./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label48.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label48.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba --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 1479ddd90ec2fcde77d063083da596ee818d8098bb47b0581d7cfb4606042d51 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:30:53,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:30:53,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:30:53,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:30:53,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:30:53,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:30:53,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:30:53,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:30:53,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:30:53,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:30:53,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:30:53,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:30:53,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:30:53,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:30:53,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:30:53,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:30:53,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:30:53,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:30:53,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:30:53,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:30:53,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:30:53,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:30:53,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:30:53,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:30:53,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:30:53,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:30:53,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:30:53,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:30:53,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:30:53,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:30:53,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:30:53,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:30:53,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:30:53,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:30:53,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:30:53,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:30:53,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:30:53,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:30:53,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:30:53,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:30:53,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:30:53,400 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 01:30:53,427 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:30:53,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:30:53,428 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:30:53,428 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:30:53,429 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:30:53,429 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:30:53,430 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:30:53,430 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:30:53,430 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:30:53,430 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:30:53,431 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:30:53,431 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:30:53,432 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:30:53,432 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:30:53,432 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:30:53,432 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:30:53,432 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:30:53,432 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:30:53,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:30:53,434 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:30:53,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:30:53,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:30:53,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:30:53,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:30:53,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:30:53,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:30:53,435 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:30:53,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:30:53,435 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:30:53,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:30:53,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:30:53,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:30:53,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:30:53,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:30:53,437 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:30:53,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:30:53,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:30:53,437 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:30:53,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:30:53,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:30:53,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:30:53,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1479ddd90ec2fcde77d063083da596ee818d8098bb47b0581d7cfb4606042d51 [2022-11-22 01:30:53,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:30:53,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:30:53,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:30:53,765 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:30:53,765 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:30:53,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/eca-rers2012/Problem01_label48.c [2022-11-22 01:30:56,797 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:30:57,123 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:30:57,123 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/sv-benchmarks/c/eca-rers2012/Problem01_label48.c [2022-11-22 01:30:57,135 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/data/58b5bd051/7bea63e5fde04f59afc9462b9150e5fd/FLAGe764aa7fe [2022-11-22 01:30:57,151 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/data/58b5bd051/7bea63e5fde04f59afc9462b9150e5fd [2022-11-22 01:30:57,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:30:57,156 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:30:57,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:30:57,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:30:57,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:30:57,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:30:57" (1/1) ... [2022-11-22 01:30:57,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cdafd04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:57, skipping insertion in model container [2022-11-22 01:30:57,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:30:57" (1/1) ... [2022-11-22 01:30:57,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:30:57,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:30:57,588 WARN L237 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_c74e53ca-2141-4a05-b1a4-28cc02d80edc/sv-benchmarks/c/eca-rers2012/Problem01_label48.c[20593,20606] [2022-11-22 01:30:57,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:30:57,654 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:30:57,807 WARN L237 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_c74e53ca-2141-4a05-b1a4-28cc02d80edc/sv-benchmarks/c/eca-rers2012/Problem01_label48.c[20593,20606] [2022-11-22 01:30:57,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:30:57,838 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:30:57,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:57 WrapperNode [2022-11-22 01:30:57,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:30:57,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:30:57,840 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:30:57,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:30:57,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:57" (1/1) ... [2022-11-22 01:30:57,861 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:57" (1/1) ... [2022-11-22 01:30:57,910 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 657 [2022-11-22 01:30:57,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:30:57,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:30:57,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:30:57,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:30:57,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:57" (1/1) ... [2022-11-22 01:30:57,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:57" (1/1) ... [2022-11-22 01:30:57,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:57" (1/1) ... [2022-11-22 01:30:57,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:57" (1/1) ... [2022-11-22 01:30:57,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:57" (1/1) ... [2022-11-22 01:30:57,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:57" (1/1) ... [2022-11-22 01:30:57,964 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:57" (1/1) ... [2022-11-22 01:30:57,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:57" (1/1) ... [2022-11-22 01:30:57,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:30:57,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:30:57,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:30:57,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:30:57,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:57" (1/1) ... [2022-11-22 