulaSimplifications, 72 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 34 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 174 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 43/43 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: 61]: Loop Invariant Derived loop invariant: ((8640 <= s__state && blastFlag == 0) || ((blastFlag <= 3 && 8640 <= s__state) && !(s__hit == 0))) || (8640 <= s__state && blastFlag == 2) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (((blastFlag <= 3 && 8640 <= s__state) && !(s__hit == 0)) || blastFlag == 2) || blastFlag == 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((8640 <= s__state && blastFlag == 0) || ((blastFlag <= 3 && 8640 <= s__state) && !(s__hit == 0))) || (8640 <= s__state && blastFlag == 2) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (s__state == 8512 && blastFlag == 2) || (s__state == 8512 && blastFlag == 0) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: blastFlag == 2 || blastFlag == 0 RESULT: Ultimate proved your program to be correct! [2021-10-28 09:24:35,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c4d287-c19a-426b-b682-e3c6eb295158/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...