./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label06.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_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/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_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/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_313ae6c6-a764-4e07-9e31-18bfa2f0304c/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 ebd8043c569a2735186138bd410041c177d4512b .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 06:48:25,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:48:25,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:48:25,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:48:25,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:48:25,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:48:25,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:48:25,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:48:25,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:48:25,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:48:25,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:48:25,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:48:25,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:48:25,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:48:25,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:48:25,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:48:25,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:48:25,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:48:25,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:48:25,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:48:25,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:48:25,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:48:25,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:48:25,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:48:25,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:48:25,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:48:25,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:48:25,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:48:25,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:48:25,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:48:25,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:48:25,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:48:25,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:48:25,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:48:25,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:48:25,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:48:25,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:48:25,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:48:25,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:48:25,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:48:25,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:48:25,888 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 06:48:25,931 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:48:25,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:48:25,937 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:48:25,937 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:48:25,938 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:48:25,938 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:48:25,938 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 06:48:25,938 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:48:25,944 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:48:25,945 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 06:48:25,946 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 06:48:25,946 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:48:25,946 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 06:48:25,947 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 06:48:25,947 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 06:48:25,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:48:25,948 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:48:25,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:48:25,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:48:25,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:48:25,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:48:25,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:48:25,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:48:25,949 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:48:25,950 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:48:25,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:48:25,950 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:48:25,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:48:25,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:48:25,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:48:25,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:48:25,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:48:25,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:48:25,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:48:25,954 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 06:48:25,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 06:48:25,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:48:25,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:48:25,954 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:48:25,955 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_313ae6c6-a764-4e07-9e31-18bfa2f0304c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebd8043c569a2735186138bd410041c177d4512b [2021-10-13 06:48:26,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:48:26,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:48:26,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:48:26,245 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:48:26,246 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:48:26,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/eca-rers2012/Problem03_label06.c [2021-10-13 06:48:26,332 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/data/bfd91fbf9/ab66df49c9ef4b51be5fa12586a75dd3/FLAG195af1136 [2021-10-13 06:48:27,004 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:48:27,007 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/sv-benchmarks/c/eca-rers2012/Problem03_label06.c [2021-10-13 06:48:27,031 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/data/bfd91fbf9/ab66df49c9ef4b51be5fa12586a75dd3/FLAG195af1136 [2021-10-13 06:48:27,177 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/data/bfd91fbf9/ab66df49c9ef4b51be5fa12586a75dd3 [2021-10-13 06:48:27,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:48:27,181 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:48:27,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:48:27,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:48:27,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:48:27,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:48:27" (1/1) ... [2021-10-13 06:48:27,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@762613d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:27, skipping insertion in model container [2021-10-13 06:48:27,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:48:27" (1/1) ... [2021-10-13 06:48:27,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:48:27,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:48:27,956 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_313ae6c6-a764-4e07-9e31-18bfa2f0304c/sv-benchmarks/c/eca-rers2012/Problem03_label06.c[57034,57047] [2021-10-13 06:48:27,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:48:27,999 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:48:28,241 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_313ae6c6-a764-4e07-9e31-18bfa2f0304c/sv-benchmarks/c/eca-rers2012/Problem03_label06.c[57034,57047] [2021-10-13 06:48:28,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:48:28,275 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:48:28,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:28 WrapperNode [2021-10-13 06:48:28,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:48:28,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:48:28,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:48:28,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:48:28,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:28" (1/1) ... [2021-10-13 06:48:28,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:28" (1/1) ... [2021-10-13 06:48:28,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:48:28,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:48:28,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:48:28,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:48:28,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:28" (1/1) ... [2021-10-13 06:48:28,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:28" (1/1) ... [2021-10-13 06:48:28,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:28" (1/1) ... [2021-10-13 06:48:28,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:28" (1/1) ... [2021-10-13 06:48:28,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:28" (1/1) ... [2021-10-13 06:48:28,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:28" (1/1) ... [2021-10-13 06:48:28,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:28" (1/1) ... [2021-10-13 06:48:28,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:48:28,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:48:28,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:48:28,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:48:28,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:28" (1/1) ... [2021-10-13 06:48:28,577 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:48:28,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:48:28,607 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:48:28,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:48:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 06:48:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:48:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:48:28,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:48:31,524 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:48:31,524 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 06:48:31,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:48:31 BoogieIcfgContainer [2021-10-13 06:48:31,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:48:31,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:48:31,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:48:31,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:48:31,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:48:27" (1/3) ... [2021-10-13 06:48:31,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598544f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:48:31, skipping insertion in model container [2021-10-13 06:48:31,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:48:28" (2/3) ... [2021-10-13 06:48:31,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598544f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:48:31, skipping insertion in model container [2021-10-13 06:48:31,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:48:31" (3/3) ... [2021-10-13 06:48:31,539 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label06.c [2021-10-13 06:48:31,547 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:48:31,548 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:48:31,610 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:48:31,618 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 06:48:31,618 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:48:31,641 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 146 states have (on average 1.9726027397260273) internal successors, (288), 147 states have internal predecessors, (288), 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 06:48:31,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-10-13 06:48:31,659 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:48:31,660 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:31,661 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:48:31,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:48:31,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1724862984, now seen corresponding path program 1 times [2021-10-13 06:48:31,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:48:31,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126963338] [2021-10-13 06:48:31,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:48:31,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:48:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:48:32,238 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 06:48:32,239 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:48:32,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126963338] [2021-10-13 06:48:32,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126963338] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:48:32,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:48:32,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:48:32,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539395610] [2021-10-13 06:48:32,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:48:32,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:48:32,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:48:32,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:48:32,270 INFO L87 Difference]: Start difference. First operand has 148 states, 146 states have (on average 1.9726027397260273) internal successors, (288), 147 states have internal predecessors, (288), 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 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 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 06:48:33,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:48:33,225 INFO L93 Difference]: Finished difference Result 440 states and 860 transitions. [2021-10-13 06:48:33,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:48:33,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 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 143 [2021-10-13 06:48:33,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:48:33,248 INFO L225 Difference]: With dead ends: 440 [2021-10-13 06:48:33,249 INFO L226 Difference]: Without dead ends: 289 [2021-10-13 06:48:33,255 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:48:33,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-10-13 06:48:33,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2021-10-13 06:48:33,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.9270833333333333) internal successors, (555), 288 states have internal predecessors, (555), 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 06:48:33,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 555 transitions. [2021-10-13 06:48:33,343 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 555 transitions. Word has length 143 [2021-10-13 06:48:33,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:48:33,344 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 555 transitions. [2021-10-13 06:48:33,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 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 06:48:33,344 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 555 transitions. [2021-10-13 06:48:33,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-10-13 06:48:33,347 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:48:33,348 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:33,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 06:48:33,348 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:48:33,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:48:33,349 INFO L82 PathProgramCache]: Analyzing trace with hash -2023696148, now seen corresponding path program 1 times [2021-10-13 06:48:33,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:48:33,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534321647] [2021-10-13 06:48:33,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:48:33,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:48:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:48:33,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:48:33,467 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:48:33,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534321647] [2021-10-13 06:48:33,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534321647] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:48:33,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:48:33,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:48:33,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186995485] [2021-10-13 06:48:33,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:48:33,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:48:33,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:48:33,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:48:33,475 INFO L87 Difference]: Start difference. First operand 289 states and 555 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 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 06:48:34,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:48:34,220 INFO L93 Difference]: Finished difference Result 865 states and 1663 transitions. [2021-10-13 06:48:34,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:48:34,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 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 147 [2021-10-13 06:48:34,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:48:34,231 INFO L225 Difference]: With dead ends: 865 [2021-10-13 06:48:34,231 INFO L226 Difference]: Without dead ends: 577 [2021-10-13 06:48:34,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:48:34,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-10-13 06:48:34,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 575. [2021-10-13 06:48:34,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 1.8954703832752613) internal successors, (1088), 574 states have internal predecessors, (1088), 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 06:48:34,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1088 transitions. [2021-10-13 06:48:34,268 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1088 transitions. Word has length 147 [2021-10-13 06:48:34,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:48:34,269 INFO L470 AbstractCegarLoop]: Abstraction has 575 states and 1088 transitions. [2021-10-13 06:48:34,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 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 06:48:34,269 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1088 transitions. [2021-10-13 06:48:34,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-10-13 06:48:34,276 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:48:34,276 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:34,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 06:48:34,277 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:48:34,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:48:34,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1067666524, now seen corresponding path program 1 times [2021-10-13 06:48:34,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:48:34,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396043015] [2021-10-13 06:48:34,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:48:34,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:48:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:48:34,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:48:34,351 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:48:34,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396043015] [2021-10-13 06:48:34,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396043015] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:48:34,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:48:34,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:48:34,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697330693] [2021-10-13 06:48:34,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:48:34,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:48:34,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:48:34,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:48:34,357 INFO L87 Difference]: Start difference. First operand 575 states and 1088 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:48:35,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:48:35,088 INFO L93 Difference]: Finished difference Result 1721 states and 3261 transitions. [2021-10-13 06:48:35,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:48:35,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-10-13 06:48:35,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:48:35,097 INFO L225 Difference]: With dead ends: 1721 [2021-10-13 06:48:35,097 INFO L226 Difference]: Without dead ends: 1147 [2021-10-13 06:48:35,098 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:48:35,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2021-10-13 06:48:35,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 861. [2021-10-13 06:48:35,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 860 states have (on average 1.6732558139534883) internal successors, (1439), 860 states have internal predecessors, (1439), 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 06:48:35,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1439 transitions. [2021-10-13 06:48:35,130 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1439 transitions. Word has length 149 [2021-10-13 06:48:35,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:48:35,130 INFO L470 AbstractCegarLoop]: Abstraction has 861 states and 1439 transitions. [2021-10-13 06:48:35,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:48:35,131 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1439 transitions. [2021-10-13 06:48:35,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-10-13 06:48:35,135 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:48:35,135 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:35,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 06:48:35,136 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:48:35,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:48:35,137 INFO L82 PathProgramCache]: Analyzing trace with hash -39402229, now seen corresponding path program 1 times [2021-10-13 06:48:35,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:48:35,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200993417] [2021-10-13 06:48:35,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:48:35,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:48:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:48:35,233 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 06:48:35,233 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:48:35,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200993417] [2021-10-13 06:48:35,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200993417] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:48:35,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:48:35,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:48:35,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304119199] [2021-10-13 06:48:35,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:48:35,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:48:35,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:48:35,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:48:35,239 INFO L87 Difference]: Start difference. First operand 861 states and 1439 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 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 06:48:35,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:48:35,980 INFO L93 Difference]: Finished difference Result 2579 states and 4314 transitions. [2021-10-13 06:48:35,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:48:35,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 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 155 [2021-10-13 06:48:35,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:48:35,991 INFO L225 Difference]: With dead ends: 2579 [2021-10-13 06:48:35,992 INFO L226 Difference]: Without dead ends: 1719 [2021-10-13 06:48:35,994 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:48:35,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2021-10-13 06:48:36,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1719. [2021-10-13 06:48:36,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1718 states have (on average 1.632130384167637) internal successors, (2804), 1718 states have internal predecessors, (2804), 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 06:48:36,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2804 transitions. [2021-10-13 06:48:36,067 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2804 transitions. Word has length 155 [2021-10-13 06:48:36,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:48:36,068 INFO L470 AbstractCegarLoop]: Abstraction has 1719 states and 2804 transitions. [2021-10-13 06:48:36,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 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 06:48:36,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2804 transitions. [2021-10-13 06:48:36,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-10-13 06:48:36,075 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:48:36,075 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:36,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 06:48:36,075 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:48:36,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:48:36,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1951304490, now seen corresponding path program 1 times [2021-10-13 06:48:36,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:48:36,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804382899] [2021-10-13 06:48:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:48:36,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:48:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:48:36,200 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 06:48:36,201 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:48:36,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804382899] [2021-10-13 06:48:36,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804382899] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:48:36,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:48:36,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:48:36,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644533323] [2021-10-13 06:48:36,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:48:36,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:48:36,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:48:36,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:48:36,204 INFO L87 Difference]: Start difference. First operand 1719 states and 2804 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 06:48:36,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:48:36,965 INFO L93 Difference]: Finished difference Result 4295 states and 6972 transitions. [2021-10-13 06:48:36,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:48:36,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 171 [2021-10-13 06:48:36,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:48:36,982 INFO L225 Difference]: With dead ends: 4295 [2021-10-13 06:48:36,982 INFO L226 Difference]: Without dead ends: 2577 [2021-10-13 06:48:36,985 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:48:36,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2577 states. [2021-10-13 06:48:37,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2577 to 2577. [2021-10-13 06:48:37,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2577 states, 2576 states have (on average 1.5260093167701863) internal successors, (3931), 2576 states have internal predecessors, (3931), 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 06:48:37,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2577 states to 2577 states and 3931 transitions. [2021-10-13 06:48:37,075 INFO L78 Accepts]: Start accepts. Automaton has 2577 states and 3931 transitions. Word has length 171 [2021-10-13 06:48:37,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:48:37,076 INFO L470 AbstractCegarLoop]: Abstraction has 2577 states and 3931 transitions. [2021-10-13 06:48:37,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 06:48:37,077 INFO L276 IsEmpty]: Start isEmpty. Operand 2577 states and 3931 transitions. [2021-10-13 06:48:37,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-10-13 06:48:37,086 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:48:37,087 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:37,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 06:48:37,087 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:48:37,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:48:37,088 INFO L82 PathProgramCache]: Analyzing trace with hash 913289979, now seen corresponding path program 1 times [2021-10-13 06:48:37,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:48:37,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774854479] [2021-10-13 06:48:37,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:48:37,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:48:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:48:37,235 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-13 06:48:37,238 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:48:37,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774854479] [2021-10-13 06:48:37,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774854479] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:48:37,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:48:37,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:48:37,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737779077] [2021-10-13 06:48:37,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:48:37,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:48:37,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:48:37,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:48:37,248 INFO L87 Difference]: Start difference. First operand 2577 states and 3931 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 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 06:48:37,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:48:37,667 INFO L93 Difference]: Finished difference Result 5153 states and 7861 transitions. [2021-10-13 06:48:37,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:48:37,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 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 176 [2021-10-13 06:48:37,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:48:37,685 INFO L225 Difference]: With dead ends: 5153 [2021-10-13 06:48:37,685 INFO L226 Difference]: Without dead ends: 2577 [2021-10-13 06:48:37,689 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:48:37,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2577 states. [2021-10-13 06:48:37,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2577 to 2577. [2021-10-13 06:48:37,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2577 states, 2576 states have (on average 1.4739906832298137) internal successors, (3797), 2576 states have internal predecessors, (3797), 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 06:48:37,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2577 states to 2577 states and 3797 transitions. [2021-10-13 06:48:37,775 INFO L78 Accepts]: Start accepts. Automaton has 2577 states and 3797 transitions. Word has length 176 [2021-10-13 06:48:37,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:48:37,777 INFO L470 AbstractCegarLoop]: Abstraction has 2577 states and 3797 transitions. [2021-10-13 06:48:37,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 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 06:48:37,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2577 states and 3797 transitions. [2021-10-13 06:48:37,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-10-13 06:48:37,785 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:48:37,786 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:37,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 06:48:37,786 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:48:37,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:48:37,787 INFO L82 PathProgramCache]: Analyzing trace with hash -2134477243, now seen corresponding path program 1 times [2021-10-13 06:48:37,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:48:37,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634751265] [2021-10-13 06:48:37,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:48:37,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:48:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:48:37,897 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 06:48:37,897 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:48:37,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634751265] [2021-10-13 06:48:37,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634751265] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:48:37,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:48:37,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:48:37,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950088215] [2021-10-13 06:48:37,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:48:37,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:48:37,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:48:37,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:48:37,900 INFO L87 Difference]: Start difference. First operand 2577 states and 3797 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 06:48:38,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:48:38,673 INFO L93 Difference]: Finished difference Result 6869 states and 10403 transitions. [2021-10-13 06:48:38,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:48:38,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 184 [2021-10-13 06:48:38,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:48:38,701 INFO L225 Difference]: With dead ends: 6869 [2021-10-13 06:48:38,701 INFO L226 Difference]: Without dead ends: 4293 [2021-10-13 06:48:38,706 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:48:38,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4293 states. [2021-10-13 06:48:38,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4293 to 3721. [2021-10-13 06:48:38,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3721 states, 3720 states have (on average 1.375) internal successors, (5115), 3720 states have internal predecessors, (5115), 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 06:48:38,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3721 states to 3721 states and 5115 transitions. [2021-10-13 06:48:38,831 INFO L78 Accepts]: Start accepts. Automaton has 3721 states and 5115 transitions. Word has length 184 [2021-10-13 06:48:38,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:48:38,833 INFO L470 AbstractCegarLoop]: Abstraction has 3721 states and 5115 transitions. [2021-10-13 06:48:38,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 06:48:38,833 INFO L276 IsEmpty]: Start isEmpty. Operand 3721 states and 5115 transitions. [2021-10-13 06:48:38,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-10-13 06:48:38,840 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:48:38,841 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:38,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 06:48:38,841 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:48:38,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:48:38,842 INFO L82 PathProgramCache]: Analyzing trace with hash 921527869, now seen corresponding path program 1 times [2021-10-13 06:48:38,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:48:38,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614332626] [2021-10-13 06:48:38,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:48:38,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:48:38,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:48:39,123 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 73 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-13 06:48:39,123 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:48:39,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614332626] [2021-10-13 06:48:39,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614332626] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 06:48:39,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065152393] [2021-10-13 06:48:39,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:48:39,125 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:48:39,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:48:39,131 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:48:39,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 06:48:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:48:39,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 06:48:39,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:48:40,122 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-10-13 06:48:40,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:48:40,750 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-10-13 06:48:40,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065152393] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:48:40,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 06:48:40,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-13 06:48:40,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040777611] [2021-10-13 06:48:40,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:48:40,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:48:40,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:48:40,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:48:40,753 INFO L87 Difference]: Start difference. First operand 3721 states and 5115 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 06:48:41,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:48:41,571 INFO L93 Difference]: Finished difference Result 10158 states and 13880 transitions. [2021-10-13 06:48:41,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:48:41,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 211 [2021-10-13 06:48:41,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:48:41,611 INFO L225 Difference]: With dead ends: 10158 [2021-10-13 06:48:41,611 INFO L226 Difference]: Without dead ends: 6438 [2021-10-13 06:48:41,616 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 419 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 72.2ms TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:48:41,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6438 states. [2021-10-13 06:48:41,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6438 to 6009. [2021-10-13 06:48:41,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6009 states, 6008 states have (on average 1.3392143808255659) internal successors, (8046), 6008 states have internal predecessors, (8046), 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 06:48:41,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6009 states to 6009 states and 8046 transitions. [2021-10-13 06:48:41,835 INFO L78 Accepts]: Start accepts. Automaton has 6009 states and 8046 transitions. Word has length 211 [2021-10-13 06:48:41,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:48:41,836 INFO L470 AbstractCegarLoop]: Abstraction has 6009 states and 8046 transitions. [2021-10-13 06:48:41,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 06:48:41,836 INFO L276 IsEmpty]: Start isEmpty. Operand 6009 states and 8046 transitions. [2021-10-13 06:48:41,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-10-13 06:48:41,848 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:48:41,848 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:48:41,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 06:48:42,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:48:42,068 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:48:42,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:48:42,068 INFO L82 PathProgramCache]: Analyzing trace with hash -886836469, now seen corresponding path program 1 times [2021-10-13 06:48:42,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:48:42,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323403555] [2021-10-13 06:48:42,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:48:42,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:48:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:48:42,194 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:48:42,195 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:48:42,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323403555] [2021-10-13 06:48:42,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323403555] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:48:42,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:48:42,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:48:42,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126930169] [2021-10-13 06:48:42,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:48:42,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:48:42,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:48:42,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:48:42,200 INFO L87 Difference]: Start difference. First operand 6009 states and 8046 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 06:48:42,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:48:42,978 INFO L93 Difference]: Finished difference Result 15163 states and 20388 transitions. [2021-10-13 06:48:42,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:48:42,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 248 [2021-10-13 06:48:42,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:48:43,038 INFO L225 Difference]: With dead ends: 15163 [2021-10-13 06:48:43,038 INFO L226 Difference]: Without dead ends: 9155 [2021-10-13 06:48:43,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:48:43,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9155 states. [2021-10-13 06:48:43,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9155 to 8726. [2021-10-13 06:48:43,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8726 states, 8725 states have (on average 1.3230945558739255) internal successors, (11544), 8725 states have internal predecessors, (11544), 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 06:48:43,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8726 states to 8726 states and 11544 transitions. [2021-10-13 06:48:43,347 INFO L78 Accepts]: Start accepts. Automaton has 8726 states and 11544 transitions. Word has length 248 [2021-10-13 06:48:43,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:48:43,348 INFO L470 AbstractCegarLoop]: Abstraction has 8726 states and 11544 transitions. [2021-10-13 06:48:43,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 06:48:43,349 INFO L276 IsEmpty]: Start isEmpty. Operand 8726 states and 11544 transitions. [2021-10-13 06:48:43,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-10-13 06:48:43,367 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:48:43,367 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 06:48:43,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 06:48:43,368 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:48:43,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:48:43,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1036099424, now seen corresponding path program 1 times [2021-10-13 06:48:43,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:48:43,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79207299] [2021-10-13 06:48:43,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:48:43,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:48:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:48:43,558 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:48:43,558 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:48:43,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79207299] [2021-10-13 06:48:43,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79207299] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:48:43,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:48:43,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:48:43,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659064364] [2021-10-13 06:48:43,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:48:43,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:48:43,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:48:43,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:48:43,565 INFO L87 Difference]: Start difference. First operand 8726 states and 11544 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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 06:48:44,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:48:44,394 INFO L93 Difference]: Finished difference Result 19024 states and 25146 transitions. [2021-10-13 06:48:44,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:48:44,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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 294 [2021-10-13 06:48:44,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:48:44,415 INFO L225 Difference]: With dead ends: 19024 [2021-10-13 06:48:44,415 INFO L226 Difference]: Without dead ends: 10299 [2021-10-13 06:48:44,426 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:48:44,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10299 states. [2021-10-13 06:48:44,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10299 to 10013. [2021-10-13 06:48:44,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10013 states, 10012 states have (on average 1.2786656012784658) internal successors, (12802), 10012 states have internal predecessors, (12802), 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 06:48:44,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10013 states to 10013 states and 12802 transitions. [2021-10-13 06:48:44,657 INFO L78 Accepts]: Start accepts. Automaton has 10013 states and 12802 transitions. Word has length 294 [2021-10-13 06:48:44,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:48:44,657 INFO L470 AbstractCegarLoop]: Abstraction has 10013 states and 12802 transitions. [2021-10-13 06:48:44,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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 06:48:44,658 INFO L276 IsEmpty]: Start isEmpty. Operand 10013 states and 12802 transitions. [2021-10-13 06:48:44,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-10-13 06:48:44,679 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:48:44,679 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:44,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 06:48:44,680 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:48:44,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:48:44,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1837962348, now seen corresponding path program 1 times [2021-10-13 06:48:44,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:48:44,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796548854] [2021-10-13 06:48:44,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:48:44,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:48:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:48:44,913 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 157 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-10-13 06:48:44,913 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:48:44,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796548854] [2021-10-13 06:48:44,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796548854] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 06:48:44,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802697945] [2021-10-13 06:48:44,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:48:44,914 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:48:44,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:48:44,922 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:48:44,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 06:48:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:48:45,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 06:48:45,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:48:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-10-13 06:48:45,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:48:46,546 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-10-13 06:48:46,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802697945] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:48:46,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 06:48:46,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-13 06:48:46,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946938608] [2021-10-13 06:48:46,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:48:46,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:48:46,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:48:46,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:48:46,549 INFO L87 Difference]: Start difference. First operand 10013 states and 12802 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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 06:48:47,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:48:47,337 INFO L93 Difference]: Finished difference Result 25173 states and 32232 transitions. [2021-10-13 06:48:47,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:48:47,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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 298 [2021-10-13 06:48:47,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:48:47,366 INFO L225 Difference]: With dead ends: 25173 [2021-10-13 06:48:47,367 INFO L226 Difference]: Without dead ends: 15161 [2021-10-13 06:48:47,378 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 593 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.0ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:48:47,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15161 states. [2021-10-13 06:48:47,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15161 to 14160. [2021-10-13 06:48:47,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14160 states, 14159 states have (on average 1.250158909527509) internal successors, (17701), 14159 states have internal predecessors, (17701), 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 06:48:47,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14160 states to 14160 states and 17701 transitions. [2021-10-13 06:48:47,654 INFO L78 Accepts]: Start accepts. Automaton has 14160 states and 17701 transitions. Word has length 298 [2021-10-13 06:48:47,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:48:47,655 INFO L470 AbstractCegarLoop]: Abstraction has 14160 states and 17701 transitions. [2021-10-13 06:48:47,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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 06:48:47,655 INFO L276 IsEmpty]: Start isEmpty. Operand 14160 states and 17701 transitions. [2021-10-13 06:48:47,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-10-13 06:48:47,681 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:48:47,684 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:47,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 06:48:47,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-13 06:48:47,898 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:48:47,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:48:47,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1377325353, now seen corresponding path program 1 times [2021-10-13 06:48:47,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:48:47,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27884196] [2021-10-13 06:48:47,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:48:47,899 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:48:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:48:48,112 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-10-13 06:48:48,113 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:48:48,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27884196] [2021-10-13 06:48:48,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27884196] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:48:48,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:48:48,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:48:48,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011142977] [2021-10-13 06:48:48,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:48:48,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:48:48,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:48:48,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:48:48,116 INFO L87 Difference]: Start difference. First operand 14160 states and 17701 transitions. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 3 states have internal predecessors, (229), 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 06:48:49,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:48:49,229 INFO L93 Difference]: Finished difference Result 28319 states and 35432 transitions. [2021-10-13 06:48:49,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:48:49,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 3 states have internal predecessors, (229), 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 302 [2021-10-13 06:48:49,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:48:49,255 INFO L225 Difference]: With dead ends: 28319 [2021-10-13 06:48:49,256 INFO L226 Difference]: Without dead ends: 14446 [2021-10-13 06:48:49,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:48:49,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14446 states. [2021-10-13 06:48:49,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14446 to 14160. [2021-10-13 06:48:49,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14160 states, 14159 states have (on average 1.250158909527509) internal successors, (17701), 14159 states have internal predecessors, (17701), 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 06:48:49,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14160 states to 14160 states and 17701 transitions. [2021-10-13 06:48:49,647 INFO L78 Accepts]: Start accepts. Automaton has 14160 states and 17701 transitions. Word has length 302 [2021-10-13 06:48:49,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:48:49,647 INFO L470 AbstractCegarLoop]: Abstraction has 14160 states and 17701 transitions. [2021-10-13 06:48:49,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 3 states have internal predecessors, (229), 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 06:48:49,648 INFO L276 IsEmpty]: Start isEmpty. Operand 14160 states and 17701 transitions. [2021-10-13 06:48:49,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2021-10-13 06:48:49,674 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:48:49,675 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:48:49,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 06:48:49,675 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:48:49,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:48:49,676 INFO L82 PathProgramCache]: Analyzing trace with hash -2115518884, now seen corresponding path program 1 times [2021-10-13 06:48:49,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:48:49,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580149546] [2021-10-13 06:48:49,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:48:49,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:48:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:48:49,830 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-10-13 06:48:49,831 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:48:49,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580149546] [2021-10-13 06:48:49,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580149546] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:48:49,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:48:49,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:48:49,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831205616] [2021-10-13 06:48:49,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:48:49,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:48:49,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:48:49,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:48:49,834 INFO L87 Difference]: Start difference. First operand 14160 states and 17701 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 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 06:48:50,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:48:50,674 INFO L93 Difference]: Finished difference Result 29177 states and 36327 transitions. [2021-10-13 06:48:50,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:48:50,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 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 303 [2021-10-13 06:48:50,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:48:50,700 INFO L225 Difference]: With dead ends: 29177 [2021-10-13 06:48:50,700 INFO L226 Difference]: Without dead ends: 15304 [2021-10-13 06:48:50,712 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:48:50,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15304 states. [2021-10-13 06:48:50,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15304 to 15161. [2021-10-13 06:48:50,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15161 states, 15160 states have (on average 1.2281002638522427) internal successors, (18618), 15160 states have internal predecessors, (18618), 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 06:48:51,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15161 states to 15161 states and 18618 transitions. [2021-10-13 06:48:51,081 INFO L78 Accepts]: Start accepts. Automaton has 15161 states and 18618 transitions. Word has length 303 [2021-10-13 06:48:51,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:48:51,081 INFO L470 AbstractCegarLoop]: Abstraction has 15161 states and 18618 transitions. [2021-10-13 06:48:51,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 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 06:48:51,094 INFO L276 IsEmpty]: Start isEmpty. Operand 15161 states and 18618 transitions. [2021-10-13 06:48:51,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-10-13 06:48:51,149 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:48:51,149 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 06:48:51,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 06:48:51,149 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:48:51,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:48:51,150 INFO L82 PathProgramCache]: Analyzing trace with hash 12046483, now seen corresponding path program 1 times [2021-10-13 06:48:51,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:48:51,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71754343] [2021-10-13 06:48:51,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:48:51,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:48:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:48:51,270 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-10-13 06:48:51,270 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:48:51,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71754343] [2021-10-13 06:48:51,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71754343] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:48:51,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:48:51,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:48:51,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721908566] [2021-10-13 06:48:51,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:48:51,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:48:51,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:48:51,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:48:51,275 INFO L87 Difference]: Start difference. First operand 15161 states and 18618 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 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 06:48:51,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:48:51,958 INFO L93 Difference]: Finished difference Result 31465 states and 38505 transitions. [2021-10-13 06:48:51,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:48:51,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 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 305 [2021-10-13 06:48:51,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:48:52,073 INFO L225 Difference]: With dead ends: 31465 [2021-10-13 06:48:52,073 INFO L226 Difference]: Without dead ends: 16591 [2021-10-13 06:48:52,079 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:48:52,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16591 states. [2021-10-13 06:48:52,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16591 to 16019. [2021-10-13 06:48:52,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16019 states, 16018 states have (on average 1.2237482831814208) internal successors, (19602), 16018 states have internal predecessors, (19602), 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 06:48:52,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16019 states to 16019 states and 19602 transitions. [2021-10-13 06:48:52,415 INFO L78 Accepts]: Start accepts. Automaton has 16019 states and 19602 transitions. Word has length 305 [2021-10-13 06:48:52,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:48:52,415 INFO L470 AbstractCegarLoop]: Abstraction has 16019 states and 19602 transitions. [2021-10-13 06:48:52,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 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 06:48:52,416 INFO L276 IsEmpty]: Start isEmpty. Operand 16019 states and 19602 transitions. [2021-10-13 06:48:52,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-10-13 06:48:52,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:48:52,442 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:52,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-13 06:48:52,442 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:48:52,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:48:52,443 INFO L82 PathProgramCache]: Analyzing trace with hash -369890842, now seen corresponding path program 1 times [2021-10-13 06:48:52,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:48:52,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985691916] [2021-10-13 06:48:52,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:48:52,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:48:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:48:52,734 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 111 proven. 6 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-10-13 06:48:52,734 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:48:52,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985691916] [2021-10-13 06:48:52,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985691916] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 06:48:52,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465557062] [2021-10-13 06:48:52,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:48:52,737 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:48:52,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:48:52,742 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:48:52,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 06:48:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:48:53,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 06:48:53,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:48:54,000 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 239 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-10-13 06:48:54,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:48:54,786 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 239 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-10-13 06:48:54,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465557062] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:48:54,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 06:48:54,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-13 06:48:54,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585923460] [2021-10-13 06:48:54,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:48:54,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:48:54,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:48:54,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:48:54,789 INFO L87 Difference]: Start difference. First operand 16019 states and 19602 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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 06:48:55,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:48:55,505 INFO L93 Difference]: Finished difference Result 32895 states and 40556 transitions. [2021-10-13 06:48:55,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:48:55,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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 309 [2021-10-13 06:48:55,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:48:55,532 INFO L225 Difference]: With dead ends: 32895 [2021-10-13 06:48:55,533 INFO L226 Difference]: Without dead ends: 18021 [2021-10-13 06:48:55,542 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 616 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.8ms TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:48:55,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18021 states. [2021-10-13 06:48:55,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18021 to 17735. [2021-10-13 06:48:55,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17735 states, 17734 states have (on average 1.2144468253073193) internal successors, (21537), 17734 states have internal predecessors, (21537), 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 06:48:55,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17735 states to 17735 states and 21537 transitions. [2021-10-13 06:48:55,941 INFO L78 Accepts]: Start accepts. Automaton has 17735 states and 21537 transitions. Word has length 309 [2021-10-13 06:48:55,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:48:55,941 INFO L470 AbstractCegarLoop]: Abstraction has 17735 states and 21537 transitions. [2021-10-13 06:48:55,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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 06:48:55,942 INFO L276 IsEmpty]: Start isEmpty. Operand 17735 states and 21537 transitions. [2021-10-13 06:48:55,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-10-13 06:48:55,962 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:48:55,962 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 06:48:56,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 06:48:56,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-13 06:48:56,186 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:48:56,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:48:56,187 INFO L82 PathProgramCache]: Analyzing trace with hash -376445677, now seen corresponding path program 1 times [2021-10-13 06:48:56,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:48:56,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236397457] [2021-10-13 06:48:56,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:48:56,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:48:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:48:56,377 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-10-13 06:48:56,378 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:48:56,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236397457] [2021-10-13 06:48:56,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236397457] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:48:56,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:48:56,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:48:56,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635525490] [2021-10-13 06:48:56,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:48:56,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:48:56,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:48:56,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:48:56,381 INFO L87 Difference]: Start difference. First operand 17735 states and 21537 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 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 06:48:56,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:48:56,948 INFO L93 Difference]: Finished difference Result 34325 states and 41764 transitions. [2021-10-13 06:48:56,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:48:56,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 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 338 [2021-10-13 06:48:56,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:48:56,968 INFO L225 Difference]: With dead ends: 34325 [2021-10-13 06:48:56,968 INFO L226 Difference]: Without dead ends: 17306 [2021-10-13 06:48:56,979 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:48:56,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17306 states. [2021-10-13 06:48:57,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17306 to 17306. [2021-10-13 06:48:57,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17306 states, 17305 states have (on average 1.2159491476451894) internal successors, (21042), 17305 states have internal predecessors, (21042), 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 06:48:57,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17306 states to 17306 states and 21042 transitions. [2021-10-13 06:48:57,419 INFO L78 Accepts]: Start accepts. Automaton has 17306 states and 21042 transitions. Word has length 338 [2021-10-13 06:48:57,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:48:57,419 INFO L470 AbstractCegarLoop]: Abstraction has 17306 states and 21042 transitions. [2021-10-13 06:48:57,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 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 06:48:57,420 INFO L276 IsEmpty]: Start isEmpty. Operand 17306 states and 21042 transitions. [2021-10-13 06:48:57,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2021-10-13 06:48:57,438 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:48:57,439 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 06:48:57,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-13 06:48:57,439 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:48:57,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:48:57,440 INFO L82 PathProgramCache]: Analyzing trace with hash 2045576872, now seen corresponding path program 1 times [2021-10-13 06:48:57,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:48:57,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010211031] [2021-10-13 06:48:57,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:48:57,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:48:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:48:57,670 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 281 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 06:48:57,671 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:48:57,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010211031] [2021-10-13 06:48:57,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010211031] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:48:57,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:48:57,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:48:57,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263660080] [2021-10-13 06:48:57,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:48:57,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:48:57,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:48:57,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:48:57,674 INFO L87 Difference]: Start difference. First operand 17306 states and 21042 transitions. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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 06:48:58,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:48:58,599 INFO L93 Difference]: Finished difference Result 34897 states and 42444 transitions. [2021-10-13 06:48:58,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:48:58,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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 345 [2021-10-13 06:48:58,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:48:58,617 INFO L225 Difference]: With dead ends: 34897 [2021-10-13 06:48:58,618 INFO L226 Difference]: Without dead ends: 18307 [2021-10-13 06:48:58,629 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:48:58,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18307 states. [2021-10-13 06:48:58,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18307 to 18021. [2021-10-13 06:48:58,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18021 states, 18020 states have (on average 1.2029966703662598) internal successors, (21678), 18020 states have internal predecessors, (21678), 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 06:48:58,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18021 states to 18021 states and 21678 transitions. [2021-10-13 06:48:58,942 INFO L78 Accepts]: Start accepts. Automaton has 18021 states and 21678 transitions. Word has length 345 [2021-10-13 06:48:59,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:48:59,052 INFO L470 AbstractCegarLoop]: Abstraction has 18021 states and 21678 transitions. [2021-10-13 06:48:59,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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 06:48:59,053 INFO L276 IsEmpty]: Start isEmpty. Operand 18021 states and 21678 transitions. [2021-10-13 06:48:59,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2021-10-13 06:48:59,071 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:48:59,071 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-13 06:48:59,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-13 06:48:59,072 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:48:59,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:48:59,073 INFO L82 PathProgramCache]: Analyzing trace with hash -142108052, now seen corresponding path program 1 times [2021-10-13 06:48:59,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:48:59,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049772506] [2021-10-13 06:48:59,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:48:59,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:48:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:48:59,269 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 287 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 06:48:59,269 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:48:59,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049772506] [2021-10-13 06:48:59,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049772506] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:48:59,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:48:59,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:48:59,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023177106] [2021-10-13 06:48:59,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:48:59,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:48:59,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:48:59,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:48:59,272 INFO L87 Difference]: Start difference. First operand 18021 states and 21678 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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 06:48:59,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:48:59,982 INFO L93 Difference]: Finished difference Result 42192 states and 51019 transitions. [2021-10-13 06:48:59,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:48:59,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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 348 [2021-10-13 06:48:59,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:49:00,005 INFO L225 Difference]: With dead ends: 42192 [2021-10-13 06:49:00,005 INFO L226 Difference]: Without dead ends: 24887 [2021-10-13 06:49:00,016 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:49:00,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24887 states. [2021-10-13 06:49:00,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24887 to 22597. [2021-10-13 06:49:00,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22597 states, 22596 states have (on average 1.2224287484510532) internal successors, (27622), 22596 states have internal predecessors, (27622), 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 06:49:00,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22597 states to 22597 states and 27622 transitions. [2021-10-13 06:49:00,380 INFO L78 Accepts]: Start accepts. Automaton has 22597 states and 27622 transitions. Word has length 348 [2021-10-13 06:49:00,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:49:00,381 INFO L470 AbstractCegarLoop]: Abstraction has 22597 states and 27622 transitions. [2021-10-13 06:49:00,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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 06:49:00,381 INFO L276 IsEmpty]: Start isEmpty. Operand 22597 states and 27622 transitions. [2021-10-13 06:49:00,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2021-10-13 06:49:00,404 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:49:00,404 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 06:49:00,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-13 06:49:00,405 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:49:00,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:49:00,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1953823225, now seen corresponding path program 1 times [2021-10-13 06:49:00,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:49:00,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972712710] [2021-10-13 06:49:00,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:49:00,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:49:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:49:00,620 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-10-13 06:49:00,621 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:49:00,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972712710] [2021-10-13 06:49:00,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972712710] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:49:00,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:49:00,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 06:49:00,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491025628] [2021-10-13 06:49:00,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:49:00,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:49:00,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:49:00,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:49:00,696 INFO L87 Difference]: Start difference. First operand 22597 states and 27622 transitions. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 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 06:49:01,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:49:01,210 INFO L93 Difference]: Finished difference Result 60210 states and 73725 transitions. [2021-10-13 06:49:01,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:49:01,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 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 360 [2021-10-13 06:49:01,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:49:01,245 INFO L225 Difference]: With dead ends: 60210 [2021-10-13 06:49:01,245 INFO L226 Difference]: Without dead ends: 38329 [2021-10-13 06:49:01,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:49:01,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38329 states. [2021-10-13 06:49:01,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38329 to 38327. [2021-10-13 06:49:01,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38327 states, 38326 states have (on average 1.2235036267807755) internal successors, (46892), 38326 states have internal predecessors, (46892), 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 06:49:01,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38327 states to 38327 states and 46892 transitions. [2021-10-13 06:49:01,925 INFO L78 Accepts]: Start accepts. Automaton has 38327 states and 46892 transitions. Word has length 360 [2021-10-13 06:49:01,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:49:01,925 INFO L470 AbstractCegarLoop]: Abstraction has 38327 states and 46892 transitions. [2021-10-13 06:49:01,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 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 06:49:01,926 INFO L276 IsEmpty]: Start isEmpty. Operand 38327 states and 46892 transitions. [2021-10-13 06:49:01,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2021-10-13 06:49:01,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:49:01,977 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 06:49:01,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-13 06:49:01,978 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:49:01,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:49:01,978 INFO L82 PathProgramCache]: Analyzing trace with hash -470726183, now seen corresponding path program 1 times [2021-10-13 06:49:01,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:49:01,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775629989] [2021-10-13 06:49:01,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:49:01,986 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:49:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:49:02,231 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 323 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:49:02,231 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:49:02,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775629989] [2021-10-13 06:49:02,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775629989] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:49:02,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:49:02,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:49:02,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800874208] [2021-10-13 06:49:02,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:49:02,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:49:02,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:49:02,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:49:02,236 INFO L87 Difference]: Start difference. First operand 38327 states and 46892 transitions. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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 06:49:03,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:49:03,310 INFO L93 Difference]: Finished difference Result 80657 states and 98505 transitions. [2021-10-13 06:49:03,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:49:03,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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 366 [2021-10-13 06:49:03,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:49:03,352 INFO L225 Difference]: With dead ends: 80657 [2021-10-13 06:49:03,353 INFO L226 Difference]: Without dead ends: 42903 [2021-10-13 06:49:03,371 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:49:03,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42903 states. [2021-10-13 06:49:03,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42903 to 42617. [2021-10-13 06:49:03,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42617 states, 42616 states have (on average 1.2112117514548526) internal successors, (51617), 42616 states have internal predecessors, (51617), 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 06:49:04,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42617 states to 42617 states and 51617 transitions. [2021-10-13 06:49:04,044 INFO L78 Accepts]: Start accepts. Automaton has 42617 states and 51617 transitions. Word has length 366 [2021-10-13 06:49:04,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:49:04,044 INFO L470 AbstractCegarLoop]: Abstraction has 42617 states and 51617 transitions. [2021-10-13 06:49:04,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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 06:49:04,045 INFO L276 IsEmpty]: Start isEmpty. Operand 42617 states and 51617 transitions. [2021-10-13 06:49:04,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2021-10-13 06:49:04,075 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:49:04,075 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 06:49:04,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-13 06:49:04,076 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:49:04,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:49:04,076 INFO L82 PathProgramCache]: Analyzing trace with hash -107101312, now seen corresponding path program 1 times [2021-10-13 06:49:04,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:49:04,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186341773] [2021-10-13 06:49:04,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:49:04,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:49:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:49:04,248 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 254 proven. 3 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2021-10-13 06:49:04,249 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:49:04,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186341773] [2021-10-13 06:49:04,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186341773] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 06:49:04,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786127782] [2021-10-13 06:49:04,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:49:04,250 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:49:04,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:49:04,254 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:49:04,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 06:49:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:49:05,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 06:49:05,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:49:05,942 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-10-13 06:49:05,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:49:06,769 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-10-13 06:49:06,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786127782] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:49:06,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 06:49:06,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-13 06:49:06,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911152432] [2021-10-13 06:49:06,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:49:06,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:49:06,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:49:06,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:49:06,772 INFO L87 Difference]: Start difference. First operand 42617 states and 51617 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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 06:49:07,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:49:07,716 INFO L93 Difference]: Finished difference Result 85517 states and 104179 transitions. [2021-10-13 06:49:07,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:49:07,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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 411 [2021-10-13 06:49:07,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:49:07,717 INFO L225 Difference]: With dead ends: 85517 [2021-10-13 06:49:07,717 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 06:49:07,736 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 823 GetRequests, 819 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.1ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:49:07,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 06:49:07,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 06:49:07,737 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 06:49:07,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 06:49:07,737 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 411 [2021-10-13 06:49:07,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:49:07,737 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 06:49:07,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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 06:49:07,737 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 06:49:07,738 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 06:49:07,740 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:49:07,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 06:49:07,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:49:07,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 06:49:07,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:49:08,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:49:08,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:49:10,125 INFO L857 garLoopResultBuilder]: For program point L498(lines 498 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,125 INFO L857 garLoopResultBuilder]: For program point L432(lines 432 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,126 INFO L857 garLoopResultBuilder]: For program point L366(lines 366 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,126 INFO L857 garLoopResultBuilder]: For program point L763(lines 763 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,126 INFO L857 garLoopResultBuilder]: For program point L632(lines 632 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,126 INFO L857 garLoopResultBuilder]: For program point L566(lines 566 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,126 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,126 INFO L857 garLoopResultBuilder]: For program point L1293(lines 1293 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,126 INFO L857 garLoopResultBuilder]: For program point L1360(lines 1360 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,126 INFO L857 garLoopResultBuilder]: For program point L1162(lines 1162 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,127 INFO L857 garLoopResultBuilder]: For program point L105(lines 105 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,127 INFO L857 garLoopResultBuilder]: For program point L1096(lines 1096 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,127 INFO L857 garLoopResultBuilder]: For program point L1031(lines 1031 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,127 INFO L857 garLoopResultBuilder]: For program point L965(lines 965 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,128 INFO L857 garLoopResultBuilder]: For program point L899(lines 899 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,128 INFO L857 garLoopResultBuilder]: For program point L174(lines 174 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,128 INFO L857 garLoopResultBuilder]: For program point L835(lines 835 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,128 INFO L857 garLoopResultBuilder]: For program point L771(lines 771 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,128 INFO L857 garLoopResultBuilder]: For program point L507(lines 507 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,128 INFO L857 garLoopResultBuilder]: For program point L243(lines 243 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,128 INFO L857 garLoopResultBuilder]: For program point L1433(lines 1433 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,128 INFO L857 garLoopResultBuilder]: For program point L376(lines 376 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,128 INFO L857 garLoopResultBuilder]: For program point L311(lines 311 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,128 INFO L857 garLoopResultBuilder]: For program point L1236(lines 1236 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,129 INFO L857 garLoopResultBuilder]: For program point L576(lines 576 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,129 INFO L857 garLoopResultBuilder]: For program point L444(lines 444 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,129 INFO L857 garLoopResultBuilder]: For program point L1369(lines 1369 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,132 INFO L857 garLoopResultBuilder]: For program point L1105(lines 1105 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,132 INFO L857 garLoopResultBuilder]: For program point L643(lines 643 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,132 INFO L857 garLoopResultBuilder]: For program point L1172(lines 1172 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,132 INFO L857 garLoopResultBuilder]: For program point L115(lines 115 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,132 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,133 INFO L857 garLoopResultBuilder]: For program point L182(lines 182 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,133 INFO L857 garLoopResultBuilder]: For program point L1041(lines 1041 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,135 INFO L857 garLoopResultBuilder]: For program point L909(lines 909 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,135 INFO L857 garLoopResultBuilder]: For program point L711(lines 711 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,136 INFO L857 garLoopResultBuilder]: For program point L976(lines 976 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,136 INFO L857 garLoopResultBuilder]: For program point L779(lines 779 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,136 INFO L857 garLoopResultBuilder]: For program point L846(lines 846 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,136 INFO L857 garLoopResultBuilder]: For program point L451(lines 451 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,136 INFO L857 garLoopResultBuilder]: For program point L1442(lines 1442 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,136 INFO L857 garLoopResultBuilder]: For program point L584(lines 584 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,136 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,137 INFO L857 garLoopResultBuilder]: For program point L1114(lines 1114 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,137 INFO L857 garLoopResultBuilder]: For program point L1048(lines 1048 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,137 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,138 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 06:49:10,138 INFO L857 garLoopResultBuilder]: For program point L1247(lines 1247 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,138 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,138 INFO L857 garLoopResultBuilder]: For program point L917(lines 917 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,138 INFO L857 garLoopResultBuilder]: For program point L719(lines 719 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,138 INFO L857 garLoopResultBuilder]: For program point L653(lines 653 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,139 INFO L857 garLoopResultBuilder]: For program point L191(lines 191 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,139 INFO L857 garLoopResultBuilder]: For program point L1315(lines 1315 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,139 INFO L857 garLoopResultBuilder]: For program point L258(lines 258 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,140 INFO L857 garLoopResultBuilder]: For program point L1183(lines 1183 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,140 INFO L857 garLoopResultBuilder]: For program point L985(lines 985 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,140 INFO L857 garLoopResultBuilder]: For program point L787(lines 787 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,142 INFO L857 garLoopResultBuilder]: For program point L523(lines 523 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,143 INFO L857 garLoopResultBuilder]: For program point L854(lines 854 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,143 INFO L857 garLoopResultBuilder]: For program point L460(lines 460 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,143 INFO L857 garLoopResultBuilder]: For program point L593(lines 593 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,143 INFO L857 garLoopResultBuilder]: For program point L1452(lines 1452 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,143 INFO L857 garLoopResultBuilder]: For program point L329(lines 329 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,143 INFO L857 garLoopResultBuilder]: For program point L1122(lines 1122 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,144 INFO L857 garLoopResultBuilder]: For program point L65(lines 65 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,144 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1552) no Hoare annotation was computed. [2021-10-13 06:49:10,144 INFO L857 garLoopResultBuilder]: For program point L794(lines 794 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,144 INFO L857 garLoopResultBuilder]: For program point L1323(lines 1323 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,144 INFO L857 garLoopResultBuilder]: For program point L993(lines 993 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,144 INFO L857 garLoopResultBuilder]: For program point L927(lines 927 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,145 INFO L857 garLoopResultBuilder]: For program point L663(lines 663 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,145 INFO L857 garLoopResultBuilder]: For program point L267(lines 267 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,145 INFO L857 garLoopResultBuilder]: For program point L201(lines 201 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,145 INFO L857 garLoopResultBuilder]: For program point L1192(lines 1192 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,145 INFO L857 garLoopResultBuilder]: For program point L532(lines 532 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,145 INFO L857 garLoopResultBuilder]: For program point L1391(lines 1391 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,145 INFO L857 garLoopResultBuilder]: For program point L1259(lines 1259 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,146 INFO L857 garLoopResultBuilder]: For program point L136(lines 136 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,146 INFO L857 garLoopResultBuilder]: For program point L863(lines 863 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,146 INFO L857 garLoopResultBuilder]: For program point L468(lines 468 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,146 INFO L857 garLoopResultBuilder]: For program point L1130(lines 1130 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,146 INFO L857 garLoopResultBuilder]: For program point L668(lines 668 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,148 INFO L853 garLoopResultBuilder]: At program point L1659(lines 64 1660) the Hoare annotation is: (let ((.cse10 (= ~a12~0 1)) (.cse9 (= ~a6~0 1))) (let ((.cse3 (= ~a27~0 1)) (.cse4 (= ~a3~0 0)) (.cse12 (<= ~a6~0 0)) (.cse2 (= ~a11~0 1)) (.cse11 (= ~a26~0 ~a11~0)) (.cse0 (= ~a26~0 1)) (.cse7 (= ~a3~0 1)) (.cse1 (= ~a5~0 1)) (.cse5 (= ~a10~0 1)) (.cse6 (or .cse10 .cse9)) (.cse8 (<= 2 ~a3~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse1 .cse5 .cse6 .cse7) (and .cse1 .cse8 .cse3) (and .cse1 .cse2 .cse9 .cse3 .cse4) (and .cse1 .cse10 .cse2 .cse7 .cse9) (and .cse1 .cse6 .cse11) (and .cse0 .cse1 .cse10 .cse8) (and .cse1 .cse6 (<= ~a11~0 0)) (and .cse1 .cse3 .cse12) (and .cse1 .cse10 .cse4) (and .cse0 .cse1 .cse5 .cse6) (and .cse1 .cse8 .cse2 .cse12) (and .cse1 .cse5 .cse7 .cse12) (and .cse1 .cse6 .cse7 .cse3) (and .cse1 .cse2 .cse11 .cse4 .cse12) (and .cse1 (= ~a25~0 ~a6~0) .cse6 .cse8) (and .cse1 .cse5 .cse2 .cse11) (and .cse0 .cse1 .cse7) (and .cse1 .cse5 .cse6 .cse8 (or .cse10 (= ~a7~0 1)))))) [2021-10-13 06:49:10,148 INFO L857 garLoopResultBuilder]: For program point L602(lines 602 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,148 INFO L857 garLoopResultBuilder]: For program point L1462(lines 1462 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,149 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,149 INFO L857 garLoopResultBuilder]: For program point L1331(lines 1331 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,149 INFO L860 garLoopResultBuilder]: At program point L1662(lines 1662 1679) the Hoare annotation is: true [2021-10-13 06:49:10,149 INFO L857 garLoopResultBuilder]: For program point L539(lines 539 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,149 INFO L857 garLoopResultBuilder]: For program point L407(lines 407 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,149 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,150 INFO L857 garLoopResultBuilder]: For program point L1200(lines 1200 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,150 INFO L857 garLoopResultBuilder]: For program point L805(lines 805 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,150 INFO L857 garLoopResultBuilder]: For program point L145(lines 145 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,150 INFO L857 garLoopResultBuilder]: For program point L1004(lines 1004 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,150 INFO L857 garLoopResultBuilder]: For program point L1137(lines 1137 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,150 INFO L857 garLoopResultBuilder]: For program point L1071(lines 1071 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,151 INFO L857 garLoopResultBuilder]: For program point L873(lines 873 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,151 INFO L857 garLoopResultBuilder]: For program point L675(lines 675 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,151 INFO L857 garLoopResultBuilder]: For program point L477(lines 477 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,151 INFO L857 garLoopResultBuilder]: For program point L1336(lines 1336 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,151 INFO L857 garLoopResultBuilder]: For program point L743(lines 743 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,152 INFO L853 garLoopResultBuilder]: At program point L1668-2(lines 1668 1678) the Hoare annotation is: (let ((.cse10 (= ~a12~0 1)) (.cse9 (= ~a6~0 1))) (let ((.cse3 (= ~a27~0 1)) (.cse4 (= ~a3~0 0)) (.cse12 (<= ~a6~0 0)) (.cse2 (= ~a11~0 1)) (.cse11 (= ~a26~0 ~a11~0)) (.cse0 (= ~a26~0 1)) (.cse7 (= ~a3~0 1)) (.cse1 (= ~a5~0 1)) (.cse5 (= ~a10~0 1)) (.cse6 (or .cse10 .cse9)) (.cse8 (<= 2 ~a3~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse1 .cse5 .cse6 .cse7) (and .cse1 .cse8 .cse3) (and .cse1 .cse2 .cse9 .cse3 .cse4) (and .cse1 .cse10 .cse2 .cse7 .cse9) (and .cse1 .cse6 .cse11) (and .cse0 .cse1 .cse10 .cse8) (and .cse1 .cse6 (<= ~a11~0 0)) (and .cse1 .cse3 .cse12) (and .cse1 .cse10 .cse4) (and .cse0 .cse1 .cse5 .cse6) (and .cse1 .cse8 .cse2 .cse12) (and .cse1 .cse5 .cse7 .cse12) (and .cse1 .cse6 .cse7 .cse3) (and .cse1 .cse2 .cse11 .cse4 .cse12) (and .cse1 (= ~a25~0 ~a6~0) .cse6 .cse8) (and .cse1 .cse5 .cse2 .cse11) (and .cse0 .cse1 .cse7) (and .cse1 .cse5 .cse6 .cse8 (or .cse10 (= ~a7~0 1)))))) [2021-10-13 06:49:10,152 INFO L857 garLoopResultBuilder]: For program point L1470(lines 1470 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,153 INFO L857 garLoopResultBuilder]: For program point L83(lines 83 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,153 INFO L857 garLoopResultBuilder]: For program point L613(lines 613 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,154 INFO L857 garLoopResultBuilder]: For program point L415(lines 415 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,154 INFO L857 garLoopResultBuilder]: For program point L349(lines 349 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,154 INFO L857 garLoopResultBuilder]: For program point L1142(lines 1142 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,154 INFO L857 garLoopResultBuilder]: For program point L1076(lines 1076 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,154 INFO L857 garLoopResultBuilder]: For program point L878(lines 878 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,154 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 06:49:10,154 INFO L857 garLoopResultBuilder]: For program point L549(lines 549 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,155 INFO L857 garLoopResultBuilder]: For program point L1210(lines 1210 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,155 INFO L857 garLoopResultBuilder]: For program point L814(lines 814 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,155 INFO L857 garLoopResultBuilder]: For program point L1673(line 1673) no Hoare annotation was computed. [2021-10-13 06:49:10,155 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,155 INFO L857 garLoopResultBuilder]: For program point L1013(lines 1013 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,155 INFO L857 garLoopResultBuilder]: For program point L947(lines 947 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,155 INFO L857 garLoopResultBuilder]: For program point L156(lines 156 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,156 INFO L857 garLoopResultBuilder]: For program point L685(lines 685 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,156 INFO L857 garLoopResultBuilder]: For program point L1412(lines 1412 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,156 INFO L857 garLoopResultBuilder]: For program point L1346(lines 1346 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,156 INFO L857 garLoopResultBuilder]: For program point L223(lines 223 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,156 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,156 INFO L857 garLoopResultBuilder]: For program point L753(lines 753 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,157 INFO L857 garLoopResultBuilder]: For program point L1084(lines 1084 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,157 INFO L857 garLoopResultBuilder]: For program point L556(lines 556 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,157 INFO L857 garLoopResultBuilder]: For program point L490(lines 490 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,157 INFO L857 garLoopResultBuilder]: For program point L424(lines 424 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,157 INFO L857 garLoopResultBuilder]: For program point L358(lines 358 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,157 INFO L857 garLoopResultBuilder]: For program point L1548-1(lines 64 1660) no Hoare annotation was computed. [2021-10-13 06:49:10,158 INFO L857 garLoopResultBuilder]: For program point L1284(lines 1284 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,158 INFO L857 garLoopResultBuilder]: For program point L1152(lines 1152 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,158 INFO L857 garLoopResultBuilder]: For program point L624(lines 624 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,158 INFO L857 garLoopResultBuilder]: For program point L294(lines 294 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,158 INFO L857 garLoopResultBuilder]: For program point L1021(lines 1021 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,158 INFO L857 garLoopResultBuilder]: For program point L823(lines 823 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,158 INFO L857 garLoopResultBuilder]: For program point L1220(lines 1220 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,159 INFO L857 garLoopResultBuilder]: For program point L1551-1(lines 64 1660) no Hoare annotation was computed. [2021-10-13 06:49:10,159 INFO L857 garLoopResultBuilder]: For program point L957(lines 957 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,159 INFO L857 garLoopResultBuilder]: For program point L1552(line 1552) no Hoare annotation was computed. [2021-10-13 06:49:10,159 INFO L857 garLoopResultBuilder]: For program point L1354(lines 1354 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,159 INFO L857 garLoopResultBuilder]: For program point L165(lines 165 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,159 INFO L857 garLoopResultBuilder]: For program point L99(lines 99 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,159 INFO L857 garLoopResultBuilder]: For program point L694(lines 694 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,160 INFO L857 garLoopResultBuilder]: For program point L232(lines 232 1475) no Hoare annotation was computed. [2021-10-13 06:49:10,166 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:49:10,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:49:10 BoogieIcfgContainer [2021-10-13 06:49:10,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:49:10,203 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:49:10,203 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:49:10,203 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:49:10,204 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:48:31" (3/4) ... [2021-10-13 06:49:10,206 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 06:49:10,245 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 123 nodes and edges [2021-10-13 06:49:10,256 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-13 06:49:10,260 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-13 06:49:10,264 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-13 06:49:10,505 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 06:49:10,505 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:49:10,507 INFO L168 Benchmark]: Toolchain (without parser) took 43324.78 ms. Allocated memory was 115.3 MB in the beginning and 5.4 GB in the end (delta: 5.3 GB). Free memory was 75.1 MB in the beginning and 4.7 GB in the end (delta: -4.7 GB). Peak memory consumption was 629.8 MB. Max. memory is 16.1 GB. [2021-10-13 06:49:10,507 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 83.9 MB. Free memory was 54.6 MB in the beginning and 54.6 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:49:10,508 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1094.06 ms. Allocated memory is still 115.3 MB. Free memory was 75.1 MB in the beginning and 41.3 MB in the end (delta: 33.8 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2021-10-13 06:49:10,508 INFO L168 Benchmark]: Boogie Procedure Inliner took 178.10 ms. Allocated memory is still 115.3 MB. Free memory was 41.3 MB in the beginning and 76.0 MB in the end (delta: -34.7 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:49:10,509 INFO L168 Benchmark]: Boogie Preprocessor took 109.27 ms. Allocated memory is still 115.3 MB. Free memory was 76.0 MB in the beginning and 66.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 06:49:10,509 INFO L168 Benchmark]: RCFGBuilder took 2961.64 ms. Allocated memory was 115.3 MB in the beginning and 163.6 MB in the end (delta: 48.2 MB). Free memory was 66.2 MB in the beginning and 99.4 MB in the end (delta: -33.2 MB). Peak memory consumption was 64.3 MB. Max. memory is 16.1 GB. [2021-10-13 06:49:10,510 INFO L168 Benchmark]: TraceAbstraction took 38671.46 ms. Allocated memory was 163.6 MB in the beginning and 5.4 GB in the end (delta: 5.3 GB). Free memory was 98.5 MB in the beginning and 4.8 GB in the end (delta: -4.7 GB). Peak memory consumption was 885.6 MB. Max. memory is 16.1 GB. [2021-10-13 06:49:10,510 INFO L168 Benchmark]: Witness Printer took 302.37 ms. Allocated memory is still 5.4 GB. Free memory was 4.8 GB in the beginning and 4.7 GB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-10-13 06:49:10,512 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 83.9 MB. Free memory was 54.6 MB in the beginning and 54.6 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1094.06 ms. Allocated memory is still 115.3 MB. Free memory was 75.1 MB in the beginning and 41.3 MB in the end (delta: 33.8 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 178.10 ms. Allocated memory is still 115.3 MB. Free memory was 41.3 MB in the beginning and 76.0 MB in the end (delta: -34.7 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 109.27 ms. Allocated memory is still 115.3 MB. Free memory was 76.0 MB in the beginning and 66.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2961.64 ms. Allocated memory was 115.3 MB in the beginning and 163.6 MB in the end (delta: 48.2 MB). Free memory was 66.2 MB in the beginning and 99.4 MB in the end (delta: -33.2 MB). Peak memory consumption was 64.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 38671.46 ms. Allocated memory was 163.6 MB in the beginning and 5.4 GB in the end (delta: 5.3 GB). Free memory was 98.5 MB in the beginning and 4.8 GB in the end (delta: -4.7 GB). Peak memory consumption was 885.6 MB. Max. memory is 16.1 GB. * Witness Printer took 302.37 ms. Allocated memory is still 5.4 GB. Free memory was 4.8 GB in the beginning and 4.7 GB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 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: 1552]: 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, 148 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 38558.1ms, OverallIterations: 21, TraceHistogramMax: 7, EmptinessCheckTime: 410.5ms, AutomataDifference: 17261.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 2174.5ms, InitialAbstractionConstructionTime: 17.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2821 SDtfs, 2615 SDslu, 230 SDs, 0 SdLazy, 9438 SolverSat, 2207 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11235.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2507 GetRequests, 2471 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 207.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=42617occurred in iteration=20, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 5473.2ms AutomataMinimizationTime, 21 MinimizatonAttempts, 7156 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 611 NumberOfFragments, 555 HoareAnnotationTreeSize, 3 FomulaSimplifications, 33454 FormulaSimplificationTreeSizeReduction, 1257.1ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 3646 FormulaSimplificationTreeSizeReductionInter, 906.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 827.8ms SsaConstructionTime, 1387.9ms SatisfiabilityAnalysisTime, 8385.8ms InterpolantComputationTime, 6792 NumberOfCodeBlocks, 6792 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 7992 ConstructedInterpolants, 0 QuantifiedInterpolants, 18199 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2464 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 29 InterpolantComputations, 25 PerfectInterpolantSequences, 6073/6091 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: 1662]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: (((((((((((((((((((((a26 == 1 && a5 == 1) && a11 == 1) && a27 == 1) && a3 == 0) || (((a5 == 1 && a10 == 1) && (a12 == 1 || a6 == 1)) && a3 == 1)) || ((a5 == 1 && 2 <= a3) && a27 == 1)) || ((((a5 == 1 && a11 == 1) && a6 == 1) && a27 == 1) && a3 == 0)) || ((((a5 == 1 && a12 == 1) && a11 == 1) && a3 == 1) && a6 == 1)) || ((a5 == 1 && (a12 == 1 || a6 == 1)) && a26 == a11)) || (((a26 == 1 && a5 == 1) && a12 == 1) && 2 <= a3)) || ((a5 == 1 && (a12 == 1 || a6 == 1)) && a11 <= 0)) || ((a5 == 1 && a27 == 1) && a6 <= 0)) || ((a5 == 1 && a12 == 1) && a3 == 0)) || (((a26 == 1 && a5 == 1) && a10 == 1) && (a12 == 1 || a6 == 1))) || (((a5 == 1 && 2 <= a3) && a11 == 1) && a6 <= 0)) || (((a5 == 1 && a10 == 1) && a3 == 1) && a6 <= 0)) || (((a5 == 1 && (a12 == 1 || a6 == 1)) && a3 == 1) && a27 == 1)) || ((((a5 == 1 && a11 == 1) && a26 == a11) && a3 == 0) && a6 <= 0)) || (((a5 == 1 && a25 == a6) && (a12 == 1 || a6 == 1)) && 2 <= a3)) || (((a5 == 1 && a10 == 1) && a11 == 1) && a26 == a11)) || ((a26 == 1 && a5 == 1) && a3 == 1)) || ((((a5 == 1 && a10 == 1) && (a12 == 1 || a6 == 1)) && 2 <= a3) && (a12 == 1 || a7 == 1)) - InvariantResult [Line: 1668]: Loop Invariant Derived loop invariant: (((((((((((((((((((((a26 == 1 && a5 == 1) && a11 == 1) && a27 == 1) && a3 == 0) || (((a5 == 1 && a10 == 1) && (a12 == 1 || a6 == 1)) && a3 == 1)) || ((a5 == 1 && 2 <= a3) && a27 == 1)) || ((((a5 == 1 && a11 == 1) && a6 == 1) && a27 == 1) && a3 == 0)) || ((((a5 == 1 && a12 == 1) && a11 == 1) && a3 == 1) && a6 == 1)) || ((a5 == 1 && (a12 == 1 || a6 == 1)) && a26 == a11)) || (((a26 == 1 && a5 == 1) && a12 == 1) && 2 <= a3)) || ((a5 == 1 && (a12 == 1 || a6 == 1)) && a11 <= 0)) || ((a5 == 1 && a27 == 1) && a6 <= 0)) || ((a5 == 1 && a12 == 1) && a3 == 0)) || (((a26 == 1 && a5 == 1) && a10 == 1) && (a12 == 1 || a6 == 1))) || (((a5 == 1 && 2 <= a3) && a11 == 1) && a6 <= 0)) || (((a5 == 1 && a10 == 1) && a3 == 1) && a6 <= 0)) || (((a5 == 1 && (a12 == 1 || a6 == 1)) && a3 == 1) && a27 == 1)) || ((((a5 == 1 && a11 == 1) && a26 == a11) && a3 == 0) && a6 <= 0)) || (((a5 == 1 && a25 == a6) && (a12 == 1 || a6 == 1)) && 2 <= a3)) || (((a5 == 1 && a10 == 1) && a11 == 1) && a26 == a11)) || ((a26 == 1 && a5 == 1) && a3 == 1)) || ((((a5 == 1 && a10 == 1) && (a12 == 1 || a6 == 1)) && 2 <= a3) && (a12 == 1 || a7 == 1)) RESULT: Ultimate proved your program to be correct! [2021-10-13 06:49:10,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_313ae6c6-a764-4e07-9e31-18bfa2f0304c/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...