01:30:57,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:30:57,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:30:58,011 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:30:58,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:30:58,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:30:58,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:30:58,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:30:58,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:30:58,196 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:30:58,198 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:30:59,334 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:30:59,652 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:30:59,653 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 01:30:59,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:30:59 BoogieIcfgContainer [2022-11-22 01:30:59,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:30:59,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:30:59,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:30:59,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:30:59,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:30:57" (1/3) ... [2022-11-22 01:30:59,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6373f8c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:30:59, skipping insertion in model container [2022-11-22 01:30:59,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:57" (2/3) ... [2022-11-22 01:30:59,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6373f8c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:30:59, skipping insertion in model container [2022-11-22 01:30:59,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:30:59" (3/3) ... [2022-11-22 01:30:59,672 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label48.c [2022-11-22 01:30:59,694 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:30:59,694 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:30:59,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:30:59,776 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@163e7eea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:30:59,777 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:30:59,784 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) [2022-11-22 01:30:59,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-22 01:30:59,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:30:59,798 INFO L195 NwaCegarLoop]: 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] [2022-11-22 01:30:59,799 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:30:59,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:30:59,809 INFO L85 PathProgramCache]: Analyzing trace with hash -104647992, now seen corresponding path program 1 times [2022-11-22 01:30:59,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:30:59,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887427522] [2022-11-22 01:30:59,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:30:59,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:31:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:31:00,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:31:00,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:31:00,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887427522] [2022-11-22 01:31:00,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887427522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:31:00,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:31:00,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:31:00,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563154962] [2022-11-22 01:31:00,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:31:00,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:31:00,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:31:00,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:31:00,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:31:00,468 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 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 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) [2022-11-22 01:31:01,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:31:01,046 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2022-11-22 01:31:01,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:31:01,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 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 [2022-11-22 01:31:01,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:31:01,066 INFO L225 Difference]: With dead ends: 224 [2022-11-22 01:31:01,066 INFO L226 Difference]: Without dead ends: 145 [2022-11-22 01:31:01,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:31:01,074 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 26 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:31:01,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 01:31:01,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-22 01:31:01,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-11-22 01:31:01,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7986111111111112) internal successors, (259), 144 states have internal predecessors, (259), 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) [2022-11-22 01:31:01,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2022-11-22 01:31:01,148 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2022-11-22 01:31:01,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:31:01,150 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2022-11-22 01:31:01,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 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) [2022-11-22 01:31:01,151 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2022-11-22 01:31:01,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-22 01:31:01,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:31:01,154 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:31:01,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:31:01,155 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:31:01,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:31:01,156 INFO L85 PathProgramCache]: Analyzing trace with hash -601801573, now seen corresponding path program 1 times [2022-11-22 01:31:01,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:31:01,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108672866] [2022-11-22 01:31:01,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:31:01,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:31:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:31:01,325 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:31:01,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:31:01,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108672866] [2022-11-22 01:31:01,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108672866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:31:01,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:31:01,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:31:01,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165060942] [2022-11-22 01:31:01,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:31:01,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:31:01,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:31:01,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:31:01,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:31:01,332 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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) [2022-11-22 01:31:01,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:31:01,758 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2022-11-22 01:31:01,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:31:01,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 77 [2022-11-22 01:31:01,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:31:01,760 INFO L225 Difference]: With dead ends: 431 [2022-11-22 01:31:01,761 INFO L226 Difference]: Without dead ends: 287 [2022-11-22 01:31:01,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:31:01,763 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 82 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:31:01,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 32 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:31:01,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-22 01:31:01,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-11-22 01:31:01,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.6363636363636365) internal successors, (468), 286 states have internal predecessors, (468), 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) [2022-11-22 01:31:01,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 468 transitions. [2022-11-22 01:31:01,785 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 468 transitions. Word has length 77 [2022-11-22 01:31:01,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:31:01,785 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 468 transitions. [2022-11-22 01:31:01,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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) [2022-11-22 01:31:01,786 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 468 transitions. [2022-11-22 01:31:01,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-22 01:31:01,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:31:01,800 INFO L195 NwaCegarLoop]: 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] [2022-11-22 01:31:01,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:31:01,800 