./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label28.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2b6897-e4e2-452c-a1bf-03345d49d7d7/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2b6897-e4e2-452c-a1bf-03345d49d7d7/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2b6897-e4e2-452c-a1bf-03345d49d7d7/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2b6897-e4e2-452c-a1bf-03345d49d7d7/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label28.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2b6897-e4e2-452c-a1bf-03345d49d7d7/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2b6897-e4e2-452c-a1bf-03345d49d7d7/bin/utaipan-mTDlp9Zugs --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 a91360cde292feef26ce63dd86a79ea34c8e0be3 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:56:05,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:56:05,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:56:05,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:56:05,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:56:05,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:56:05,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:56:05,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:56:05,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:56:05,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:56:05,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:56:05,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:56:05,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:56:05,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:56:05,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:56:05,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:56:05,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:56:05,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:56:05,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:56:05,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:56:05,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:56:05,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:56:05,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:56:05,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:56:05,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:56:05,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:56:05,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:56:05,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:56:05,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:56:05,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:56:05,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:56:05,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:56:05,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:56:05,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:56:05,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:56:05,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:56:05,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:56:05,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:56:05,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:56:05,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:56:05,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:56:05,817 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2b6897-e4e2-452c-a1bf-03345d49d7d7/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:56:05,864 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:56:05,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:56:05,869 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:56:05,870 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:56:05,870 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:56:05,870 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:56:05,870 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:56:05,871 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:56:05,871 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:56:05,871 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:56:05,872 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:56:05,873 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:56:05,873 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:56:05,873 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:56:05,874 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:56:05,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:56:05,875 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:56:05,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:56:05,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:56:05,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:56:05,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:56:05,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:56:05,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:56:05,877 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:56:05,877 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:56:05,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:56:05,877 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:56:05,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:56:05,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:56:05,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:56:05,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:56:05,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:56:05,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:56:05,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:56:05,881 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:56:05,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:56:05,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:56:05,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:56:05,882 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:56:05,883 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_cc2b6897-e4e2-452c-a1bf-03345d49d7d7/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2b6897-e4e2-452c-a1bf-03345d49d7d7/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a91360cde292feef26ce63dd86a79ea34c8e0be3 [2021-10-16 02:56:06,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:56:06,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:56:06,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:56:06,215 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:56:06,216 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:56:06,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2b6897-e4e2-452c-a1bf-03345d49d7d7/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/eca-rers2012/Problem02_label28.c [2021-10-16 02:56:06,289 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2b6897-e4e2-452c-a1bf-03345d49d7d7/bin/utaipan-mTDlp9Zugs/data/779b209e2/045531feb14a47f2bbe1fc74ebd6f05a/FLAG71d7a53fa [2021-10-16 02:56:06,892 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:56:06,897 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2b6897-e4e2-452c-a1bf-03345d49d7d7/sv-benchmarks/c/eca-rers2012/Problem02_label28.c [2021-10-16 02:56:06,919 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2b6897-e4e2-452c-a1bf-03345d49d7d7/bin/utaipan-mTDlp9Zugs/data/779b209e2/045531feb14a47f2bbe1fc74ebd6f05a/FLAG71d7a53fa [2021-10-16 02:56:07,119 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2b6897-e4e2-452c-a1bf-03345d49d7d7/bin/utaipan-mTDlp9Zugs/data/779b209e2/045531feb14a47f2bbe1fc74ebd6f05a [2021-10-16 02:56:07,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:56:07,131 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:56:07,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:56:07,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:56:07,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:56:07,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:56:07" (1/1) ... [2021-10-16 02:56:07,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51b93aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:07, skipping insertion in model container [2021-10-16 02:56:07,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:56:07" (1/1) ... [2021-10-16 