./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label22.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a69b61-7061-4fd6-ae32-498a30b9f945/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a69b61-7061-4fd6-ae32-498a30b9f945/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a69b61-7061-4fd6-ae32-498a30b9f945/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a69b61-7061-4fd6-ae32-498a30b9f945/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label22.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a69b61-7061-4fd6-ae32-498a30b9f945/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a69b61-7061-4fd6-ae32-498a30b9f945/bin/utaipan-q2qaUkNPG8 --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 d347897b483e2048bb7af7fe5bb03b68d0369bfa .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:54:24,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:54:24,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:54:24,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:54:24,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:54:24,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:54:24,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:54:24,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:54:24,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:54:24,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:54:24,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:54:24,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:54:24,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:54:24,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:54:24,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:54:24,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:54:24,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:54:24,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:54:24,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:54:24,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:54:24,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:54:24,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:54:24,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:54:24,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:54:24,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:54:24,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:54:24,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:54:24,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:54:24,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:54:24,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:54:24,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:54:24,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:54:24,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:54:24,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:54:24,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:54:24,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:54:24,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:54:24,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:54:24,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:54:24,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:54:24,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:54:24,802 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a69b61-7061-4fd6-ae32-498a30b9f945/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 06:54:24,834 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:54:24,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:54:24,835 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:54:24,836 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:54:24,836 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:54:24,836 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:54:24,837 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 06:54:24,837 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:54:24,837 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:54:24,838 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 06:54:24,838 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 06:54:24,838 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:54:24,838 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 06:54:24,839 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 06:54:24,839 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 06:54:24,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:54:24,840 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:54:24,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:54:24,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:54:24,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:54:24,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:54:24,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:54:24,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:54:24,842 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:54:24,843 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:54:24,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:54:24,843 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:54:24,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:54:24,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:54:24,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:54:24,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:54:24,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:54:24,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:54:24,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:54:24,846 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 06:54:24,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 06:54:24,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:54:24,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:54:24,847 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:54:24,847 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_31a69b61-7061-4fd6-ae32-498a30b9f945/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a69b61-7061-4fd6-ae32-498a30b9f945/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d347897b483e2048bb7af7fe5bb03b68d0369bfa [2021-10-13 06:54:25,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:54:25,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:54:25,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:54:25,201 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:54:25,202 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:54:25,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a69b61-7061-4fd6-ae32-498a30b9f945/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/eca-rers2012/Problem02_label22.c [2021-10-13 06:54:25,289 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a69b61-7061-4fd6-ae32-498a30b9f945/bin/utaipan-q2qaUkNPG8/data/ee15324fd/a1551d21ad8b410db8ecfe5e7972e1e7/FLAG35351e06a [2021-10-13 06:54:25,991 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:54:25,992 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a69b61-7061-4fd6-ae32-498a30b9f945/sv-benchmarks/c/eca-rers2012/Problem02_label22.c [2021-10-13 06:54:26,023 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a69b61-7061-4fd6-ae32-498a30b9f945/bin/utaipan-q2qaUkNPG8/data/ee15324fd/a1551d21ad8b410db8ecfe5e7972e1e7/FLAG35351e06a [2021-10-13 06:54:26,240 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a69b61-7061-4fd6-ae32-498a30b9f945/bin/utaipan-q2qaUkNPG8/data/ee15324fd/a1551d21ad8b410db8ecfe5e7972e1e7 [2021-10-13 06:54:26,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:54:26,248 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:54:26,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:54:26,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:54:26,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:54:26,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:54:26" (1/1) ... [2021-10-13 