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:31:01,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:31:01,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1164135143, now seen corresponding path program 1 times [2022-11-22 01:31:01,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:31:01,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255492158] [2022-11-22 01:31:01,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:31:01,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:31:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:31:02,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:31:02,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:31:02,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255492158] [2022-11-22 01:31:02,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255492158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:31:02,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:31:02,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:31:02,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095137304] [2022-11-22 01:31:02,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:31:02,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:31:02,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:31:02,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:31:02,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:31:02,347 INFO L87 Difference]: Start difference. First operand 287 states and 468 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) [2022-11-22 01:31:02,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:31:02,867 INFO L93 Difference]: Finished difference Result 784 states and 1255 transitions. [2022-11-22 01:31:02,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:31:02,868 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 [2022-11-22 01:31:02,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:31:02,870 INFO L225 Difference]: With dead ends: 784 [2022-11-22 01:31:02,870 INFO L226 Difference]: Without dead ends: 429 [2022-11-22 01:31:02,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:31:02,873 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 72 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:31:02,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 74 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 01:31:02,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-11-22 01:31:02,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2022-11-22 01:31:02,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.3014018691588785) internal successors, (557), 428 states have internal predecessors, (557), 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) [2022-11-22 01:31:02,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 557 transitions. [2022-11-22 01:31:02,901 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 557 transitions. Word has length 78 [2022-11-22 01:31:02,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:31:02,902 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 557 transitions. [2022-11-22 01:31:02,902 INFO L496 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) [2022-11-22 01:31:02,902 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 557 transitions. [2022-11-22 01:31:02,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-22 01:31:02,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:31:02,904 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:31:02,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:31:02,905 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:31:02,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:31:02,905 INFO L85 PathProgramCache]: Analyzing trace with hash -771913106, now seen corresponding path program 1 times [2022-11-22 01:31:02,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:31:02,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123610904] [2022-11-22 01:31:02,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:31:02,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:31:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:31:03,063 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 01:31:03,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:31:03,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123610904] [2022-11-22 01:31:03,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123610904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:31:03,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:31:03,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:31:03,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155238828] [2022-11-22 01:31:03,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:31:03,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:31:03,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:31:03,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:31:03,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:31:03,066 INFO L87 Difference]: Start difference. First operand 429 states and 557 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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) [2022-11-22 01:31:03,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:31:03,345 INFO L93 Difference]: Finished difference Result 857 states and 1138 transitions. [2022-11-22 01:31:03,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:31:03,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 83 [2022-11-22 01:31:03,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:31:03,347 INFO L225 Difference]: With dead ends: 857 [2022-11-22 01:31:03,348 INFO L226 Difference]: Without dead ends: 500 [2022-11-22 01:31:03,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:31:03,350 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 69 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:31:03,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 41 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:31:03,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-11-22 01:31:03,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2022-11-22 01:31:03,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.282565130260521) internal successors, (640), 499 states have internal predecessors, (640), 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) [2022-11-22 01:31:03,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 640 transitions. [2022-11-22 01:31:03,364 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 640 transitions. Word has length 83 [2022-11-22 01:31:03,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:31:03,364 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 640 transitions. [2022-11-22 01:31:03,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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) [2022-11-22 01:31:03,365 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 640 transitions. [2022-11-22 01:31:03,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-22 01:31:03,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:31:03,366 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:31:03,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:31:03,367 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:31:03,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:31:03,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1248264118, now seen corresponding path program 1 times [2022-11-22 01:31:03,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:31:03,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429008942] [2022-11-22 01:31:03,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:31:03,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:31:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:31:03,501 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 01:31:03,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:31:03,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429008942] [2022-11-22 01:31:03,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429008942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:31:03,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:31:03,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:31:03,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312842897] [2022-11-22 01:31:03,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:31:03,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:31:03,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:31:03,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:31:03,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:31:03,504 INFO L87 Difference]: Start difference. First operand 500 states and 640 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) [2022-11-22 01:31:03,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:31:03,801 INFO L93 Difference]: Finished difference Result 1283 states and 1651 transitions. [2022-11-22 01:31:03,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:31:03,802 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 92 [2022-11-22 01:31:03,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:31:03,805 INFO L225 Difference]: With dead ends: 1283 [2022-11-22 01:31:03,805 INFO L226 Difference]: Without dead ends: 855 [2022-11-22 01:31:03,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:31:03,807 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 74 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:31:03,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 15 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:31:03,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-11-22 01:31:03,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 642. [2022-11-22 01:31:03,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.2776911076443058) internal successors, (819), 641 states have internal