02:56:07,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:56:07,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:56:07,627 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_cc2b6897-e4e2-452c-a1bf-03345d49d7d7/sv-benchmarks/c/eca-rers2012/Problem02_label28.c[19513,19526] [2021-10-16 02:56:07,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:56:07,660 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:56:07,775 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_cc2b6897-e4e2-452c-a1bf-03345d49d7d7/sv-benchmarks/c/eca-rers2012/Problem02_label28.c[19513,19526] [2021-10-16 02:56:07,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:56:07,816 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:56:07,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:07 WrapperNode [2021-10-16 02:56:07,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:56:07,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:56:07,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:56:07,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:56:07,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:07" (1/1) ... [2021-10-16 02:56:07,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:07" (1/1) ... [2021-10-16 02:56:07,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:56:07,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:56:07,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:56:07,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:56:07,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:07" (1/1) ... [2021-10-16 02:56:07,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:07" (1/1) ... [2021-10-16 02:56:07,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:07" (1/1) ... [2021-10-16 02:56:07,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:07" (1/1) ... [2021-10-16 02:56:07,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:07" (1/1) ... [2021-10-16 02:56:08,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:07" (1/1) ... [2021-10-16 02:56:08,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:07" (1/1) ... [2021-10-16 02:56:08,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:56:08,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:56:08,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:56:08,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:56:08,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:07" (1/1) ... [2021-10-16 02:56:08,056 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:56:08,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2b6897-e4e2-452c-a1bf-03345d49d7d7/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:56:08,084 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2b6897-e4e2-452c-a1bf-03345d49d7d7/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:56:08,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2b6897-e4e2-452c-a1bf-03345d49d7d7/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:56:08,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:56:08,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:56:08,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:56:08,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:56:10,157 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:56:10,157 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:56:10,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:56:10 BoogieIcfgContainer [2021-10-16 02:56:10,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:56:10,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:56:10,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:56:10,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:56:10,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:56:07" (1/3) ... [2021-10-16 02:56:10,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6056e658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:56:10, skipping insertion in model container [2021-10-16 02:56:10,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:07" (2/3) ... [2021-10-16 02:56:10,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6056e658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:56:10, skipping insertion in model container [2021-10-16 02:56:10,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:56:10" (3/3) ... [2021-10-16 02:56:10,168 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label28.c [2021-10-16 02:56:10,174 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:56:10,174 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:56:10,237 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:56:10,247 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:56:10,248 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:56:10,267 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:10,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-16 02:56:10,288 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:10,288 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:56:10,289 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:56:10,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:10,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1243331318, now seen corresponding path program 1 times [2021-10-16 02:56:10,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:56:10,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172869374] [2021-10-16 02:56:10,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:10,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:56:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:10,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:10,723 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:56:10,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172869374] [2021-10-16 02:56:10,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172869374] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:56:10,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:56:10,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:56:10,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374045829] [2021-10-16 02:56:10,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:56:10,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:56:10,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:56:10,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:56:10,779 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:11,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:56:11,335 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-16 02:56:11,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:56:11,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-16 02:56:11,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:56:11,347 INFO L225 Difference]: With dead ends: 251 [2021-10-16 02:56:11,347 INFO L226 Difference]: Without dead ends: 163 [2021-10-16 02:56:11,350 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:56:11,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-16 02:56:11,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-16 02:56:11,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.9320987654320987) internal successors, (313), 162 states have internal predecessors, (313), 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) [2021-10-16 02:56:11,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2021-10-16 02:56:11,401 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2021-10-16 02:56:11,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:56:11,402 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2021-10-16 02:56:11,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:11,402 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2021-10-16 02:56:11,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-16 02:56:11,407 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:11,407 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:56:11,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:56:11,408 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:56:11,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:11,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1299306326, now seen corresponding