06:54:26,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43253c0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:26, skipping insertion in model container [2021-10-13 06:54:26,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:54:26" (1/1) ... [2021-10-13 06:54:26,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:54:26,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:54:26,813 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_31a69b61-7061-4fd6-ae32-498a30b9f945/sv-benchmarks/c/eca-rers2012/Problem02_label22.c[16445,16458] [2021-10-13 06:54:26,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:54:26,855 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:54:26,976 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_31a69b61-7061-4fd6-ae32-498a30b9f945/sv-benchmarks/c/eca-rers2012/Problem02_label22.c[16445,16458] [2021-10-13 06:54:26,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:54:27,007 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:54:27,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:27 WrapperNode [2021-10-13 06:54:27,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:54:27,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:54:27,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:54:27,010 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:54:27,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:27" (1/1) ... [2021-10-13 06:54:27,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:27" (1/1) ... [2021-10-13 06:54:27,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:54:27,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:54:27,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:54:27,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:54:27,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:27" (1/1) ... [2021-10-13 06:54:27,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:27" (1/1) ... [2021-10-13 06:54:27,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:27" (1/1) ... [2021-10-13 06:54:27,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:27" (1/1) ... [2021-10-13 06:54:27,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:27" (1/1) ... [2021-10-13 06:54:27,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:27" (1/1) ... [2021-10-13 06:54:27,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:27" (1/1) ... [2021-10-13 06:54:27,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:54:27,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:54:27,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:54:27,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:54:27,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:27" (1/1) ... [2021-10-13 06:54:27,230 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:54:27,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a69b61-7061-4fd6-ae32-498a30b9f945/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:54:27,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a69b61-7061-4fd6-ae32-498a30b9f945/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:54:27,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a69b61-7061-4fd6-ae32-498a30b9f945/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:54:27,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 06:54:27,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:54:27,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:54:27,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:54:29,743 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:54:29,744 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 06:54:29,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:54:29 BoogieIcfgContainer [2021-10-13 06:54:29,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:54:29,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:54:29,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:54:29,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:54:29,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:54:26" (1/3) ... [2021-10-13 06:54:29,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7d7e96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:54:29, skipping insertion in model container [2021-10-13 06:54:29,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:27" (2/3) ... [2021-10-13 06:54:29,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7d7e96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:54:29, skipping insertion in model container [2021-10-13 06:54:29,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:54:29" (3/3) ... [2021-10-13 06:54:29,764 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label22.c [2021-10-13 06:54:29,771 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:54:29,771 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:54:29,842 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:54:29,854 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 [2021-10-13 06:54:29,854 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:54:29,878 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) [2021-10-13 06:54:29,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 06:54:29,898 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:54:29,899 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] [2021-10-13 06:54:29,900 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:54:29,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:54:29,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1243321523, now seen corresponding path program 1 times [2021-10-13 06:54:29,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:54:29,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465988790] [2021-10-13 06:54:29,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:54:29,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:54:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:54:30,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:54:30,404 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:54:30,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465988790] [2021-10-13 06:54:30,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465988790] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:54:30,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:54:30,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:54:30,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173031264] [2021-10-13 06:54:30,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:54:30,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:54:30,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:54:30,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:54:30,434 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) [2021-10-13 06:54:31,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:54:31,047 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-13 06:54:31,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:54:31,049 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 [2021-10-13 06:54:31,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:54:31,070 INFO L225 Difference]: With dead ends: 251 [2021-10-13 06:54:31,070 INFO L226 Difference]: Without dead ends: 163 [2021-10-13 06:54:31,076 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:54:31,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-13 06:54:31,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-13 06:54:31,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.5617283950617284) internal successors, (253), 162 states have internal predecessors, (253), 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) [2021-10-13 06:54:31,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 253 transitions. [2021-10-13 