predecessors, (819), 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) [2022-11-22 01:31:03,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 819 transitions. [2022-11-22 01:31:03,839 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 819 transitions. Word has length 92 [2022-11-22 01:31:03,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:31:03,840 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 819 transitions. [2022-11-22 01:31:03,840 INFO L496 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) [2022-11-22 01:31:03,840 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 819 transitions. [2022-11-22 01:31:03,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-22 01:31:03,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:31:03,851 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2022-11-22 01:31:03,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:31:03,851 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:31:03,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:31:03,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1552485061, now seen corresponding path program 1 times [2022-11-22 01:31:03,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:31:03,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623883968] [2022-11-22 01:31:03,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:31:03,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:31:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:31:04,031 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 01:31:04,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:31:04,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623883968] [2022-11-22 01:31:04,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623883968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:31:04,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:31:04,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:31:04,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147055596] [2022-11-22 01:31:04,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:31:04,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:31:04,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:31:04,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:31:04,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:31:04,034 INFO L87 Difference]: Start difference. First operand 642 states and 819 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2022-11-22 01:31:04,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:31:04,544 INFO L93 Difference]: Finished difference Result 1354 states and 1784 transitions. [2022-11-22 01:31:04,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:31:04,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 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 98 [2022-11-22 01:31:04,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:31:04,547 INFO L225 Difference]: With dead ends: 1354 [2022-11-22 01:31:04,547 INFO L226 Difference]: Without dead ends: 784 [2022-11-22 01:31:04,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:31:04,549 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 208 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:31:04,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 29 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 01:31:04,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-11-22 01:31:04,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 784. [2022-11-22 01:31:04,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.2669220945083015) internal successors, (992), 783 states have internal predecessors, (992), 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) [2022-11-22 01:31:04,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 992 transitions. [2022-11-22 01:31:04,570 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 992 transitions. Word has length 98 [2022-11-22 01:31:04,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:31:04,570 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 992 transitions. [2022-11-22 01:31:04,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2022-11-22 01:31:04,571 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 992 transitions. [2022-11-22 01:31:04,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-22 01:31:04,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:31:04,573 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:31:04,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:31:04,573 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:31:04,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:31:04,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1595249176, now seen corresponding path program 1 times [2022-11-22 01:31:04,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:31:04,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274313424] [2022-11-22 01:31:04,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:31:04,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:31:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:31:04,799 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 01:31:04,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:31:04,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274313424] [2022-11-22 01:31:04,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274313424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:31:04,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:31:04,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:31:04,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57426712] [2022-11-22 01:31:04,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:31:04,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:31:04,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:31:04,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:31:04,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:31:04,803 INFO L87 Difference]: Start difference. First operand 784 states and 992 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 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) [2022-11-22 01:31:05,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:31:05,310 INFO L93 Difference]: Finished difference Result 1780 states and 2274 transitions. [2022-11-22 01:31:05,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:31:05,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 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 112 [2022-11-22 01:31:05,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:31:05,314 INFO L225 Difference]: With dead ends: 1780 [2022-11-22 01:31:05,315 INFO L226 Difference]: Without dead ends: 1068 [2022-11-22 01:31:05,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:31:05,316 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 144 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:31:05,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 40 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 01:31:05,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-11-22 01:31:05,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 997. [2022-11-22 01:31:05,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.251004016064257) internal successors, (1246), 996 states have internal predecessors, (1246), 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) [2022-11-22 01:31:05,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1246 transitions. [2022-11-22 01:31:05,344 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1246 transitions. Word has length 112 [2022-11-22 01:31:05,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:31:05,345 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1246 transitions. [2022-11-22 01:31:05,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 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) [2022-11-22 01:31:05,345 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1246 transitions. [2022-11-22 01:31:05,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-22 01:31:05,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:31:05,349 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:31:05,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:31:05,349 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:31:05,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:31:05,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1252449629, now seen corresponding path program 1 times [2022-11-22 01:31:05,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:31:05,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803559010] [2022-11-22 01:31:05,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:31:05,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:31:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:31:05,588 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 01:31:05,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:31:05,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803559010] [2022-11-22 01:31:05,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803559010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:31:05,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:31:05,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:31:05,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682553001] [2022-11-22 01:31:05,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:31:05,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:31:05,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:31:05,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:31:05,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:31:05,591 INFO L87 Difference]: Start difference. First operand 997 states and 1246 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 