./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label30.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label30.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4a525aa37d40889eb24e6cfe05fc1bbc60528354 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:03:24,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:03:24,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:03:25,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:03:25,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:03:25,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:03:25,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:03:25,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:03:25,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:03:25,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:03:25,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:03:25,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:03:25,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:03:25,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:03:25,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:03:25,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:03:25,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:03:25,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:03:25,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:03:25,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:03:25,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:03:25,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:03:25,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:03:25,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:03:25,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:03:25,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:03:25,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:03:25,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:03:25,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:03:25,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:03:25,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:03:25,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:03:25,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:03:25,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:03:25,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:03:25,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:03:25,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:03:25,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:03:25,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:03:25,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:03:25,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:03:25,097 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 03:03:25,154 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:03:25,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:03:25,160 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:03:25,160 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:03:25,160 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:03:25,161 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:03:25,161 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:03:25,161 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:03:25,168 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:03:25,168 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:03:25,169 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:03:25,170 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:03:25,170 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:03:25,170 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:03:25,170 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:03:25,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:03:25,172 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:03:25,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:03:25,172 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:03:25,172 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:03:25,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:03:25,173 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:03:25,173 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:03:25,173 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:03:25,173 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:03:25,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:03:25,174 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:03:25,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:03:25,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:03:25,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:03:25,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:03:25,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:03:25,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:03:25,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:03:25,178 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:03:25,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:03:25,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:03:25,178 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:03:25,178 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:03:25,179 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_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a525aa37d40889eb24e6cfe05fc1bbc60528354 [2021-10-16 03:03:25,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:03:25,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:03:25,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:03:25,573 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:03:25,574 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:03:25,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/eca-rers2012/Problem01_label30.c [2021-10-16 03:03:25,633 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs/data/8032551aa/31977f3e32d8489ea8c7a6f00a29b56e/FLAG0af7c68ef [2021-10-16 03:03:26,220 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:03:26,221 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/sv-benchmarks/c/eca-rers2012/Problem01_label30.c [2021-10-16 03:03:26,232 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs/data/8032551aa/31977f3e32d8489ea8c7a6f00a29b56e/FLAG0af7c68ef [2021-10-16 03:03:26,463 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs/data/8032551aa/31977f3e32d8489ea8c7a6f00a29b56e [2021-10-16 03:03:26,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:03:26,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:03:26,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:03:26,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:03:26,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:03:26,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:03:26" (1/1) ... [2021-10-16 03:03:26,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34599473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:03:26, skipping insertion in model container [2021-10-16 03:03:26,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:03:26" (1/1) ... [2021-10-16 03:03:26,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:03:26,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:03:26,962 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_eda2af4c-3402-43b3-8ce2-288e4e41471a/sv-benchmarks/c/eca-rers2012/Problem01_label30.c[21088,21101] [2021-10-16 03:03:26,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:03:27,002 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:03:27,159 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_eda2af4c-3402-43b3-8ce2-288e4e41471a/sv-benchmarks/c/eca-rers2012/Problem01_label30.c[21088,21101] [2021-10-16 03:03:27,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:03:27,198 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:03:27,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:03:27 