06:54:31,170 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 253 transitions. Word has length 80 [2021-10-13 06:54:31,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:54:31,172 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 253 transitions. [2021-10-13 06:54:31,172 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) [2021-10-13 06:54:31,173 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 253 transitions. [2021-10-13 06:54:31,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 06:54:31,180 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:54:31,181 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:54:31,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 06:54:31,182 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:54:31,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:54:31,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1692950408, now seen corresponding path program 1 times [2021-10-13 06:54:31,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:54:31,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699728134] [2021-10-13 06:54:31,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:54:31,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:54:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:54:31,382 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:54:31,383 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:54:31,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699728134] [2021-10-13 06:54:31,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699728134] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:54:31,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:54:31,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:54:31,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135075873] [2021-10-13 06:54:31,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:54:31,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:54:31,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:54:31,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:54:31,388 INFO L87 Difference]: Start difference. First operand 163 states and 253 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 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) [2021-10-13 06:54:31,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:54:31,838 INFO L93 Difference]: Finished difference Result 405 states and 661 transitions. [2021-10-13 06:54:31,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:54:31,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 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 85 [2021-10-13 06:54:31,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:54:31,842 INFO L225 Difference]: With dead ends: 405 [2021-10-13 06:54:31,842 INFO L226 Difference]: Without dead ends: 243 [2021-10-13 06:54:31,844 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:54:31,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-10-13 06:54:31,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2021-10-13 06:54:31,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.4793388429752066) internal successors, (358), 242 states have internal predecessors, (358), 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) [2021-10-13 06:54:31,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 358 transitions. [2021-10-13 06:54:31,859 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 358 transitions. Word has length 85 [2021-10-13 06:54:31,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:54:31,860 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 358 transitions. [2021-10-13 06:54:31,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 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) [2021-10-13 06:54:31,860 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 358 transitions. [2021-10-13 06:54:31,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 06:54:31,863 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:54:31,864 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:54:31,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 06:54:31,864 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:54:31,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:54:31,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1724802161, now seen corresponding path program 1 times [2021-10-13 06:54:31,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:54:31,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818096390] [2021-10-13 06:54:31,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:54:31,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:54:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:54:31,921 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:54:31,921 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:54:31,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818096390] [2021-10-13 06:54:31,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818096390] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:54:31,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:54:31,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:54:31,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103479875] [2021-10-13 06:54:31,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:54:31,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:54:31,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:54:31,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:54:31,925 INFO L87 Difference]: Start difference. First operand 243 states and 358 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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) [2021-10-13 06:54:32,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:54:32,368 INFO L93 Difference]: Finished difference Result 725 states and 1071 transitions. [2021-10-13 06:54:32,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:54:32,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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 [2021-10-13 06:54:32,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:54:32,373 INFO L225 Difference]: With dead ends: 725 [2021-10-13 06:54:32,373 INFO L226 Difference]: Without dead ends: 483 [2021-10-13 06:54:32,375 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 [2021-10-13 06:54:32,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-10-13 06:54:32,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2021-10-13 06:54:32,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.3983402489626555) internal successors, (674), 482 states have internal predecessors, (674), 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) [2021-10-13 06:54:32,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 674 transitions. [2021-10-13 06:54:32,415 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 674 transitions. Word has length 95 [2021-10-13 06:54:32,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:54:32,415 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 674 transitions. [2021-10-13 06:54:32,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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) [2021-10-13 06:54:32,415 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 674 transitions. [2021-10-13 06:54:32,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-13 06:54:32,420 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:54:32,420 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:54:32,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 06:54:32,421 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:54:32,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:54:32,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1929400592, now seen corresponding path program 1 times [2021-10-13 