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) [2022-11-22 01:31:05,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:31:05,998 INFO L93 Difference]: Finished difference Result 2064 states and 2571 transitions. [2022-11-22 01:31:05,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:31:05,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 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 129 [2022-11-22 01:31:05,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:31:06,003 INFO L225 Difference]: With dead ends: 2064 [2022-11-22 01:31:06,003 INFO L226 Difference]: Without dead ends: 1139 [2022-11-22 01:31:06,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:31:06,005 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 212 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:31:06,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 28 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:31:06,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-11-22 01:31:06,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 997. [2022-11-22 01:31:06,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.2389558232931728) internal successors, (1234), 996 states have internal predecessors, (1234), 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) [2022-11-22 01:31:06,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1234 transitions. [2022-11-22 01:31:06,058 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1234 transitions. Word has length 129 [2022-11-22 01:31:06,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:31:06,059 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1234 transitions. [2022-11-22 01:31:06,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 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) [2022-11-22 01:31:06,059 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1234 transitions. [2022-11-22 01:31:06,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-22 01:31:06,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:31:06,062 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-22 01:31:06,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 01:31:06,063 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:31:06,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:31:06,064 INFO L85 PathProgramCache]: Analyzing trace with hash 390811323, now seen corresponding path program 1 times [2022-11-22 01:31:06,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:31:06,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032876934] [2022-11-22 01:31:06,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:31:06,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:31:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:31:06,247 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-22 01:31:06,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:31:06,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032876934] [2022-11-22 01:31:06,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032876934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:31:06,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:31:06,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:31:06,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579292565] [2022-11-22 01:31:06,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:31:06,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:31:06,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:31:06,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:31:06,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:31:06,251 INFO L87 Difference]: Start difference. First operand 997 states and 1234 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2022-11-22 01:31:06,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:31:06,548 INFO L93 Difference]: Finished difference Result 2135 states and 2651 transitions. [2022-11-22 01:31:06,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:31:06,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 172 [2022-11-22 01:31:06,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:31:06,553 INFO L225 Difference]: With dead ends: 2135 [2022-11-22 01:31:06,553 INFO L226 Difference]: Without dead ends: 1210 [2022-11-22 01:31:06,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:31:06,558 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 26 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:31:06,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 113 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:31:06,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2022-11-22 01:31:06,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1139. [2022-11-22 01:31:06,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 1.2214411247803163) internal successors, (1390), 1138 states have internal predecessors, (1390), 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) [2022-11-22 01:31:06,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1390 transitions. [2022-11-22 01:31:06,593 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1390 transitions. Word has length 172 [2022-11-22 01:31:06,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:31:06,594 INFO L495 AbstractCegarLoop]: Abstraction has 1139 states and 1390 transitions. [2022-11-22 01:31:06,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2022-11-22 01:31:06,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1390 transitions. [2022-11-22 01:31:06,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-22 01:31:06,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:31:06,597 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-22 01:31:06,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 01:31:06,598 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:31:06,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:31:06,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1542400906, now seen corresponding path program 1 times [2022-11-22 01:31:06,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:31:06,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678462750] [2022-11-22 01:31:06,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:31:06,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:31:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:31:07,280 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 57 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:31:07,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:31:07,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678462750] [2022-11-22 01:31:07,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678462750] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:31:07,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043586342] [2022-11-22 01:31:07,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:31:07,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:31:07,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:31:07,287 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:31:07,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:31:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:31:07,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 01:31:07,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:31:07,790 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-22 01:31:07,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:31:07,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043586342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:31:07,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:31:07,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-11-22 01:31:07,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356525697] [2022-11-22 01:31:07,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:31:07,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:31:07,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:31:07,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:31:07,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:31:07,793 INFO L87 Difference]: Start difference. First operand 1139 states and 1390 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2022-11-22 01:31:08,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:31:08,082 INFO L93 Difference]: Finished difference Result 2277 states and 2779 transitions. [2022-11-22 01:31:08,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:31:08,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 175 [2022-11-22 01:31:08,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:31:08,087 INFO L225 Difference]: With dead ends: 2277 [2022-11-22 01:31:08,087 INFO L226 Difference]: Without dead ends: 1139 [2022-11-22 01:31:08,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:31:08,089 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:31:08,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 103 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:31:08,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-11-22 01:31:08,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1068. [2022-11-22 01:31:08,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1067 states have (on average 1.1855670103092784) internal successors, (1265), 1067 states have internal predecessors, (1265), 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) [2022-11-22 01:31:08,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1265 transitions. [2022-11-22 01:31:08,115 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1265 transitions. Word has length 175 [2022-11-22 01:31:08,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:31:08,116 INFO L495 AbstractCegarLoop]: Abstraction has 1068 states and 1265 transitions. [2022-11-22 01:31:08,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2022-11-22 01:31:08,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1265 transitions. [2022-11-22 01:31:08,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-22 01:31:08,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:31:08,120 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-22 01:31:08,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 01:31:08,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:31:08,325 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:31:08,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:31:08,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1537690244, now seen corresponding path program 1 times [2022-11-22 01:31:08,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:31:08,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052127990] [2022-11-22 01:31:08,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:31:08,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:31:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:31:08,919 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 64 proven. 