path program 1 times [2021-10-16 02:56:11,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:56:11,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206219257] [2021-10-16 02:56:11,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:11,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:56:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:11,474 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:11,474 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:56:11,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206219257] [2021-10-16 02:56:11,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206219257] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:56:11,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:56:11,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:56:11,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627306172] [2021-10-16 02:56:11,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:56:11,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:56:11,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:56:11,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:56:11,478 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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) [2021-10-16 02:56:11,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:56:11,851 INFO L93 Difference]: Finished difference Result 487 states and 937 transitions. [2021-10-16 02:56:11,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:56:11,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 91 [2021-10-16 02:56:11,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:56:11,855 INFO L225 Difference]: With dead ends: 487 [2021-10-16 02:56:11,856 INFO L226 Difference]: Without dead ends: 325 [2021-10-16 02:56:11,857 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:56:11,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-10-16 02:56:11,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2021-10-16 02:56:11,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.84472049689441) internal successors, (594), 322 states have internal predecessors, (594), 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) [2021-10-16 02:56:11,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 594 transitions. [2021-10-16 02:56:11,900 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 594 transitions. Word has length 91 [2021-10-16 02:56:11,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:56:11,902 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 594 transitions. [2021-10-16 02:56:11,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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) [2021-10-16 02:56:11,903 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 594 transitions. [2021-10-16 02:56:11,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-16 02:56:11,909 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:11,910 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:56:11,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:56:11,910 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:56:11,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:11,911 INFO L82 PathProgramCache]: Analyzing trace with hash 588074389, now seen corresponding path program 1 times [2021-10-16 02:56:11,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:56:11,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937110180] [2021-10-16 02:56:11,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:11,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:56:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:11,994 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:56:11,995 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:56:11,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937110180] [2021-10-16 02:56:11,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937110180] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:56:11,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:56:11,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:56:11,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103670616] [2021-10-16 02:56:11,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:56:11,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:56:11,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:56:11,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:56:11,999 INFO L87 Difference]: Start difference. First operand 323 states and 594 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:12,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:56:12,355 INFO L93 Difference]: Finished difference Result 885 states and 1638 transitions. [2021-10-16 02:56:12,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:56:12,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-16 02:56:12,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:56:12,360 INFO L225 Difference]: With dead ends: 885 [2021-10-16 02:56:12,360 INFO L226 Difference]: Without dead ends: 563 [2021-10-16 02:56:12,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:56:12,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-10-16 02:56:12,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2021-10-16 02:56:12,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.616182572614108) internal successors, (779), 482 states have internal predecessors, (779), 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) [2021-10-16 02:56:12,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 779 transitions. [2021-10-16 02:56:12,390 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 779 transitions. Word has length 95 [2021-10-16 02:56:12,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:56:12,390 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 779 transitions. [2021-10-16 02:56:12,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:12,391 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 779 transitions. [2021-10-16 02:56:12,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-16 02:56:12,397 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:12,397 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:56:12,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:56:12,398 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:56:12,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:12,399 INFO L82 PathProgramCache]: Analyzing trace with hash 341417776, now seen corresponding path program 1 times [2021-10-16 02:56:12,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:56:12,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319967877] [2021-10-16 02:56:12,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:12,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:56:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:12,457 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:56:12,457 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:56:12,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319967877] [2021-10-16 02:56:12,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319967877] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:56:12,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:56:12,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:56:12,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359472389] [2021-10-16 02:56:12,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:56:12,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:56:12,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:56:12,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:56:12,461 INFO L87 Difference]: Start difference. First operand 483 states and 779 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:12,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:56:12,832 INFO L93 Difference]: Finished difference Result 1205 states and 2008 transitions. [2021-10-16 02:56:12,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:56:12,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-16 02:56:12,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:56:12,837 INFO L225 Difference]: With dead ends: 1205 [2021-10-16 02:56:12,837 INFO L226 Difference]: Without dead ends: 723 [2021-10-16 02:56:12,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:56:12,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-10-16 02:56:12,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2021-10-16 02:56:12,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 1.4750692520775623) internal successors, (1065), 722 states have internal predecessors, (1065), 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) [2021-10-16 02:56:12,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1065 transitions. [2021-10-16 02:56:12,869 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1065 transitions. Word has length 100 [2021-10-16 02:56:12,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:56:12,869 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 1065 transitions. [2021-10-16 02:56:12,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:12,870 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1065 transitions. [2021-10-16 02:56:12,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-16 02:56:12,873 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:12,873 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:56:12,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:56:12,874 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:56:12,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:12,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1329941030, now seen corresponding path program 1 times [2021-10-16 02:56:12,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:56:12,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561963979] [2021-10-16 02:56:12,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:12,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:56:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:12,938 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:56:12,939 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:56:12,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561963979] [2021-10-16 02:56:12,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561963979] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:56:12,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:56:12,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:56:12,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161770325] [2021-10-16 02:56:12,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:56:12,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:56:12,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:56:12,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:56:12,942 INFO L87 Difference]: Start difference. First operand 723 states and 1065 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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) [2021-10-16 02:56:13,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:56:13,287 INFO L93 Difference]: Finished difference Result 1925 states and 2912 transitions. [2021-10-16 02:56:13,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:56:13,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 101 [2021-10-16 02:56:13,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:56:13,297 INFO L225 Difference]: With dead ends: 1925 [2021-10-16 02:56:13,297 INFO L226 Difference]: Without dead ends: 1203 [2021-10-16 02:56:13,299 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:56:13,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2021-10-16 02:56:13,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1203. [2021-10-16 02:56:13,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.4334442595673877) internal successors, (1723), 1202 states have internal predecessors, (1723), 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) [2021-10-16 02:56:13,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1723 transitions. [2021-10-16 02:56:13,374 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1723 transitions. Word has length 101 [2021-10-16 02:56:13,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:56:13,375 INFO L470 AbstractCegarLoop]: Abstraction has 1203 states and 1723 transitions. [2021-10-16 02:56:13,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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) [2021-10-16 02:56:13,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1723 transitions. [2021-10-16 02:56:13,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-16 02:56:13,379 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:13,380 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:56:13,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 02:56:13,381 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:56:13,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:13,381 INFO L82 PathProgramCache]: Analyzing trace with hash -47592282, now seen corresponding path program 1 times [2021-10-16 02:56:13,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:56:13,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550723137] [2021-10-16 02:56:13,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:13,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:56:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:13,473 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:56:13,474 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:56:13,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550723137] [2021-10-16 02:56:13,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550723137] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:56:13,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:56:13,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:56:13,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18016998] [2021-10-16 02:56:13,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:56:13,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:56:13,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:56:13,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:56:13,478 INFO L87 Difference]: Start difference. First operand 1203 states and 1723 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2021-10-16 02:56:13,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:56:13,926 INFO L93 Difference]: Finished difference Result 2885 states and 4077 transitions. [2021-10-16 02:56:13,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:56:13,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 104 [2021-10-16 02:56:13,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:56:13,939 INFO L225 Difference]: With dead ends: 2885 [2021-10-16 02:56:13,940 INFO L226 Difference]: Without dead ends: 1683 [2021-10-16 02:56:13,942 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:56:13,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2021-10-16 02:56:14,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1683. [2021-10-16 02:56:14,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 1.334720570749108) internal successors, (2245), 1682 states have internal predecessors, (2245), 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) [2021-10-16 02:56:14,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2245 transitions. [2021-10-16 02:56:14,015 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2245 transitions. Word has length 104 [2021-10-16 02:56:14,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:56:14,015 INFO L470 AbstractCegarLoop]: Abstraction has 1683 states and 2245 transitions. [2021-10-16 02:56:14,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2021-10-16 02:56:14,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2245 transitions. [2021-10-16 02:56:14,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-16 02:56:14,020 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:14,021 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:56:14,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 02:56:14,021 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:56:14,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:14,022 INFO L82 PathProgramCache]: Analyzing trace with hash 91169892, now seen corresponding path program 1 times [2021-10-16 02:56:14,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:56:14,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520125092] [2021-10-16 02:56:14,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:14,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:56:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:14,230 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:14,230 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:56:14,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520125092] [2021-10-16 02:56:14,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520125092] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:56:14,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997990831] [2021-10-16 02:56:14,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:14,231 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:56:14,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2b6897-e4e2-452c-a1bf-03345d49d7d7/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:56:14,233 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2b6897-e4e2-452c-a1bf-03345d49d7d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:56:14,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2b6897-e4e2-452c-a1bf-03345d49d7d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:56:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:14,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:56:14,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:56:14,754 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-16 02:56:14,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:56:15,122 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-16 02:56:15,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997990831] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:56:15,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-16 02:56:15,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-16 02:56:15,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415907058] [2021-10-16 02:56:15,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:56:15,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:56:15,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:56:15,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:56:15,125 INFO L87 Difference]: Start difference. First operand 1683 states and 2245 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:15,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:56:15,462 INFO L93 Difference]: Finished difference Result 3365 states and 4489 transitions. [2021-10-16 02:56:15,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:56:15,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-10-16 02:56:15,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:56:15,476 INFO L225 Difference]: With dead ends: 3365 [2021-10-16 02:56:15,476 INFO L226 Difference]: Without dead ends: 1683 [2021-10-16 02:56:15,478 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 23.2ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:56:15,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2021-10-16 02:56:15,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1283. [2021-10-16 02:56:15,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1282 states have (on average 1.2121684867394695) internal successors, (1554), 1282 states have internal predecessors, (1554), 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) [2021-10-16 02:56:15,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1554 transitions. [2021-10-16 02:56:15,518 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1554 transitions. Word has length 107 [2021-10-16 02:56:15,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:56:15,519 INFO L470 AbstractCegarLoop]: Abstraction has 1283 states and 1554 transitions. [2021-10-16 02:56:15,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:15,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1554 transitions. [2021-10-16 02:56:15,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-10-16 02:56:15,523 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:15,523 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:56:15,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2b6897-e4e2-452c-a1bf-03345d49d7d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:56:15,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2b6897-e4e2-452c-a1bf-03345d49d7d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-16 02:56:15,744 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:56:15,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:15,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1786400179, now seen corresponding path program 1 times [2021-10-16 02:56:15,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:56:15,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572851515] [2021-10-16 02:56:15,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:15,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:56:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:15,791 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:56:15,791 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:56:15,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572851515] [2021-10-16 02:56:15,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572851515] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:56:15,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:56:15,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:56:15,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691183679] [2021-10-16 02:56:15,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:56:15,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:56:15,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:56:15,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:56:15,794 INFO L87 Difference]: Start difference. First operand 1283 states and 1554 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2021-10-16 02:56:16,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:56:16,164 INFO L93 Difference]: Finished difference Result 2885 states and 3607 transitions. [2021-10-16 02:56:16,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:56:16,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 124 [2021-10-16 02:56:16,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:56:16,178 INFO L225 Difference]: With dead ends: 2885 [2021-10-16 02:56:16,178 INFO L226 Difference]: Without dead ends: 1603 [2021-10-16 02:56:16,183 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:56:16,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2021-10-16 02:56:16,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1523. [2021-10-16 02:56:16,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.240473061760841) internal successors, (1888), 1522 states have internal predecessors, (1888), 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) [2021-10-16 02:56:16,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1888 transitions. [2021-10-16 02:56:16,239 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1888 transitions. Word has length 124 [2021-10-16 02:56:16,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:56:16,241 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 1888 transitions. [2021-10-16 02:56:16,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2021-10-16 02:56:16,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1888 transitions. [2021-10-16 02:56:16,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-10-16 02:56:16,248 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:16,248 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:56:16,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-16 02:56:16,252 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:56:16,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:16,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1107449828, now seen corresponding path program 1 times [2021-10-16 02:56:16,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:56:16,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474691260] [2021-10-16 02:56:16,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:16,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:56:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:16,455 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-10-16 02:56:16,461 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:56:16,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474691260] [2021-10-16 02:56:16,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474691260] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:56:16,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:56:16,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:56:16,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104430582] [2021-10-16 02:56:16,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:56:16,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:56:16,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:56:16,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:56:16,465 INFO L87 Difference]: Start difference. First operand 1523 states and 1888 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 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) [2021-10-16 02:56:16,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:56:16,670 INFO L93 Difference]: Finished difference Result 2723 states and 3428 transitions. [2021-10-16 02:56:16,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:56:16,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 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 210 [2021-10-16 02:56:16,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:56:16,671 INFO L225 Difference]: With dead ends: 2723 [2021-10-16 02:56:16,671 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:56:16,674 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:56:16,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:56:16,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:56:16,674 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) [2021-10-16 02:56:16,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:56:16,675 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 210 [2021-10-16 02:56:16,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:56:16,675 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:56:16,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 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) [2021-10-16 02:56:16,676 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:56:16,676 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:56:16,679 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:56:16,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-16 02:56:16,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:56:16,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:56:16,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:56:16,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:56:16,830 INFO L857 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-16 02:56:16,831 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-16 02:56:16,832 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-16 02:56:16,832 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-16 02:56:16,832 INFO L857 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-16 02:56:16,832 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-16 02:56:16,832 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-16 02:56:16,833 INFO L857 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-16 02:56:16,834 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-16 02:56:16,836 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-16 02:56:16,836 INFO L857 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-16 02:56:16,840 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-16 02:56:16,840 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-16 02:56:16,841 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-16 02:56:16,841 INFO L857 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-16 02:56:16,845 INFO L857 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-16 02:56:16,846 INFO L857 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-16 02:56:16,846 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-16 02:56:16,846 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-16 02:56:16,846 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-16 02:56:16,846 INFO L857 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-16 02:56:16,846 INFO L857 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-16 02:56:16,847 INFO L857 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-16 02:56:16,847 INFO L857 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-16 02:56:16,847 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-16 02:56:16,847 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-16 02:56:16,847 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:56:16,848 INFO L857 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-16 02:56:16,848 INFO L857 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-16 02:56:16,848 INFO L857 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-16 02:56:16,848 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-16 02:56:16,848 INFO L857 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-16 02:56:16,848 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-16 02:56:16,849 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-16 02:56:16,849 INFO L857 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-16 02:56:16,849 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-16 02:56:16,849 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 554) no Hoare annotation was computed. [2021-10-16 02:56:16,849 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-16 02:56:16,850 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-16 02:56:16,850 INFO L857 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-16 02:56:16,850 INFO L857 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-16 02:56:16,850 INFO L857 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-16 02:56:16,850 INFO L857 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-16 02:56:16,851 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-16 02:56:16,851 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-16 02:56:16,851 INFO L857 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-16 02:56:16,851 INFO L857 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-16 02:56:16,851 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-16 02:56:16,851 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-16 02:56:16,852 INFO L857 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-16 02:56:16,852 INFO L857 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-16 02:56:16,852 INFO L857 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-16 02:56:16,852 INFO L857 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-16 02:56:16,853 INFO L853 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (= ~a25~0 1)) (.cse1 (<= ~a17~0 8)) (.cse2 (= ~a19~0 1))) (or (and .cse0 (<= 8 ~a17~0) .cse1 .cse2) (and .cse1 (<= ~a28~0 10)) (and .cse0 (= ~a11~0 0) .cse1 .cse2))) [2021-10-16 02:56:16,853 INFO L857 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-16 02:56:16,853 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-16 02:56:16,853 INFO L860 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-16 02:56:16,853 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-16 02:56:16,854 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-16 02:56:16,854 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-16 02:56:16,854 INFO L857 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-16 02:56:16,854 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-16 02:56:16,854 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:56:16,854 INFO L857 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-16 02:56:16,855 INFO L857 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-16 02:56:16,855 INFO L853 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (= ~a25~0 1)) (.cse1 (<= ~a17~0 8)) (.cse2 (= ~a19~0 1))) (or (and .cse0 (<= 8 ~a17~0) .cse1 .cse2) (and .cse1 (<= ~a28~0 10)) (and .cse0 (= ~a11~0 0) .cse1 .cse2))) [2021-10-16 02:56:16,855 INFO L857 garLoopResultBuilder]: For program point L550-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:56:16,855 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-16 02:56:16,856 INFO L857 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-16 02:56:16,856 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-16 02:56:16,856 INFO L857 garLoopResultBuilder]: For program point L553-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:56:16,856 INFO L857 garLoopResultBuilder]: For program point L554(line 554) no Hoare annotation was computed. [2021-10-16 02:56:16,856 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-16 02:56:16,856 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-16 02:56:16,857 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-16 02:56:16,857 INFO L857 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-16 02:56:16,857 INFO L857 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-16 02:56:16,857 INFO L857 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-16 02:56:16,857 INFO L857 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-16 02:56:16,857 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-16 02:56:16,858 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-16 02:56:16,858 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-16 02:56:16,858 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-16 02:56:16,858 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-16 02:56:16,858 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-16 02:56:16,863 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:56:16,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:56:16 BoogieIcfgContainer [2021-10-16 02:56:16,898 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:56:16,898 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:56:16,899 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:56:16,899 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:56:16,900 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:56:10" (3/4) ... [2021-10-16 02:56:16,904 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:56:16,942 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2021-10-16 02:56:16,944 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-16 02:56:16,946 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-16 02:56:16,948 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-16 02:56:17,103 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2b6897-e4e2-452c-a1bf-03345d49d7d7/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:56:17,103 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:56:17,105 INFO L168 Benchmark]: Toolchain (without parser) took 9972.70 ms. Allocated memory was 104.9 MB in the beginning and 205.5 MB in the end (delta: 100.7 MB). Free memory was 63.6 MB in the beginning and 119.7 MB in the end (delta: -56.2 MB). Peak memory consumption was 44.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:17,105 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 104.9 MB. Free memory is still 82.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:56:17,106 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.82 ms. Allocated memory is still 104.9 MB. Free memory was 63.3 MB in the beginning and 63.7 MB in the end (delta: -426.0 kB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:17,106 INFO L168 Benchmark]: Boogie Procedure Inliner took 106.36 ms. Allocated memory is still 104.9 MB. Free memory was 63.7 MB in the beginning and 58.4 MB in the end (delta: 5.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:17,107 INFO L168 Benchmark]: Boogie Preprocessor took 108.16 ms. Allocated memory is still 104.9 MB. Free memory was 58.4 MB in the beginning and 54.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:17,107 INFO L168 Benchmark]: RCFGBuilder took 2125.36 ms. Allocated memory was 104.9 MB in the beginning and 138.4 MB in the end (delta: 33.6 MB). Free memory was 54.2 MB in the beginning and 68.5 MB in the end (delta: -14.4 MB). Peak memory consumption was 38.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:17,108 INFO L168 Benchmark]: TraceAbstraction took 6736.16 ms. Allocated memory was 138.4 MB in the beginning and 205.5 MB in the end (delta: 67.1 MB). Free memory was 68.5 MB in the beginning and 134.4 MB in the end (delta: -65.9 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:17,108 INFO L168 Benchmark]: Witness Printer took 204.82 ms. Allocated memory is still 205.5 MB. Free memory was 134.4 MB in the beginning and 119.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:17,110 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 104.9 MB. Free memory is still 82.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 681.82 ms. Allocated memory is still 104.9 MB. Free memory was 63.3 MB in the beginning and 63.7 MB in the end (delta: -426.0 kB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 106.36 ms. Allocated memory is still 104.9 MB. Free memory was 63.7 MB in the beginning and 58.4 MB in the end (delta: 5.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 108.16 ms. Allocated memory is still 104.9 MB. Free memory was 58.4 MB in the beginning and 54.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2125.36 ms. Allocated memory was 104.9 MB in the beginning and 138.4 MB in the end (delta: 33.6 MB). Free memory was 54.2 MB in the beginning and 68.5 MB in the end (delta: -14.4 MB). Peak memory consumption was 38.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6736.16 ms. Allocated memory was 138.4 MB in the beginning and 205.5 MB in the end (delta: 67.1 MB). Free memory was 68.5 MB in the beginning and 134.4 MB in the end (delta: -65.9 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. * Witness Printer took 204.82 ms. Allocated memory is still 205.5 MB. Free memory was 134.4 MB in the beginning and 119.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 554]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6627.4ms, OverallIterations: 9, TraceHistogramMax: 5, EmptinessCheckTime: 62.5ms, AutomataDifference: 3506.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 149.6ms, InitialAbstractionConstructionTime: 14.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 593 SDtfs, 706 SDslu, 41 SDs, 0 SdLazy, 2047 SolverSat, 528 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2289.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 235 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 48.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1683occurred in iteration=6, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 381.6ms AutomataMinimizationTime, 9 MinimizatonAttempts, 562 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 35 NumberOfFragments, 69 HoareAnnotationTreeSize, 3 FomulaSimplifications, 646 FormulaSimplificationTreeSizeReduction, 52.9ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 88.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 97.1ms SsaConstructionTime, 283.2ms SatisfiabilityAnalysisTime, 1599.1ms InterpolantComputationTime, 1119 NumberOfCodeBlocks, 1119 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1215 ConstructedInterpolants, 0 QuantifiedInterpolants, 3587 SizeOfPredicates, 0 NumberOfNonLiveVariables, 293 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 498/514 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((a25 == 1 && 8 <= a17) && a17 <= 8) && a19 == 1) || (a17 <= 8 && a28 <= 10)) || (((a25 == 1 && a11 == 0) && a17 <= 8) && a19 == 1) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((a25 == 1 && 8 <= a17) && a17 <= 8) && a19 == 1) || (a17 <= 8 && a28 <= 10)) || (((a25 == 1 && a11 == 0) && a17 <= 8) && a19 == 1) RESULT: Ultimate proved your program to be correct! [2021-10-16 02:56:17,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2b6897-e4e2-452c-a1bf-03345d49d7d7/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...