06:54:32,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:54:32,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840093904] [2021-10-13 06:54:32,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:54:32,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:54:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:54:32,536 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:54:32,536 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:54:32,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840093904] [2021-10-13 06:54:32,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840093904] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:54:32,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:54:32,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:54:32,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408261394] [2021-10-13 06:54:32,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:54:32,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:54:32,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:54:32,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:54:32,540 INFO L87 Difference]: Start difference. First operand 483 states and 674 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-10-13 06:54:32,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:54:32,946 INFO L93 Difference]: Finished difference Result 1125 states and 1634 transitions. [2021-10-13 06:54:32,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:54:32,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 110 [2021-10-13 06:54:32,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:54:32,953 INFO L225 Difference]: With dead ends: 1125 [2021-10-13 06:54:32,953 INFO L226 Difference]: Without dead ends: 643 [2021-10-13 06:54:32,959 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:54:32,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-10-13 06:54:32,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2021-10-13 06:54:32,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 1.4236760124610592) internal successors, (914), 642 states have internal predecessors, (914), 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) [2021-10-13 06:54:32,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 914 transitions. [2021-10-13 06:54:32,992 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 914 transitions. Word has length 110 [2021-10-13 06:54:32,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:54:32,993 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 914 transitions. [2021-10-13 06:54:32,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-10-13 06:54:32,993 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 914 transitions. [2021-10-13 06:54:32,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-13 06:54:32,996 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:54:32,997 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-13 06:54:32,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 06:54:32,997 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:54:32,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:54:32,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1997907039, now seen corresponding path program 1 times [2021-10-13 06:54:32,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:54:32,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870191100] [2021-10-13 06:54:32,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:54:33,000 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:54:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:54:33,085 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-13 06:54:33,086 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:54:33,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870191100] [2021-10-13 06:54:33,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870191100] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:54:33,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:54:33,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:54:33,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109499577] [2021-10-13 06:54:33,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:54:33,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:54:33,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:54:33,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:54:33,089 INFO L87 Difference]: Start difference. First operand 643 states and 914 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 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) [2021-10-13 06:54:33,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:54:33,317 INFO L93 Difference]: Finished difference Result 1285 states and 1827 transitions. [2021-10-13 06:54:33,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:54:33,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 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 113 [2021-10-13 06:54:33,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:54:33,323 INFO L225 Difference]: With dead ends: 1285 [2021-10-13 06:54:33,324 INFO L226 Difference]: Without dead ends: 643 [2021-10-13 06:54:33,325 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 [2021-10-13 06:54:33,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-10-13 06:54:33,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2021-10-13 06:54:33,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 1.3457943925233644) internal successors, (864), 642 states have internal predecessors, (864), 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) [2021-10-13 06:54:33,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 864 transitions. [2021-10-13 06:54:33,354 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 864 transitions. Word has length 113 [2021-10-13 06:54:33,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:54:33,355 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 864 transitions. [2021-10-13 06:54:33,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 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) [2021-10-13 06:54:33,355 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 864 transitions. [2021-10-13 06:54:33,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-13 06:54:33,359 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:54:33,359 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-13 06:54:33,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 06:54:33,360 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:54:33,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:54:33,360 INFO L82 PathProgramCache]: Analyzing trace with hash 342262358, now seen corresponding path program 1 times [2021-10-13 06:54:33,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:54:33,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765873061] [2021-10-13 06:54:33,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:54:33,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:54:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:54:33,418 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-13 06:54:33,418 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:54:33,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765873061] [2021-10-13 06:54:33,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765873061] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:54:33,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:54:33,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:54:33,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276323876] [2021-10-13 06:54:33,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:54:33,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:54:33,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:54:33,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:54:33,422 