119 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-22 01:31:08,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:31:08,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052127990] [2022-11-22 01:31:08,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052127990] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:31:08,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317762752] [2022-11-22 01:31:08,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:31:08,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:31:08,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:31:08,925 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:31:08,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:31:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:31:09,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 01:31:09,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:31:09,210 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-22 01:31:09,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:31:09,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317762752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:31:09,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:31:09,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-22 01:31:09,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012142571] [2022-11-22 01:31:09,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:31:09,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:31:09,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:31:09,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:31:09,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:31:09,213 INFO L87 Difference]: Start difference. First operand 1068 states and 1265 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2022-11-22 01:31:09,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:31:09,504 INFO L93 Difference]: Finished difference Result 2419 states and 2846 transitions. [2022-11-22 01:31:09,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:31:09,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 194 [2022-11-22 01:31:09,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:31:09,509 INFO L225 Difference]: With dead ends: 2419 [2022-11-22 01:31:09,509 INFO L226 Difference]: Without dead ends: 1068 [2022-11-22 01:31:09,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:31:09,511 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:31:09,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 106 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:31:09,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-11-22 01:31:09,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 997. [2022-11-22 01:31:09,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.1275100401606426) internal successors, (1123), 996 states have internal predecessors, (1123), 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) [2022-11-22 01:31:09,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1123 transitions. [2022-11-22 01:31:09,536 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1123 transitions. Word has length 194 [2022-11-22 01:31:09,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:31:09,537 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1123 transitions. [2022-11-22 01:31:09,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2022-11-22 01:31:09,537 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1123 transitions. [2022-11-22 01:31:09,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-22 01:31:09,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:31:09,541 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 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, 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] [2022-11-22 01:31:09,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:31:09,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:31:09,747 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:31:09,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:31:09,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1994969092, now seen corresponding path program 1 times [2022-11-22 01:31:09,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:31:09,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887321686] [2022-11-22 01:31:09,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:31:09,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:31:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:31:10,325 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 69 proven. 124 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-22 01:31:10,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:31:10,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887321686] [2022-11-22 01:31:10,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887321686] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:31:10,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206266559] [2022-11-22 01:31:10,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:31:10,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:31:10,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:31:10,331 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:31:10,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:31:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:31:10,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 01:31:10,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:31:10,646 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-11-22 01:31:10,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:31:10,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206266559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:31:10,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:31:10,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-22 01:31:10,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566613975] [2022-11-22 01:31:10,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:31:10,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:31:10,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:31:10,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:31:10,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:31:10,650 INFO L87 Difference]: Start difference. First operand 997 states and 1123 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2022-11-22 01:31:10,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:31:10,964 INFO L93 Difference]: Finished difference Result 1993 states and 2263 transitions. [2022-11-22 01:31:10,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:31:10,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 199 [2022-11-22 01:31:10,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:31:10,969 INFO L225 Difference]: With dead ends: 1993 [2022-11-22 01:31:10,969 INFO L226 Difference]: Without dead ends: 1068 [2022-11-22 01:31:10,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:31:10,971 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 5 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:31:10,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 97 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:31:10,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-11-22 01:31:10,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 926. [2022-11-22 01:31:10,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.1156756756756756) internal successors, (1032), 925 states have internal predecessors, (1032), 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) [2022-11-22 01:31:10,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1032 transitions. [2022-11-22 01:31:10,995 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1032 transitions. Word has length 199 [2022-11-22 01:31:10,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:31:10,996 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1032 transitions. [2022-11-22 01:31:10,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2022-11-22 01:31:10,996 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1032 transitions. [2022-11-22 01:31:11,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-22 01:31:11,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:31:11,000 INFO L195 NwaCegarLoop]: 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, 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] [2022-11-22 01:31:11,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-22 01:31:11,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-22 01:31:11,207 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:31:11,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:31:11,208 INFO L85 PathProgramCache]: Analyzing trace with hash 290641695, now seen corresponding path program 1 times [2022-11-22 01:31:11,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:31:11,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461507768] [2022-11-22 01:31:11,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:31:11,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:31:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:31:11,802 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 201 proven. 