WrapperNode [2021-10-16 03:03:27,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:03:27,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:03:27,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:03:27,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:03:27,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:03:27" (1/1) ... [2021-10-16 03:03:27,242 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:03:27" (1/1) ... [2021-10-16 03:03:27,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:03:27,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:03:27,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:03:27,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:03:27,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:03:27" (1/1) ... [2021-10-16 03:03:27,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:03:27" (1/1) ... [2021-10-16 03:03:27,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:03:27" (1/1) ... [2021-10-16 03:03:27,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:03:27" (1/1) ... [2021-10-16 03:03:27,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:03:27" (1/1) ... [2021-10-16 03:03:27,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:03:27" (1/1) ... [2021-10-16 03:03:27,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:03:27" (1/1) ... [2021-10-16 03:03:27,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:03:27,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:03:27,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:03:27,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:03:27,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:03:27" (1/1) ... [2021-10-16 03:03:27,432 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:03:27,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:03:27,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:03:27,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:03:27,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:03:27,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:03:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:03:27,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:03:29,404 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:03:29,404 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 03:03:29,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:03:29 BoogieIcfgContainer [2021-10-16 03:03:29,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:03:29,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:03:29,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:03:29,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:03:29,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:03:26" (1/3) ... [2021-10-16 03:03:29,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f076b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:03:29, skipping insertion in model container [2021-10-16 03:03:29,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:03:27" (2/3) ... [2021-10-16 03:03:29,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f076b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:03:29, skipping insertion in model container [2021-10-16 03:03:29,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:03:29" (3/3) ... [2021-10-16 03:03:29,416 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label30.c [2021-10-16 03:03:29,425 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:03:29,425 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:03:29,488 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:03:29,499 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:03:29,499 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:03:29,519 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:29,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-16 03:03:29,530 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:03:29,531 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] [2021-10-16 03:03:29,531 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:03:29,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:03:29,538 INFO L82 PathProgramCache]: Analyzing trace with hash 379028359, now seen corresponding path program 1 times [2021-10-16 03:03:29,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:03:29,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272511180] [2021-10-16 03:03:29,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:03:29,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:03:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:03:30,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:03:30,098 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:03:30,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272511180] [2021-10-16 03:03:30,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272511180] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:03:30,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:03:30,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:03:30,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471490493] [2021-10-16 03:03:30,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:03:30,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:03:30,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:03:30,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:03:30,140 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:30,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:03:30,859 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2021-10-16 03:03:30,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:03:30,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2021-10-16 03:03:30,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:03:30,881 INFO L225 Difference]: With dead ends: 297 [2021-10-16 03:03:30,882 INFO L226 Difference]: Without dead ends: 216 [2021-10-16 03:03:30,886 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:03:30,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-10-16 03:03:30,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-10-16 03:03:30,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.5627906976744186) internal successors, (336), 215 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:30,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 336 transitions. [2021-10-16 03:03:30,956 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 336 transitions. Word has length 71 [2021-10-16 03:03:30,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:03:30,957 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 336 transitions. [2021-10-16 03:03:30,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:30,958 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 336 transitions. [2021-10-16 03:03:30,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-16 03:03:30,962 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:03:30,962 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-16 03:03:30,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:03:30,963 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:03:30,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:03:30,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1583650950, now seen corresponding path program 1 times [2021-10-16 03:03:30,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:03:30,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104301330] [2021-10-16 03:03:30,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:03:30,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:03:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:03:31,157 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:03:31,158 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:03:31,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104301330] [2021-10-16 