INFO L87 Difference]: Start difference. First operand 643 states and 864 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2021-10-13 06:54:33,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:54:33,743 INFO L93 Difference]: Finished difference Result 1765 states and 2332 transitions. [2021-10-13 06:54:33,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:54:33,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 117 [2021-10-13 06:54:33,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:54:33,752 INFO L225 Difference]: With dead ends: 1765 [2021-10-13 06:54:33,752 INFO L226 Difference]: Without dead ends: 1123 [2021-10-13 06:54:33,754 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 [2021-10-13 06:54:33,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2021-10-13 06:54:33,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 963. [2021-10-13 06:54:33,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.2983367983367984) internal successors, (1249), 962 states have internal predecessors, (1249), 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) [2021-10-13 06:54:33,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1249 transitions. [2021-10-13 06:54:33,790 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1249 transitions. Word has length 117 [2021-10-13 06:54:33,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:54:33,791 INFO L470 AbstractCegarLoop]: Abstraction has 963 states and 1249 transitions. [2021-10-13 06:54:33,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2021-10-13 06:54:33,791 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1249 transitions. [2021-10-13 06:54:33,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-10-13 06:54:33,795 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:54:33,795 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-13 06:54:33,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 06:54:33,796 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:54:33,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:54:33,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1523205858, now seen corresponding path program 1 times [2021-10-13 06:54:33,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:54:33,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931970370] [2021-10-13 06:54:33,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:54:33,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:54:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:54:33,850 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-13 06:54:33,850 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:54:33,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931970370] [2021-10-13 06:54:33,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931970370] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:54:33,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:54:33,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:54:33,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673455309] [2021-10-13 06:54:33,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:54:33,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:54:33,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:54:33,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:54:33,854 INFO L87 Difference]: Start difference. First operand 963 states and 1249 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-10-13 06:54:34,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:54:34,220 INFO L93 Difference]: Finished difference Result 2085 states and 2682 transitions. [2021-10-13 06:54:34,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:54:34,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 [2021-10-13 06:54:34,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:54:34,228 INFO L225 Difference]: With dead ends: 2085 [2021-10-13 06:54:34,228 INFO L226 Difference]: Without dead ends: 963 [2021-10-13 06:54:34,230 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:54:34,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-10-13 06:54:34,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 883. [2021-10-13 06:54:34,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.1473922902494331) internal successors, (1012), 882 states have internal predecessors, (1012), 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) [2021-10-13 06:54:34,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1012 transitions. [2021-10-13 06:54:34,261 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1012 transitions. Word has length 124 [2021-10-13 06:54:34,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:54:34,261 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1012 transitions. [2021-10-13 06:54:34,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-10-13 06:54:34,262 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1012 transitions. [2021-10-13 06:54:34,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-10-13 06:54:34,265 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:54:34,266 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-13 06:54:34,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 06:54:34,266 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:54:34,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:54:34,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1982700396, now seen corresponding path program 1 times [2021-10-13 06:54:34,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:54:34,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521884842] [2021-10-13 06:54:34,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:54:34,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:54:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:54:34,396 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-13 06:54:34,396 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:54:34,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521884842] [2021-10-13 06:54:34,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521884842] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 06:54:34,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159789834] [2021-10-13 06:54:34,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:54:34,399 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:54:34,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a69b61-7061-4fd6-ae32-498a30b9f945/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:54:34,410 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a69b61-7061-4fd6-ae32-498a30b9f945/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:54:34,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a69b61-7061-4fd6-ae32-498a30b9f945/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 06:54:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:54:34,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 06:54:34,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:54:35,238 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-10-13 06:54:35,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:54:35,647 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-10-13 06:54:35,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159789834] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:54:35,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 06:54:35,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [4] total 5 [2021-10-13 06:54:35,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572237560] [2021-10-13 06:54:35,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:54:35,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:54:35,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:54:35,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:54:35,651 INFO L87 Difference]: Start difference. First operand 883 states and 1012 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:54:35,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:54:35,988 INFO L93 Difference]: Finished difference Result 963 states and 1096 transitions. [2021-10-13 06:54:35,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:54:35,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-10-13 06:54:35,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:54:35,990 INFO L225 Difference]: With dead ends: 963 [2021-10-13 06:54:35,990 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 06:54:35,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 253 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:54:35,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 06:54:35,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 06:54:35,992 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) [2021-10-13 06:54:35,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 06:54:35,993 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 128 [2021-10-13 06:54:35,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:54:35,993 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 06:54:35,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:54:35,994 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 06:54:35,994 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 06:54:35,997 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:54:36,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a69b61-7061-4fd6-ae32-498a30b9f945/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 06:54:36,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a69b61-7061-4fd6-ae32-498a30b9f945/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:54:36,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 06:54:36,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:54:36,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:54:36,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:54:36,424 INFO L857 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-13 06:54:36,424 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-13 06:54:36,425 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-13 06:54:36,425 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-13 06:54:36,425 INFO L857 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-13 06:54:36,425 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-13 06:54:36,425 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-13 06:54:36,426 INFO L857 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-13 06:54:36,426 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-13 06:54:36,426 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-13 06:54:36,426 INFO L857 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-13 06:54:36,426 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-13 06:54:36,427 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-13 06:54:36,427 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-13 06:54:36,427 INFO L857 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-13 06:54:36,427 INFO L857 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-13 06:54:36,427 INFO L857 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-13 06:54:36,427 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-13 06:54:36,428 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-13 06:54:36,428 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-13 06:54:36,428 INFO L857 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-13 06:54:36,428 INFO L857 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-13 06:54:36,428 INFO L857 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-13 06:54:36,429 INFO L857 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-13 06:54:36,429 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-13 06:54:36,429 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-13 06:54:36,429 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 06:54:36,434 INFO L857 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-13 06:54:36,435 INFO L857 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-13 06:54:36,435 INFO L857 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-13 06:54:36,437 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-13 06:54:36,438 INFO L857 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-13 06:54:36,438 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-13 06:54:36,440 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-13 06:54:36,440 INFO L857 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-13 06:54:36,440 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-13 06:54:36,441 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 473) no Hoare annotation was computed. [2021-10-13 06:54:36,441 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-13 06:54:36,441 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-13 06:54:36,441 INFO L857 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-13 06:54:36,442 INFO L857 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-13 06:54:36,442 INFO L857 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-13 06:54:36,442 INFO L857 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-13 06:54:36,442 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-13 06:54:36,443 INFO L857 garLoopResultBuilder]: For program point L469-1(lines 39 608) no Hoare annotation was computed. [2021-10-13 06:54:36,443 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-13 06:54:36,443 INFO L857 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-13 06:54:36,443 INFO L857 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-13 06:54:36,444 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-13 06:54:36,444 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-13 06:54:36,444 INFO L857 garLoopResultBuilder]: For program point L472-1(lines 39 608) no Hoare annotation was computed. [2021-10-13 06:54:36,444 INFO L857 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-13 06:54:36,445 INFO L857 garLoopResultBuilder]: For program point L473(line 473) no Hoare annotation was computed. [2021-10-13 06:54:36,445 INFO L857 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-13 06:54:36,446 INFO L857 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-13 06:54:36,446 INFO L857 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-13 06:54:36,447 INFO L853 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse3 (= ~a19~0 1)) (.cse2 (<= ~a28~0 7)) (.cse0 (<= 8 ~a17~0)) (.cse1 (<= ~a17~0 8)) (.cse4 (<= ~a28~0 10))) (or (and .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3) (and .cse1 .cse3 .cse2) (and (<= 9 ~a28~0) .cse1 .cse4) (and .cse0 .cse1 .cse4 (not (= ~a25~0 1))))) [2021-10-13 06:54:36,448 INFO L857 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-13 06:54:36,448 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-13 06:54:36,448 INFO L860 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-13 06:54:36,449 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-13 06:54:36,453 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-13 06:54:36,453 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-13 06:54:36,454 INFO L857 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-13 06:54:36,454 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-13 06:54:36,454 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 06:54:36,454 INFO L857 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-13 06:54:36,455 INFO L857 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-13 06:54:36,455 INFO L853 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse3 (= ~a19~0 1)) (.cse2 (<= ~a28~0 7)) (.cse0 (<= 8 ~a17~0)) (.cse1 (<= ~a17~0 8)) (.cse4 (<= ~a28~0 10))) (or (and .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3) (and .cse1 .cse3 .cse2) (and (<= 9 ~a28~0) .cse1 .cse4) (and .cse0 .cse1 .cse4 (not (= ~a25~0 1))))) [2021-10-13 06:54:36,455 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-13 06:54:36,455 INFO L857 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-13 06:54:36,456 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-13 06:54:36,456 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-13 06:54:36,456 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-13 06:54:36,456 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-13 06:54:36,457 INFO L857 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-13 06:54:36,457 INFO L857 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-13 06:54:36,457 INFO L857 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-13 06:54:36,457 INFO L857 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-13 06:54:36,458 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-13 06:54:36,458 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-13 06:54:36,458 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-13 06:54:36,458 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-13 06:54:36,459 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-13 06:54:36,459 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-13 06:54:36,464 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:54:36,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:54:36 BoogieIcfgContainer [2021-10-13 06:54:36,503 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:54:36,504 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:54:36,504 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:54:36,505 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:54:36,505 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:54:29" (3/4) ... [2021-10-13 06:54:36,508 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 06:54:36,550 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2021-10-13 06:54:36,553 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-13 06:54:36,555 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-13 06:54:36,557 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 06:54:36,771 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a69b61-7061-4fd6-ae32-498a30b9f945/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 06:54:36,771 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:54:36,773 INFO L168 Benchmark]: Toolchain (without parser) took 10524.02 ms. Allocated memory was 100.7 MB in the beginning and 207.6 MB in the end (delta: 107.0 MB). Free memory was 68.3 MB in the beginning and 124.6 MB in the end (delta: -56.3 MB). Peak memory consumption was 50.9 MB. Max. memory is 16.1 GB. [2021-10-13 06:54:36,774 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 100.7 MB. Free memory is still 57.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:54:36,775 INFO L168 Benchmark]: CACSL2BoogieTranslator took 755.26 ms. Allocated memory is still 100.7 MB. Free memory was 68.1 MB in the beginning and 59.7 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 06:54:36,775 INFO L168 Benchmark]: Boogie Procedure Inliner took 110.13 ms. Allocated memory is still 100.7 MB. Free memory was 59.7 MB in the beginning and 54.1 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 06:54:36,776 INFO L168 Benchmark]: Boogie Preprocessor took 98.17 ms. Allocated memory is still 100.7 MB. Free memory was 54.1 MB in the beginning and 49.8 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 06:54:36,777 INFO L168 Benchmark]: RCFGBuilder took 2529.39 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 49.8 MB in the beginning and 74.5 MB in the end (delta: -24.6 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.1 GB. [2021-10-13 06:54:36,777 INFO L168 Benchmark]: TraceAbstraction took 6748.59 ms. Allocated memory was 127.9 MB in the beginning and 207.6 MB in the end (delta: 79.7 MB). Free memory was 74.5 MB in the beginning and 140.3 MB in the end (delta: -65.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2021-10-13 06:54:36,778 INFO L168 Benchmark]: Witness Printer took 267.79 ms. Allocated memory is still 207.6 MB. Free memory was 140.3 MB in the beginning and 124.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 06:54:36,780 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 100.7 MB. Free memory is still 57.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 755.26 ms. Allocated memory is still 100.7 MB. Free memory was 68.1 MB in the beginning and 59.7 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 110.13 ms. Allocated memory is still 100.7 MB. Free memory was 59.7 MB in the beginning and 54.1 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 98.17 ms. Allocated memory is still 100.7 MB. Free memory was 54.1 MB in the beginning and 49.8 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2529.39 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 49.8 MB in the beginning and 74.5 MB in the end (delta: -24.6 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6748.59 ms. Allocated memory was 127.9 MB in the beginning and 207.6 MB in the end (delta: 79.7 MB). Free memory was 74.5 MB in the beginning and 140.3 MB in the end (delta: -65.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. * Witness Printer took 267.79 ms. Allocated memory is still 207.6 MB. Free memory was 140.3 MB in the beginning and 124.6 MB in the end (delta: 15.7 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: 473]: 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: 6623.8ms, OverallIterations: 8, TraceHistogramMax: 4, EmptinessCheckTime: 53.6ms, AutomataDifference: 3275.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 224.7ms, InitialAbstractionConstructionTime: 18.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 431 SDtfs, 429 SDslu, 36 SDs, 0 SdLazy, 1679 SolverSat, 486 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2172.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 276 GetRequests, 264 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=963occurred in iteration=6, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 259.2ms AutomataMinimizationTime, 8 MinimizatonAttempts, 240 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 33 NumberOfFragments, 111 HoareAnnotationTreeSize, 3 FomulaSimplifications, 404 FormulaSimplificationTreeSizeReduction, 51.8ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 50 FormulaSimplificationTreeSizeReductionInter, 163.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 94.8ms SsaConstructionTime, 354.8ms SatisfiabilityAnalysisTime, 1775.8ms InterpolantComputationTime, 980 NumberOfCodeBlocks, 980 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1098 ConstructedInterpolants, 0 QuantifiedInterpolants, 2696 SizeOfPredicates, 0 NumberOfNonLiveVariables, 303 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 442/450 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: (((((8 <= a17 && a17 <= 8) && a28 <= 7) || ((8 <= a17 && a17 <= 8) && a19 == 1)) || ((a17 <= 8 && a19 == 1) && a28 <= 7)) || ((9 <= a28 && a17 <= 8) && a28 <= 10)) || (((8 <= a17 && a17 <= 8) && a28 <= 10) && !(a25 == 1)) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((8 <= a17 && a17 <= 8) && a28 <= 7) || ((8 <= a17 && a17 <= 8) && a19 == 1)) || ((a17 <= 8 && a19 == 1) && a28 <= 7)) || ((9 <= a28 && a17 <= 8) && a28 <= 10)) || (((8 <= a17 && a17 <= 8) && a28 <= 10) && !(a25 == 1)) RESULT: Ultimate proved your program to be correct! [2021-10-13 06:54:36,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a69b61-7061-4fd6-ae32-498a30b9f945/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...