127 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-22 01:31:11,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:31:11,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461507768] [2022-11-22 01:31:11,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461507768] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:31:11,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470407862] [2022-11-22 01:31:11,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:31:11,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:31:11,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:31:11,807 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:31:11,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 01:31:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:31:11,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 01:31:11,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:31:12,083 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-22 01:31:12,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:31:12,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470407862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:31:12,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:31:12,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-11-22 01:31:12,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561688935] [2022-11-22 01:31:12,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:31:12,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:31:12,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:31:12,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:31:12,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:31:12,089 INFO L87 Difference]: Start difference. First operand 926 states and 1032 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) [2022-11-22 01:31:12,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:31:12,388 INFO L93 Difference]: Finished difference Result 1991 states and 2234 transitions. [2022-11-22 01:31:12,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:31:12,389 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 237 [2022-11-22 01:31:12,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:31:12,389 INFO L225 Difference]: With dead ends: 1991 [2022-11-22 01:31:12,390 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 01:31:12,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:31:12,392 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 2 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:31:12,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 110 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:31:12,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 01:31:12,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 01:31:12,394 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) [2022-11-22 01:31:12,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 01:31:12,394 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 237 [2022-11-22 01:31:12,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:31:12,394 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 01:31:12,395 INFO L496 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) [2022-11-22 01:31:12,395 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 01:31:12,395 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 01:31:12,397 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-22 01:31:12,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 01:31:12,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-22 01:31:12,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-22 01:31:13,793 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2022-11-22 01:31:13,793 INFO L899 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2022-11-22 01:31:13,794 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2022-11-22 01:31:13,794 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2022-11-22 01:31:13,794 INFO L899 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2022-11-22 01:31:13,794 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2022-11-22 01:31:13,794 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2022-11-22 01:31:13,794 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2022-11-22 01:31:13,794 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2022-11-22 01:31:13,794 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2022-11-22 01:31:13,794 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2022-11-22 01:31:13,794 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2022-11-22 01:31:13,795 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2022-11-22 01:31:13,795 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2022-11-22 01:31:13,795 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2022-11-22 01:31:13,795 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2022-11-22 01:31:13,795 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2022-11-22 01:31:13,795 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2022-11-22 01:31:13,795 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2022-11-22 01:31:13,795 INFO L899 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2022-11-22 01:31:13,795 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2022-11-22 01:31:13,795 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2022-11-22 01:31:13,796 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2022-11-22 01:31:13,796 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2022-11-22 01:31:13,796 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2022-11-22 01:31:13,796 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2022-11-22 01:31:13,796 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2022-11-22 01:31:13,796 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2022-11-22 01:31:13,796 INFO L899 garLoopResultBuilder]: For program point L545-1(lines 40 585) no Hoare annotation was computed. [2022-11-22 01:31:13,796 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2022-11-22 01:31:13,796 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2022-11-22 01:31:13,796 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2022-11-22 01:31:13,797 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2022-11-22 01:31:13,797 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2022-11-22 01:31:13,797 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2022-11-22 01:31:13,797 INFO L899 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2022-11-22 01:31:13,797 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2022-11-22 01:31:13,797 INFO L899 garLoopResultBuilder]: For program point L548-1(lines 40 585) no Hoare annotation was computed. [2022-11-22 01:31:13,797 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-22 01:31:13,797 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2022-11-22 01:31:13,797 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2022-11-22 01:31:13,797 INFO L899 garLoopResultBuilder]: For program point L549(line 549) no Hoare annotation was computed. [2022-11-22 01:31:13,797 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2022-11-22 01:31:13,798 INFO L895 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (<= ~a20~0 0)) (.cse4 (<= 15 ~a8~0)) (.cse2 (<= ~a17~0 0)) (.cse5 (<= ~a8~0 13)) (.cse9 (<= ~a16~0 5)) (.cse1 (= ~a16~0 6)) (.cse10 (= ~a12~0 8)) (.cse3 (= ~a21~0 1)) (.cse6 (= ~a17~0 1)) (.cse7 (<= ~a16~0 4)) (.cse8 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse5 .cse6 .cse7) (and .cse5 .cse7 .cse8) (and .cse0 .cse1 .cse3 .cse6 .cse4) (and .cse0 .cse2 .cse3 .cse9) (and .cse10 .cse3 .cse6 .cse9 .cse8 .cse4) (and .cse2 .cse3 .cse9 .cse8) (and .cse2 .cse3 .cse8 .cse4) (and .cse5 .cse6 .cse8) (and .cse0 .cse5 .cse3 .cse9) (and .cse0 .cse3 .cse6 .cse9 .cse4) (and .cse5 .cse2 .cse8) (and .cse5 .cse3 .cse9 .cse8) (and .cse10 .cse1 .cse3 .cse6 .cse8) (and .cse10 .cse3 .cse6 .cse7 .cse8))) [2022-11-22 01:31:13,798 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2022-11-22 01:31:13,798 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2022-11-22 01:31:13,798 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2022-11-22 01:31:13,798 INFO L899 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2022-11-22 01:31:13,799 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2022-11-22 01:31:13,799 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2022-11-22 01:31:13,799 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2022-11-22 01:31:13,799 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-22 01:31:13,799 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2022-11-22 01:31:13,799 INFO L902 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2022-11-22 01:31:13,799 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2022-11-22 01:31:13,799 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2022-11-22 01:31:13,799 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2022-11-22 01:31:13,799 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2022-11-22 01:31:13,800 INFO L899 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2022-11-22 01:31:13,800 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2022-11-22 01:31:13,800 