03:03:31,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104301330] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:03:31,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:03:31,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:03:31,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400752189] [2021-10-16 03:03:31,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:03:31,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:03:31,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:03:31,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:03:31,166 INFO L87 Difference]: Start difference. First operand 216 states and 336 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:31,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:03:31,768 INFO L93 Difference]: Finished difference Result 500 states and 848 transitions. [2021-10-16 03:03:31,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:03:31,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2021-10-16 03:03:31,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:03:31,771 INFO L225 Difference]: With dead ends: 500 [2021-10-16 03:03:31,772 INFO L226 Difference]: Without dead ends: 287 [2021-10-16 03:03:31,773 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:03:31,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-16 03:03:31,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 216. [2021-10-16 03:03:31,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.3627906976744186) internal successors, (293), 215 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:31,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 293 transitions. [2021-10-16 03:03:31,788 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 293 transitions. Word has length 78 [2021-10-16 03:03:31,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:03:31,789 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 293 transitions. [2021-10-16 03:03:31,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:31,789 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 293 transitions. [2021-10-16 03:03:31,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-16 03:03:31,792 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:03:31,792 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:03:31,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 03:03:31,793 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:03:31,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:03:31,794 INFO L82 PathProgramCache]: Analyzing trace with hash -2090516040, now seen corresponding path program 1 times [2021-10-16 03:03:31,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:03:31,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261655675] [2021-10-16 03:03:31,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:03:31,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:03:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:03:31,850 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:03:31,851 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:03:31,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261655675] [2021-10-16 03:03:31,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261655675] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:03:31,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:03:31,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 03:03:31,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061189175] [2021-10-16 03:03:31,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:03:31,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:03:31,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:03:31,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:03:31,854 INFO L87 Difference]: Start difference. First operand 216 states and 293 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:32,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:03:32,151 INFO L93 Difference]: Finished difference Result 502 states and 684 transitions. [2021-10-16 03:03:32,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:03:32,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-10-16 03:03:32,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:03:32,154 INFO L225 Difference]: With dead ends: 502 [2021-10-16 03:03:32,154 INFO L226 Difference]: Without dead ends: 287 [2021-10-16 03:03:32,155 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:03:32,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-16 03:03:32,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-16 03:03:32,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.3146853146853146) internal successors, (376), 286 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:32,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 376 transitions. [2021-10-16 03:03:32,168 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 376 transitions. Word has length 86 [2021-10-16 03:03:32,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:03:32,168 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 376 transitions. [2021-10-16 03:03:32,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:32,169 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 376 transitions. [2021-10-16 03:03:32,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-16 03:03:32,172 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:03:32,172 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:03:32,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 03:03:32,173 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:03:32,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:03:32,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1999064902, now seen corresponding path program 1 times [2021-10-16 03:03:32,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:03:32,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143153954] [2021-10-16 03:03:32,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:03:32,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:03:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:03:32,228 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:03:32,228 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:03:32,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143153954] [2021-10-16 03:03:32,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143153954] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:03:32,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:03:32,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:03:32,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811130869] [2021-10-16 03:03:32,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:03:32,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:03:32,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:03:32,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:03:32,231 INFO L87 Difference]: Start difference. First operand 287 states and 376 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:32,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:03:32,513 INFO L93 Difference]: Finished difference Result 857 states and 1125 transitions. [2021-10-16 03:03:32,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:03:32,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-16 03:03:32,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:03:32,517 INFO L225 Difference]: With dead ends: 857 [2021-10-16 03:03:32,517 INFO L226 Difference]: Without dead ends: 571 [2021-10-16 03:03:32,518 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:03:32,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-10-16 03:03:32,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 500. [2021-10-16 03:03:32,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.348697394789579) internal successors, (673), 499 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:32,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 673 transitions. [2021-10-16 03:03:32,569 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 673 transitions. Word has length 95 [2021-10-16 03:03:32,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:03:32,570 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 673 transitions. [2021-10-16 03:03:32,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:32,570 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 673 transitions. [2021-10-16 03:03:32,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-16 03:03:32,575 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:03:32,575 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:03:32,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 03:03:32,576 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:03:32,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:03:32,576 INFO L82 PathProgramCache]: Analyzing trace with hash 812564201, now seen corresponding path program 1 times [2021-10-16 03:03:32,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:03:32,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172389437] [2021-10-16 03:03:32,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:03:32,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:03:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:03:32,652 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:03:32,652 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:03:32,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172389437] [2021-10-16 03:03:32,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172389437] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:03:32,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:03:32,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:03:32,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637029517] [2021-10-16 03:03:32,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:03:32,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:03:32,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:03:32,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:03:32,655 INFO L87 Difference]: Start difference. First operand 500 states and 673 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:32,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:03:32,993 INFO L93 Difference]: Finished difference Result 1141 states and 1518 transitions. [2021-10-16 03:03:32,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:03:32,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-10-16 03:03:32,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:03:32,997 INFO L225 Difference]: With dead ends: 1141 [2021-10-16 03:03:32,997 INFO L226 Difference]: Without dead ends: 642 [2021-10-16 03:03:32,998 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:03:32,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-10-16 03:03:33,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2021-10-16 03:03:33,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 570 states have (on average 1.268421052631579) internal successors, (723), 570 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:33,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 723 transitions. [2021-10-16 03:03:33,016 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 723 transitions. Word has length 101 [2021-10-16 03:03:33,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:03:33,017 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 723 transitions. [2021-10-16 03:03:33,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:33,017 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 723 transitions. [2021-10-16 03:03:33,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-16 03:03:33,019 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:03:33,020 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:03:33,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 03:03:33,020 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:03:33,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:03:33,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1324207788, now seen corresponding path program 1 times [2021-10-16 03:03:33,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:03:33,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026568554] [2021-10-16 03:03:33,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:03:33,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:03:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:03:33,094 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:03:33,095 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:03:33,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026568554] [2021-10-16 03:03:33,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026568554] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:03:33,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:03:33,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:03:33,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829329833] [2021-10-16 03:03:33,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:03:33,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:03:33,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:03:33,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:03:33,098 INFO L87 Difference]: Start difference. First operand 571 states and 723 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:33,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:03:33,566 INFO L93 Difference]: Finished difference Result 1496 states and 1933 transitions. [2021-10-16 03:03:33,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:03:33,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 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 115 [2021-10-16 03:03:33,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:03:33,572 INFO L225 Difference]: With dead ends: 1496 [2021-10-16 03:03:33,573 INFO L226 Difference]: Without dead ends: 855 [2021-10-16 03:03:33,574 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:03:33,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-16 03:03:33,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2021-10-16 03:03:33,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.240102171136654) internal successors, (971), 783 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:33,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 971 transitions. [2021-10-16 03:03:33,608 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 971 transitions. Word has length 115 [2021-10-16 03:03:33,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:03:33,609 INFO L470 AbstractCegarLoop]: Abstraction has 784 states and 971 transitions. [2021-10-16 03:03:33,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:33,609 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 971 transitions. [2021-10-16 03:03:33,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-10-16 03:03:33,612 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:03:33,612 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:03:33,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 03:03:33,613 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:03:33,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:03:33,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1469595462, now seen corresponding path program 1 times [2021-10-16 03:03:33,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:03:33,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266201724] [2021-10-16 03:03:33,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:03:33,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:03:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:03:33,739 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:03:33,739 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:03:33,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266201724] [2021-10-16 03:03:33,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266201724] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:03:33,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:03:33,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:03:33,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947435108] [2021-10-16 03:03:33,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:03:33,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:03:33,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:03:33,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:03:33,743 INFO L87 Difference]: Start difference. First operand 784 states and 971 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:34,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:03:34,001 INFO L93 Difference]: Finished difference Result 1780 states and 2251 transitions. [2021-10-16 03:03:34,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:03:34,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 118 [2021-10-16 03:03:34,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:03:34,008 INFO L225 Difference]: With dead ends: 1780 [2021-10-16 03:03:34,009 INFO L226 Difference]: Without dead ends: 997 [2021-10-16 03:03:34,010 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 [2021-10-16 03:03:34,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-16 03:03:34,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 855. [2021-10-16 03:03:34,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.2482435597189696) internal successors, (1066), 854 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:34,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1066 transitions. [2021-10-16 03:03:34,039 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1066 transitions. Word has length 118 [2021-10-16 03:03:34,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:03:34,039 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1066 transitions. [2021-10-16 03:03:34,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:34,040 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1066 transitions. [2021-10-16 03:03:34,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-10-16 03:03:34,043 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:03:34,043 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2021-10-16 03:03:34,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-16 03:03:34,045 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:03:34,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:03:34,045 INFO L82 PathProgramCache]: Analyzing trace with hash 225543976, now seen corresponding path program 1 times [2021-10-16 03:03:34,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:03:34,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811448169] [2021-10-16 03:03:34,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:03:34,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:03:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:03:34,170 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-16 03:03:34,171 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:03:34,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811448169] [2021-10-16 03:03:34,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811448169] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:03:34,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:03:34,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 03:03:34,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155097952] [2021-10-16 03:03:34,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:03:34,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:03:34,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:03:34,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:03:34,174 INFO L87 Difference]: Start difference. First operand 855 states and 1066 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:34,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:03:34,635 INFO L93 Difference]: Finished difference Result 1993 states and 2478 transitions. [2021-10-16 03:03:34,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:03:34,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 146 [2021-10-16 03:03:34,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:03:34,642 INFO L225 Difference]: With dead ends: 1993 [2021-10-16 03:03:34,642 INFO L226 Difference]: Without dead ends: 1139 [2021-10-16 03:03:34,643 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:03:34,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-10-16 03:03:34,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 997. [2021-10-16 03:03:34,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.2238955823293172) internal successors, (1219), 996 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:34,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1219 transitions. [2021-10-16 03:03:34,671 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1219 transitions. Word has length 146 [2021-10-16 03:03:34,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:03:34,671 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1219 transitions. [2021-10-16 03:03:34,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:34,672 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1219 transitions. [2021-10-16 03:03:34,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-10-16 03:03:34,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:03:34,676 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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, 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] [2021-10-16 03:03:34,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-16 03:03:34,677 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:03:34,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:03:34,678 INFO L82 PathProgramCache]: Analyzing trace with hash -2136713921, now seen corresponding path program 1 times [2021-10-16 03:03:34,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:03:34,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581568619] [2021-10-16 03:03:34,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:03:34,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:03:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:03:34,803 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-10-16 03:03:34,803 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:03:34,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581568619] [2021-10-16 03:03:34,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581568619] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:03:34,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:03:34,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:03:34,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190098504] [2021-10-16 03:03:34,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:03:34,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:03:34,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:03:34,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:03:34,814 INFO L87 Difference]: Start difference. First operand 997 states and 1219 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:35,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:03:35,048 INFO L93 Difference]: Finished difference Result 2064 states and 2552 transitions. [2021-10-16 03:03:35,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:03:35,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 [2021-10-16 03:03:35,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:03:35,056 INFO L225 Difference]: With dead ends: 2064 [2021-10-16 03:03:35,056 INFO L226 Difference]: Without dead ends: 1068 [2021-10-16 03:03:35,058 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:03:35,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-10-16 03:03:35,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1068. [2021-10-16 03:03:35,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1067 states have (on average 1.2174320524835989) internal successors, (1299), 1067 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:35,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1299 transitions. [2021-10-16 03:03:35,090 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1299 transitions. Word has length 211 [2021-10-16 03:03:35,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:03:35,090 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1299 transitions. [2021-10-16 03:03:35,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:35,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1299 transitions. [2021-10-16 03:03:35,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-10-16 03:03:35,095 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:03:35,096 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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, 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] [2021-10-16 03:03:35,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-16 03:03:35,096 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:03:35,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:03:35,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1017032538, now seen corresponding path program 1 times [2021-10-16 03:03:35,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:03:35,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599430342] [2021-10-16 03:03:35,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:03:35,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:03:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:03:35,337 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 175 proven. 83 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-16 03:03:35,337 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:03:35,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599430342] [2021-10-16 03:03:35,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599430342] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 03:03:35,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502381272] [2021-10-16 03:03:35,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:03:35,338 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:03:35,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:03:35,351 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:03:35,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 03:03:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:03:35,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:03:35,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:03:36,193 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-10-16 03:03:36,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:03:36,634 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-10-16 03:03:36,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502381272] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:03:36,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-16 03:03:36,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-16 03:03:36,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387908128] [2021-10-16 03:03:36,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:03:36,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:03:36,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:03:36,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-16 03:03:36,643 INFO L87 Difference]: Start difference. First operand 1068 states and 1299 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:36,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:03:36,910 INFO L93 Difference]: Finished difference Result 2348 states and 2842 transitions. [2021-10-16 03:03:36,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:03:36,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 213 [2021-10-16 03:03:36,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:03:36,917 INFO L225 Difference]: With dead ends: 2348 [2021-10-16 03:03:36,917 INFO L226 Difference]: Without dead ends: 855 [2021-10-16 03:03:36,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 424 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 32.5ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-16 03:03:36,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-16 03:03:36,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2021-10-16 03:03:36,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.08301404853129) internal successors, (848), 783 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:36,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 848 transitions. [2021-10-16 03:03:36,942 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 848 transitions. Word has length 213 [2021-10-16 03:03:36,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:03:36,942 INFO L470 AbstractCegarLoop]: Abstraction has 784 states and 848 transitions. [2021-10-16 03:03:36,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:36,943 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 848 transitions. [2021-10-16 03:03:36,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-10-16 03:03:36,947 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:03:36,948 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-10-16 03:03:36,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:03:37,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-16 03:03:37,175 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:03:37,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:03:37,175 INFO L82 PathProgramCache]: Analyzing trace with hash 2121155970, now seen corresponding path program 1 times [2021-10-16 03:03:37,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:03:37,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750614256] [2021-10-16 03:03:37,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:03:37,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:03:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:03:37,348 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 188 proven. 112 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-10-16 03:03:37,349 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:03:37,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750614256] [2021-10-16 03:03:37,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750614256] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 03:03:37,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161352843] [2021-10-16 03:03:37,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:03:37,350 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:03:37,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:03:37,351 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:03:37,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 03:03:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:03:37,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:03:37,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:03:38,270 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-16 03:03:38,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:03:38,804 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-16 03:03:38,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161352843] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:03:38,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-16 03:03:38,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-16 03:03:38,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107682309] [2021-10-16 03:03:38,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:03:38,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:03:38,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:03:38,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:03:38,807 INFO L87 Difference]: Start difference. First operand 784 states and 848 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:39,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:03:39,005 INFO L93 Difference]: Finished difference Result 1423 states and 1546 transitions. [2021-10-16 03:03:39,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:03:39,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 242 [2021-10-16 03:03:39,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:03:39,007 INFO L225 Difference]: With dead ends: 1423 [2021-10-16 03:03:39,007 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 03:03:39,009 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 483 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.9ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:03:39,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 03:03:39,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 03:03:39,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:39,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 03:03:39,014 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 242 [2021-10-16 03:03:39,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:03:39,015 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 03:03:39,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:39,015 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 03:03:39,015 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 03:03:39,018 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:03:39,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 03:03:39,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:03:39,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 03:03:39,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:03:39,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:03:39,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:03:39,697 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-16 03:03:39,698 INFO L857 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-16 03:03:39,698 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-16 03:03:39,698 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-16 03:03:39,698 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-16 03:03:39,698 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-16 03:03:39,698 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-16 03:03:39,698 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-16 03:03:39,698 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-16 03:03:39,698 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-16 03:03:39,698 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-16 03:03:39,699 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-16 03:03:39,699 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-16 03:03:39,699 INFO L857 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-16 03:03:39,699 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-16 03:03:39,699 INFO L857 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-16 03:03:39,699 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-16 03:03:39,699 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-16 03:03:39,699 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-16 03:03:39,699 INFO L857 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-16 03:03:39,699 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-16 03:03:39,700 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-16 03:03:39,700 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-16 03:03:39,700 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-16 03:03:39,700 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-16 03:03:39,700 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-16 03:03:39,700 INFO L857 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-16 03:03:39,700 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-16 03:03:39,700 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-16 03:03:39,700 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-16 03:03:39,701 INFO L857 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-16 03:03:39,701 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-16 03:03:39,701 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-16 03:03:39,701 INFO L857 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-16 03:03:39,701 INFO L857 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-16 03:03:39,701 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-16 03:03:39,701 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 03:03:39,701 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-16 03:03:39,701 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-16 03:03:39,701 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-16 03:03:39,702 INFO L853 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse2 (= ~a20~0 1)) (.cse4 (<= ~a21~0 0)) (.cse0 (not (= ~a7~0 1))) (.cse6 (= ~a17~0 1)) (.cse5 (<= ~a17~0 0)) (.cse1 (= ~a21~0 1)) (.cse3 (<= ~a16~0 5))) (or (and .cse0 (<= 6 ~a16~0) .cse1 .cse2) (and (<= 5 ~a16~0) .cse1 .cse3 .cse2) (and .cse4 .cse5 .cse2) (and (= ~a12~0 8) (= ~a8~0 13) .cse1 .cse6 .cse2 (= ~a16~0 4)) (and .cse4 .cse6 .cse3) (and .cse0 .cse5 .cse1) (and (not .cse2) .cse4 .cse3) (and .cse0 .cse1 .cse6) (and .cse5 .cse1 .cse3))) [2021-10-16 03:03:39,702 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-16 03:03:39,702 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-16 03:03:39,702 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-16 03:03:39,702 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-16 03:03:39,702 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-16 03:03:39,702 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-16 03:03:39,703 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-16 03:03:39,703 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 03:03:39,703 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-16 03:03:39,703 INFO L860 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-16 03:03:39,703 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-16 03:03:39,703 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-16 03:03:39,703 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-16 03:03:39,703 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-16 03:03:39,703 INFO L857 garLoopResultBuilder]: For program point L557-1(lines 40 585) no Hoare annotation was computed. [2021-10-16 03:03:39,703 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-16 03:03:39,704 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-16 03:03:39,704 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-16 03:03:39,704 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-16 03:03:39,704 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-16 03:03:39,704 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-16 03:03:39,704 INFO L857 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-16 03:03:39,704 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-16 03:03:39,704 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-16 03:03:39,704 INFO L857 garLoopResultBuilder]: For program point L560-1(lines 40 585) no Hoare annotation was computed. [2021-10-16 03:03:39,704 INFO L853 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse2 (= ~a20~0 1)) (.cse4 (<= ~a21~0 0)) (.cse0 (not (= ~a7~0 1))) (.cse6 (= ~a17~0 1)) (.cse5 (<= ~a17~0 0)) (.cse1 (= ~a21~0 1)) (.cse3 (<= ~a16~0 5))) (or (and .cse0 (<= 6 ~a16~0) .cse1 .cse2) (and (<= 5 ~a16~0) .cse1 .cse3 .cse2) (and .cse4 .cse5 .cse2) (and (= ~a12~0 8) (= ~a8~0 13) .cse1 .cse6 .cse2 (= ~a16~0 4)) (and .cse4 .cse6 .cse3) (and .cse0 .cse5 .cse1) (and (not .cse2) .cse4 .cse3) (and .cse0 .cse1 .cse6) (and .cse5 .cse1 .cse3))) [2021-10-16 03:03:39,705 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-16 03:03:39,705 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 561) no Hoare annotation was computed. [2021-10-16 03:03:39,705 INFO L857 garLoopResultBuilder]: For program point L561(line 561) no Hoare annotation was computed. [2021-10-16 03:03:39,705 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-16 03:03:39,705 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-16 03:03:39,705 INFO L857 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-16 03:03:39,705 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-16 03:03:39,705 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-16 03:03:39,706 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-16 03:03:39,709 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:03:39,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:03:39 BoogieIcfgContainer [2021-10-16 03:03:39,743 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:03:39,743 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:03:39,743 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:03:39,744 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:03:39,744 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:03:29" (3/4) ... [2021-10-16 03:03:39,747 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 03:03:39,776 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 108 nodes and edges [2021-10-16 03:03:39,778 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-16 03:03:39,780 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-16 03:03:39,781 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 03:03:39,921 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 03:03:39,921 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:03:39,923 INFO L168 Benchmark]: Toolchain (without parser) took 13454.75 ms. Allocated memory was 98.6 MB in the beginning and 207.6 MB in the end (delta: 109.1 MB). Free memory was 59.1 MB in the beginning and 131.1 MB in the end (delta: -72.0 MB). Peak memory consumption was 37.8 MB. Max. memory is 16.1 GB. [2021-10-16 03:03:39,923 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 98.6 MB. Free memory is still 77.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:03:39,924 INFO L168 Benchmark]: CACSL2BoogieTranslator took 734.46 ms. Allocated memory is still 98.6 MB. Free memory was 58.9 MB in the beginning and 56.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:03:39,925 INFO L168 Benchmark]: Boogie Procedure Inliner took 106.94 ms. Allocated memory is still 98.6 MB. Free memory was 56.3 MB in the beginning and 50.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:03:39,925 INFO L168 Benchmark]: Boogie Preprocessor took 107.23 ms. Allocated memory is still 98.6 MB. Free memory was 50.4 MB in the beginning and 46.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:03:39,926 INFO L168 Benchmark]: RCFGBuilder took 1987.38 ms. Allocated memory was 98.6 MB in the beginning and 134.2 MB in the end (delta: 35.7 MB). Free memory was 46.2 MB in the beginning and 100.9 MB in the end (delta: -54.7 MB). Peak memory consumption was 35.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:03:39,926 INFO L168 Benchmark]: TraceAbstraction took 10333.94 ms. Allocated memory was 134.2 MB in the beginning and 207.6 MB in the end (delta: 73.4 MB). Free memory was 99.8 MB in the beginning and 146.8 MB in the end (delta: -47.0 MB). Peak memory consumption was 119.7 MB. Max. memory is 16.1 GB. [2021-10-16 03:03:39,927 INFO L168 Benchmark]: Witness Printer took 178.37 ms. Allocated memory is still 207.6 MB. Free memory was 146.8 MB in the beginning and 131.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-16 03:03:39,929 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 98.6 MB. Free memory is still 77.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 734.46 ms. Allocated memory is still 98.6 MB. Free memory was 58.9 MB in the beginning and 56.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 106.94 ms. Allocated memory is still 98.6 MB. Free memory was 56.3 MB in the beginning and 50.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 107.23 ms. Allocated memory is still 98.6 MB. Free memory was 50.4 MB in the beginning and 46.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1987.38 ms. Allocated memory was 98.6 MB in the beginning and 134.2 MB in the end (delta: 35.7 MB). Free memory was 46.2 MB in the beginning and 100.9 MB in the end (delta: -54.7 MB). Peak memory consumption was 35.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10333.94 ms. Allocated memory was 134.2 MB in the beginning and 207.6 MB in the end (delta: 73.4 MB). Free memory was 99.8 MB in the beginning and 146.8 MB in the end (delta: -47.0 MB). Peak memory consumption was 119.7 MB. Max. memory is 16.1 GB. * Witness Printer took 178.37 ms. Allocated memory is still 207.6 MB. Free memory was 146.8 MB in the beginning and 131.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 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: 561]: 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, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10223.5ms, OverallIterations: 11, TraceHistogramMax: 6, EmptinessCheckTime: 49.9ms, AutomataDifference: 4261.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 463.7ms, InitialAbstractionConstructionTime: 15.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 570 SDtfs, 797 SDslu, 59 SDs, 0 SdLazy, 2769 SolverSat, 658 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2947.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 945 GetRequests, 921 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 132.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=9, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 300.6ms AutomataMinimizationTime, 11 MinimizatonAttempts, 639 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 40 NumberOfFragments, 221 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1892 FormulaSimplificationTreeSizeReduction, 91.2ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 112 FormulaSimplificationTreeSizeReductionInter, 365.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 152.9ms SsaConstructionTime, 587.0ms SatisfiabilityAnalysisTime, 3431.9ms InterpolantComputationTime, 1931 NumberOfCodeBlocks, 1931 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2371 ConstructedInterpolants, 0 QuantifiedInterpolants, 9084 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1033 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 2404/2599 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: 593]: Loop Invariant Derived loop invariant: ((((((((((!(a7 == 1) && 6 <= a16) && a21 == 1) && a20 == 1) || (((5 <= a16 && a21 == 1) && a16 <= 5) && a20 == 1)) || ((a21 <= 0 && a17 <= 0) && a20 == 1)) || (((((a12 == 8 && a8 == 13) && a21 == 1) && a17 == 1) && a20 == 1) && a16 == 4)) || ((a21 <= 0 && a17 == 1) && a16 <= 5)) || ((!(a7 == 1) && a17 <= 0) && a21 == 1)) || ((!(a20 == 1) && a21 <= 0) && a16 <= 5)) || ((!(a7 == 1) && a21 == 1) && a17 == 1)) || ((a17 <= 0 && a21 == 1) && a16 <= 5) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((!(a7 == 1) && 6 <= a16) && a21 == 1) && a20 == 1) || (((5 <= a16 && a21 == 1) && a16 <= 5) && a20 == 1)) || ((a21 <= 0 && a17 <= 0) && a20 == 1)) || (((((a12 == 8 && a8 == 13) && a21 == 1) && a17 == 1) && a20 == 1) && a16 == 4)) || ((a21 <= 0 && a17 == 1) && a16 <= 5)) || ((!(a7 == 1) && a17 <= 0) && a21 == 1)) || ((!(a20 == 1) && a21 <= 0) && a16 <= 5)) || ((!(a7 == 1) && a21 == 1) && a17 == 1)) || ((a17 <= 0 && a21 == 1) && a16 <= 5) RESULT: Ultimate proved your program to be correct! [2021-10-16 03:03:39,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eda2af4c-3402-43b3-8ce2-288e4e41471a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...