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2022-11-22 01:31:13,800 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2022-11-22 01:31:13,800 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2022-11-22 01:31:13,800 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2022-11-22 01:31:13,800 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2022-11-22 01:31:13,800 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2022-11-22 01:31:13,800 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2022-11-22 01:31:13,801 INFO L895 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (<= ~a20~0 0)) (.cse4 (<= 15 ~a8~0)) (.cse2 (<= ~a17~0 0)) (.cse5 (<= ~a8~0 13)) (.cse9 (<= ~a16~0 5)) (.cse1 (= ~a16~0 6)) (.cse10 (= ~a12~0 8)) (.cse3 (= ~a21~0 1)) (.cse6 (= ~a17~0 1)) (.cse7 (<= ~a16~0 4)) (.cse8 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse5 .cse6 .cse7) (and .cse5 .cse7 .cse8) (and .cse0 .cse1 .cse3 .cse6 .cse4) (and .cse0 .cse2 .cse3 .cse9) (and .cse10 .cse3 .cse6 .cse9 .cse8 .cse4) (and .cse2 .cse3 .cse9 .cse8) (and .cse2 .cse3 .cse8 .cse4) (and .cse5 .cse6 .cse8) (and .cse0 .cse5 .cse3 .cse9) (and .cse0 .cse3 .cse6 .cse9 .cse4) (and .cse5 .cse2 .cse8) (and .cse5 .cse3 .cse9 .cse8) (and .cse10 .cse1 .cse3 .cse6 .cse8) (and .cse10 .cse3 .cse6 .cse7 .cse8))) [2022-11-22 01:31:13,801 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2022-11-22 01:31:13,801 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 549) no Hoare annotation was computed. [2022-11-22 01:31:13,801 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2022-11-22 01:31:13,801 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2022-11-22 01:31:13,801 INFO L899 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2022-11-22 01:31:13,801 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2022-11-22 01:31:13,801 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2022-11-22 01:31:13,802 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2022-11-22 01:31:13,806 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:31:13,808 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 01:31:13,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:31:13 BoogieIcfgContainer [2022-11-22 01:31:13,848 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 01:31:13,849 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 01:31:13,849 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 01:31:13,849 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 01:31:13,849 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:30:59" (3/4) ... [2022-11-22 01:31:13,852 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 01:31:13,874 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 110 nodes and edges [2022-11-22 01:31:13,881 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-11-22 01:31:13,882 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-22 01:31:13,883 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 01:31:14,005 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 01:31:14,006 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 01:31:14,006 INFO L158 Benchmark]: Toolchain (without parser) took 16851.06ms. Allocated memory was 142.6MB in the beginning and 327.2MB in the end (delta: 184.5MB). Free memory was 110.9MB in the beginning and 142.5MB in the end (delta: -31.6MB). Peak memory consumption was 154.3MB. Max. memory is 16.1GB. [2022-11-22 01:31:14,007 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 115.3MB. Free memory is still 69.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:31:14,007 INFO L158 Benchmark]: CACSL2BoogieTranslator took 682.36ms. Allocated memory is still 142.6MB. Free memory was 110.3MB in the beginning and 82.4MB in the end (delta: 27.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-22 01:31:14,008 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.59ms. Allocated memory is still 142.6MB. Free memory was 82.4MB in the beginning and 76.7MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-22 01:31:14,008 INFO L158 Benchmark]: Boogie Preprocessor took 63.79ms. Allocated memory is still 142.6MB. Free memory was 76.7MB in the beginning and 72.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 01:31:14,009 INFO L158 Benchmark]: RCFGBuilder took 1679.58ms. Allocated memory was 142.6MB in the beginning and 188.7MB in the end (delta: 46.1MB). Free memory was 72.5MB in the beginning and 120.3MB in the end (delta: -47.8MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. [2022-11-22 01:31:14,009 INFO L158 Benchmark]: TraceAbstraction took 14187.89ms. Allocated memory was 188.7MB in the beginning and 327.2MB in the end (delta: 138.4MB). Free memory was 120.3MB in the beginning and 153.2MB in the end (delta: -32.9MB). Peak memory consumption was 161.1MB. Max. memory is 16.1GB. [2022-11-22 01:31:14,010 INFO L158 Benchmark]: Witness Printer took 157.34ms. Allocated memory is still 327.2MB. Free memory was 153.2MB in the beginning and 142.5MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 01:31:14,015 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 115.3MB. Free memory is still 69.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 682.36ms. Allocated memory is still 142.6MB. Free memory was 110.3MB in the beginning and 82.4MB in the end (delta: 27.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.59ms. Allocated memory is still 142.6MB. Free memory was 82.4MB in the beginning and 76.7MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.79ms. Allocated memory is still 142.6MB. Free memory was 76.7MB in the beginning and 72.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1679.58ms. Allocated memory was 142.6MB in the beginning and 188.7MB in the end (delta: 46.1MB). Free memory was 72.5MB in the beginning and 120.3MB in the end (delta: -47.8MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. * TraceAbstraction took 14187.89ms. Allocated memory was 188.7MB in the beginning and 327.2MB in the end (delta: 138.4MB). Free memory was 120.3MB in the beginning and 153.2MB in the end (delta: -32.9MB). Peak memory consumption was 161.1MB. Max. memory is 16.1GB. * Witness Printer took 157.34ms. Allocated memory is still 327.2MB. Free memory was 153.2MB in the beginning and 142.5MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 549]: 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: 14.1s, OverallIterations: 13, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 941 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 941 mSDsluCounter, 817 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 61 mSDsCounter, 721 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3068 IncrementalHoareTripleChecker+Invalid, 3789 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 721 mSolverCounterUnsat, 756 mSDtfsCounter, 3068 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 843 GetRequests, 812 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1139occurred in iteration=9, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 781 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 47 NumberOfFragments, 417 HoareAnnotationTreeSize, 3 FomulaSimplifications, 228 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 3 FomulaSimplificationsInter, 2196 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 2522 NumberOfCodeBlocks, 2522 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 2505 ConstructedInterpolants, 0 QuantifiedInterpolants, 13640 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1795 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 17 InterpolantComputations, 13 PerfectInterpolantSequences, 1820/2288 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: (((((((((((((((((a20 <= 0 && a16 == 6) && a17 <= 0) && a21 == 1) && 15 <= a8) || (((a20 <= 0 && a8 <= 13) && a17 == 1) && a16 <= 4)) || ((a8 <= 13 && a16 <= 4) && a20 == 1)) || ((((a20 <= 0 && a16 == 6) && a21 == 1) && a17 == 1) && 15 <= a8)) || (((a20 <= 0 && a17 <= 0) && a21 == 1) && a16 <= 5)) || (((((a12 == 8 && a21 == 1) && a17 == 1) && a16 <= 5) && a20 == 1) && 15 <= a8)) || (((a17 <= 0 && a21 == 1) && a16 <= 5) && a20 == 1)) || (((a17 <= 0 && a21 == 1) && a20 == 1) && 15 <= a8)) || ((a8 <= 13 && a17 == 1) && a20 == 1)) || (((a20 <= 0 && a8 <= 13) && a21 == 1) && a16 <= 5)) || ((((a20 <= 0 && a21 == 1) && a17 == 1) && a16 <= 5) && 15 <= a8)) || ((a8 <= 13 && a17 <= 0) && a20 == 1)) || (((a8 <= 13 && a21 == 1) && a16 <= 5) && a20 == 1)) || ((((a12 == 8 && a16 == 6) && a21 == 1) && a17 == 1) && a20 == 1)) || ((((a12 == 8 && a21 == 1) && a17 == 1) && a16 <= 4) && a20 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((((((((((((a20 <= 0 && a16 == 6) && a17 <= 0) && a21 == 1) && 15 <= a8) || (((a20 <= 0 && a8 <= 13) && a17 == 1) && a16 <= 4)) || ((a8 <= 13 && a16 <= 4) && a20 == 1)) || ((((a20 <= 0 && a16 == 6) && a21 == 1) && a17 == 1) && 15 <= a8)) || (((a20 <= 0 && a17 <= 0) && a21 == 1) && a16 <= 5)) || (((((a12 == 8 && a21 == 1) && a17 == 1) && a16 <= 5) && a20 == 1) && 15 <= a8)) || (((a17 <= 0 && a21 == 1) && a16 <= 5) && a20 == 1)) || (((a17 <= 0 && a21 == 1) && a20 == 1) && 15 <= a8)) || ((a8 <= 13 && a17 == 1) && a20 == 1)) || (((a20 <= 0 && a8 <= 13) && a21 == 1) && a16 <= 5)) || ((((a20 <= 0 && a21 == 1) && a17 == 1) && a16 <= 5) && 15 <= a8)) || ((a8 <= 13 && a17 <= 0) && a20 == 1)) || (((a8 <= 13 && a21 == 1) && a16 <= 5) && a20 == 1)) || ((((a12 == 8 && a16 == 6) && a21 == 1) && a17 == 1) && a20 == 1)) || ((((a12 == 8 && a21 == 1) && a17 == 1) && a16 <= 4) && a20 == 1) RESULT: Ultimate proved your program to be correct! [2022-11-22 01:31:14,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74e53ca-2141-4a05-b1a4-28cc02d80edc/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE