./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bb44ca-077e-44e2-8bca-ef1759af3b8c/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bb44ca-077e-44e2-8bca-ef1759af3b8c/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bb44ca-077e-44e2-8bca-ef1759af3b8c/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bb44ca-077e-44e2-8bca-ef1759af3b8c/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bb44ca-077e-44e2-8bca-ef1759af3b8c/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bb44ca-077e-44e2-8bca-ef1759af3b8c/bin/utaipan-gh47qXpMRh --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 2d0b9c4fc8b0005fb250fdf1ff8e25835b95e676b1936e4f5fe1cf72245ee5f5 --- 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-2329fc7 [2022-12-14 09:12:44,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:12:44,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:12:44,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:12:44,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:12:44,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:12:44,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:12:44,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:12:44,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:12:44,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:12:44,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:12:44,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:12:44,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:12:44,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:12:44,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:12:44,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:12:44,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:12:44,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:12:44,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:12:44,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:12:44,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:12:44,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:12:44,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:12:44,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:12:44,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:12:44,765 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:12:44,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:12:44,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:12:44,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:12:44,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:12:44,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:12:44,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:12:44,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:12:44,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:12:44,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:12:44,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:12:44,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:12:44,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:12:44,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:12:44,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:12:44,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:12:44,772 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bb44ca-077e-44e2-8bca-ef1759af3b8c/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 09:12:44,787 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:12:44,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:12:44,787 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:12:44,792 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:12:44,793 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:12:44,793 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:12:44,793 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:12:44,793 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:12:44,793 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:12:44,793 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 09:12:44,794 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:12:44,794 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:12:44,794 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 09:12:44,794 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 09:12:44,794 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:12:44,794 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 09:12:44,795 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 09:12:44,795 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 09:12:44,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:12:44,795 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 09:12:44,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 09:12:44,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 09:12:44,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:12:44,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:12:44,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:12:44,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:12:44,797 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 09:12:44,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:12:44,797 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:12:44,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:12:44,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:12:44,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:12:44,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:12:44,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:12:44,798 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 09:12:44,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:12:44,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:12:44,798 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 09:12:44,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 09:12:44,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:12:44,799 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:12:44,799 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_68bb44ca-077e-44e2-8bca-ef1759af3b8c/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bb44ca-077e-44e2-8bca-ef1759af3b8c/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d0b9c4fc8b0005fb250fdf1ff8e25835b95e676b1936e4f5fe1cf72245ee5f5 [2022-12-14 09:12:44,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:12:44,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:12:44,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:12:44,984 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:12:44,985 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:12:44,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bb44ca-077e-44e2-8bca-ef1759af3b8c/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2022-12-14 09:12:47,583 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:12:47,737 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:12:47,738 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bb44ca-077e-44e2-8bca-ef1759af3b8c/sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2022-12-14 09:12:47,747 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bb44ca-077e-44e2-8bca-ef1759af3b8c/bin/utaipan-gh47qXpMRh/data/43eef2044/75b2df29d6574a47b718bf96915b13ad/FLAG83c6e1bab [2022-12-14 09:12:47,758 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bb44ca-077e-44e2-8bca-ef1759af3b8c/bin/utaipan-gh47qXpMRh/data/43eef2044/75b2df29d6574a47b718bf96915b13ad [2022-12-14 09:12:47,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:12:47,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:12:47,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:12:47,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:12:47,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:12:47,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:12:47" (1/1) ... [2022-12-14 09:12:47,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6558d5e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:12:47, skipping insertion in model container [2022-12-14 09:12:47,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:12:47" (1/1) ... [2022-12-14 09:12:47,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:12:47,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:12:47,903 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_68bb44ca-077e-44e2-8bca-ef1759af3b8c/sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2022-12-14 09:12:48,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:12:48,014 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:12:48,023 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_68bb44ca-077e-44e2-8bca-ef1759af3b8c/sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2022-12-14 09:12:48,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:12:48,064 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:12:48,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:12:48 WrapperNode [2022-12-14 09:12:48,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:12:48,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:12:48,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:12:48,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:12:48,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:12:48" (1/1) ... [2022-12-14 09:12:48,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:12:48" (1/1) ... [2022-12-14 09:12:48,095 INFO L138 Inliner]: procedures = 163, calls = 52, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 104 [2022-12-14 09:12:48,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:12:48,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:12:48,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:12:48,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:12:48,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:12:48" (1/1) ... [2022-12-14 09:12:48,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:12:48" (1/1) ... [2022-12-14 09:12:48,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:12:48" (1/1) ... [2022-12-14 09:12:48,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:12:48" (1/1) ... [2022-12-14 09:12:48,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:12:48" (1/1) ... [2022-12-14 09:12:48,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:12:48" (1/1) ... [2022-12-14 09:12:48,112 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:12:48" (1/1) ... [2022-12-14 09:12:48,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:12:48" (1/1) ... [2022-12-14 09:12:48,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:12:48,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:12:48,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:12:48,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:12:48,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:12:48" (1/1) ... [2022-12-14 09:12:48,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:12:48,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bb44ca-077e-44e2-8bca-ef1759af3b8c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:12:48,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bb44ca-077e-44e2-8bca-ef1759af3b8c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:12:48,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bb44ca-077e-44e2-8bca-ef1759af3b8c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:12:48,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 09:12:48,173 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-12-14 09:12:48,173 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-12-14 09:12:48,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 09:12:48,174 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-14 09:12:48,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 09:12:48,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 09:12:48,174 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-14 09:12:48,174 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-14 09:12:48,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 09:12:48,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 09:12:48,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:12:48,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:12:48,175 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 09:12:48,275 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:12:48,276 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:12:48,523 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:12:48,530 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:12:48,530 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 09:12:48,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:12:48 BoogieIcfgContainer [2022-12-14 09:12:48,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:12:48,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:12:48,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:12:48,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:12:48,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:12:47" (1/3) ... [2022-12-14 09:12:48,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d8011a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:12:48, skipping insertion in model container [2022-12-14 09:12:48,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:12:48" (2/3) ... [2022-12-14 09:12:48,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d8011a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:12:48, skipping insertion in model container [2022-12-14 09:12:48,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:12:48" (3/3) ... [2022-12-14 09:12:48,539 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2022-12-14 09:12:48,546 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 09:12:48,555 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:12:48,555 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-14 09:12:48,555 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 09:12:48,607 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-14 09:12:48,634 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 09:12:48,645 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 159 transitions, 334 flow [2022-12-14 09:12:48,647 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 159 transitions, 334 flow [2022-12-14 09:12:48,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 159 transitions, 334 flow [2022-12-14 09:12:48,697 INFO L130 PetriNetUnfolder]: 4/157 cut-off events. [2022-12-14 09:12:48,697 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-14 09:12:48,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 157 events. 4/157 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 136 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2022-12-14 09:12:48,705 INFO L119 LiptonReduction]: Number of co-enabled transitions 5364 [2022-12-14 09:12:52,083 INFO L134 LiptonReduction]: Checked pairs total: 17168 [2022-12-14 09:12:52,083 INFO L136 LiptonReduction]: Total number of compositions: 143 [2022-12-14 09:12:52,091 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 53 places, 50 transitions, 116 flow [2022-12-14 09:12:52,166 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1478 states, 1474 states have (on average 2.881953867028494) internal successors, (4248), 1477 states have internal predecessors, (4248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:52,183 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:12:52,189 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;@b962eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:12:52,189 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-14 09:12:52,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 1478 states, 1474 states have (on average 2.881953867028494) internal successors, (4248), 1477 states have internal predecessors, (4248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:52,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 09:12:52,200 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:12:52,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 09:12:52,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 09:12:52,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:12:52,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1101172260, now seen corresponding path program 1 times [2022-12-14 09:12:52,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:12:52,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811624723] [2022-12-14 09:12:52,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:12:52,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:12:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:12:52,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:12:52,365 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:12:52,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811624723] [2022-12-14 09:12:52,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811624723] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:12:52,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:12:52,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:12:52,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584575008] [2022-12-14 09:12:52,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:12:52,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 09:12:52,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:12:52,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 09:12:52,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 09:12:52,390 INFO L87 Difference]: Start difference. First operand has 1478 states, 1474 states have (on average 2.881953867028494) internal successors, (4248), 1477 states have internal predecessors, (4248), 0 states have call successors, (0), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:52,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:12:52,463 INFO L93 Difference]: Finished difference Result 1478 states and 4005 transitions. [2022-12-14 09:12:52,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 09:12:52,464 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-12-14 09:12:52,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:12:52,480 INFO L225 Difference]: With dead ends: 1478 [2022-12-14 09:12:52,480 INFO L226 Difference]: Without dead ends: 1478 [2022-12-14 09:12:52,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 09:12:52,483 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:12:52,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:12:52,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2022-12-14 09:12:52,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1478. [2022-12-14 09:12:52,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1474 states have (on average 2.7170963364993215) internal successors, (4005), 1477 states have internal predecessors, (4005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:52,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 4005 transitions. [2022-12-14 09:12:52,559 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 4005 transitions. Word has length 6 [2022-12-14 09:12:52,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:12:52,560 INFO L495 AbstractCegarLoop]: Abstraction has 1478 states and 4005 transitions. [2022-12-14 09:12:52,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:52,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 4005 transitions. [2022-12-14 09:12:52,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 09:12:52,560 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:12:52,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:12:52,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 09:12:52,561 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 09:12:52,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:12:52,561 INFO L85 PathProgramCache]: Analyzing trace with hash 223341183, now seen corresponding path program 1 times [2022-12-14 09:12:52,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:12:52,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465570789] [2022-12-14 09:12:52,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:12:52,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:12:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:12:52,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:12:52,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:12:52,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465570789] [2022-12-14 09:12:52,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465570789] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:12:52,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:12:52,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 09:12:52,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797856388] [2022-12-14 09:12:52,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:12:52,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:12:52,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:12:52,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:12:52,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:12:52,677 INFO L87 Difference]: Start difference. First operand 1478 states and 4005 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:52,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:12:52,744 INFO L93 Difference]: Finished difference Result 1397 states and 3771 transitions. [2022-12-14 09:12:52,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:12:52,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2022-12-14 09:12:52,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:12:52,749 INFO L225 Difference]: With dead ends: 1397 [2022-12-14 09:12:52,749 INFO L226 Difference]: Without dead ends: 1397 [2022-12-14 09:12:52,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:12:52,750 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 22 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:12:52,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:12:52,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1397 states. [2022-12-14 09:12:52,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1397 to 1397. [2022-12-14 09:12:52,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1393 states have (on average 2.7071069633883704) internal successors, (3771), 1396 states have internal predecessors, (3771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:52,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 3771 transitions. [2022-12-14 09:12:52,778 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 3771 transitions. Word has length 7 [2022-12-14 09:12:52,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:12:52,779 INFO L495 AbstractCegarLoop]: Abstraction has 1397 states and 3771 transitions. [2022-12-14 09:12:52,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:52,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 3771 transitions. [2022-12-14 09:12:52,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 09:12:52,780 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:12:52,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:12:52,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 09:12:52,780 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 09:12:52,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:12:52,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1615540911, now seen corresponding path program 1 times [2022-12-14 09:12:52,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:12:52,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142126587] [2022-12-14 09:12:52,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:12:52,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:12:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:12:52,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:12:52,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:12:52,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142126587] [2022-12-14 09:12:52,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142126587] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:12:52,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:12:52,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:12:52,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774058171] [2022-12-14 09:12:52,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:12:52,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 09:12:52,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:12:52,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 09:12:52,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:12:52,941 INFO L87 Difference]: Start difference. First operand 1397 states and 3771 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:53,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:12:53,032 INFO L93 Difference]: Finished difference Result 697 states and 1427 transitions. [2022-12-14 09:12:53,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 09:12:53,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-12-14 09:12:53,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:12:53,036 INFO L225 Difference]: With dead ends: 697 [2022-12-14 09:12:53,036 INFO L226 Difference]: Without dead ends: 697 [2022-12-14 09:12:53,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:12:53,037 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 64 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:12:53,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 2 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:12:53,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-12-14 09:12:53,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 664. [2022-12-14 09:12:53,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 659 states have (on average 2.0971168437025796) internal successors, (1382), 663 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:53,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1382 transitions. [2022-12-14 09:12:53,050 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1382 transitions. Word has length 10 [2022-12-14 09:12:53,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:12:53,050 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 1382 transitions. [2022-12-14 09:12:53,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:53,051 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1382 transitions. [2022-12-14 09:12:53,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 09:12:53,052 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:12:53,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:12:53,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 09:12:53,052 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 09:12:53,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:12:53,053 INFO L85 PathProgramCache]: Analyzing trace with hash -251929694, now seen corresponding path program 1 times [2022-12-14 09:12:53,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:12:53,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200150919] [2022-12-14 09:12:53,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:12:53,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:12:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:12:53,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:12:53,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:12:53,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200150919] [2022-12-14 09:12:53,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200150919] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:12:53,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:12:53,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 09:12:53,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105743967] [2022-12-14 09:12:53,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:12:53,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:12:53,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:12:53,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:12:53,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:12:53,118 INFO L87 Difference]: Start difference. First operand 664 states and 1382 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:53,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:12:53,173 INFO L93 Difference]: Finished difference Result 658 states and 1370 transitions. [2022-12-14 09:12:53,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:12:53,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2022-12-14 09:12:53,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:12:53,176 INFO L225 Difference]: With dead ends: 658 [2022-12-14 09:12:53,176 INFO L226 Difference]: Without dead ends: 658 [2022-12-14 09:12:53,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:12:53,177 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 17 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:12:53,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:12:53,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-12-14 09:12:53,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2022-12-14 09:12:53,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 653 states have (on average 2.098009188361409) internal successors, (1370), 657 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:53,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1370 transitions. [2022-12-14 09:12:53,189 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1370 transitions. Word has length 14 [2022-12-14 09:12:53,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:12:53,189 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 1370 transitions. [2022-12-14 09:12:53,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:53,189 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1370 transitions. [2022-12-14 09:12:53,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 09:12:53,190 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:12:53,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:12:53,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 09:12:53,190 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 09:12:53,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:12:53,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1313384224, now seen corresponding path program 1 times [2022-12-14 09:12:53,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:12:53,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507822890] [2022-12-14 09:12:53,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:12:53,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:12:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:12:53,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:12:53,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:12:53,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507822890] [2022-12-14 09:12:53,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507822890] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:12:53,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:12:53,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:12:53,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769932829] [2022-12-14 09:12:53,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:12:53,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 09:12:53,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:12:53,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 09:12:53,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:12:53,297 INFO L87 Difference]: Start difference. First operand 658 states and 1370 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:53,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:12:53,473 INFO L93 Difference]: Finished difference Result 642 states and 1305 transitions. [2022-12-14 09:12:53,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 09:12:53,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2022-12-14 09:12:53,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:12:53,476 INFO L225 Difference]: With dead ends: 642 [2022-12-14 09:12:53,476 INFO L226 Difference]: Without dead ends: 566 [2022-12-14 09:12:53,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:12:53,477 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 100 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 09:12:53,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 10 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 09:12:53,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-12-14 09:12:53,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2022-12-14 09:12:53,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 561 states have (on average 1.9982174688057042) internal successors, (1121), 565 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:53,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 1121 transitions. [2022-12-14 09:12:53,492 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 1121 transitions. Word has length 15 [2022-12-14 09:12:53,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:12:53,493 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 1121 transitions. [2022-12-14 09:12:53,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:53,493 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 1121 transitions. [2022-12-14 09:12:53,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 09:12:53,494 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:12:53,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:12:53,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 09:12:53,494 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 09:12:53,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:12:53,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1882271381, now seen corresponding path program 1 times [2022-12-14 09:12:53,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:12:53,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276317874] [2022-12-14 09:12:53,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:12:53,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:12:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:12:53,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:12:53,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:12:53,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276317874] [2022-12-14 09:12:53,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276317874] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:12:53,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:12:53,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:12:53,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074186914] [2022-12-14 09:12:53,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:12:53,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:12:53,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:12:53,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:12:53,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:12:53,575 INFO L87 Difference]: Start difference. First operand 566 states and 1121 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:53,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:12:53,642 INFO L93 Difference]: Finished difference Result 610 states and 1017 transitions. [2022-12-14 09:12:53,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:12:53,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2022-12-14 09:12:53,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:12:53,644 INFO L225 Difference]: With dead ends: 610 [2022-12-14 09:12:53,644 INFO L226 Difference]: Without dead ends: 596 [2022-12-14 09:12:53,644 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 [2022-12-14 09:12:53,645 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 13 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:12:53,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:12:53,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2022-12-14 09:12:53,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 567. [2022-12-14 09:12:53,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 553 states have (on average 1.725135623869801) internal successors, (954), 566 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:53,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 954 transitions. [2022-12-14 09:12:53,654 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 954 transitions. Word has length 17 [2022-12-14 09:12:53,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:12:53,654 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 954 transitions. [2022-12-14 09:12:53,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:53,655 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 954 transitions. [2022-12-14 09:12:53,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 09:12:53,655 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:12:53,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:12:53,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 09:12:53,655 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 09:12:53,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:12:53,656 INFO L85 PathProgramCache]: Analyzing trace with hash -424552434, now seen corresponding path program 1 times [2022-12-14 09:12:53,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:12:53,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947920452] [2022-12-14 09:12:53,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:12:53,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:12:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:12:53,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:12:53,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:12:53,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947920452] [2022-12-14 09:12:53,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947920452] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:12:53,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:12:53,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 09:12:53,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345770330] [2022-12-14 09:12:53,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:12:53,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 09:12:53,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:12:53,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 09:12:53,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:12:53,866 INFO L87 Difference]: Start difference. First operand 567 states and 954 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:53,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:12:53,921 INFO L93 Difference]: Finished difference Result 325 states and 503 transitions. [2022-12-14 09:12:53,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 09:12:53,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2022-12-14 09:12:53,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:12:53,922 INFO L225 Difference]: With dead ends: 325 [2022-12-14 09:12:53,922 INFO L226 Difference]: Without dead ends: 285 [2022-12-14 09:12:53,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:12:53,923 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:12:53,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:12:53,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-12-14 09:12:53,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 258. [2022-12-14 09:12:53,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 254 states have (on average 1.641732283464567) internal successors, (417), 257 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:53,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 417 transitions. [2022-12-14 09:12:53,929 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 417 transitions. Word has length 18 [2022-12-14 09:12:53,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:12:53,929 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 417 transitions. [2022-12-14 09:12:53,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:53,929 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 417 transitions. [2022-12-14 09:12:53,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 09:12:53,929 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:12:53,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:12:53,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 09:12:53,930 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 09:12:53,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:12:53,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1807022822, now seen corresponding path program 1 times [2022-12-14 09:12:53,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:12:53,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300319512] [2022-12-14 09:12:53,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:12:53,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:12:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:12:54,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:12:54,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:12:54,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300319512] [2022-12-14 09:12:54,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300319512] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:12:54,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:12:54,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 09:12:54,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737888552] [2022-12-14 09:12:54,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:12:54,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 09:12:54,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:12:54,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 09:12:54,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:12:54,072 INFO L87 Difference]: Start difference. First operand 258 states and 417 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:54,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:12:54,128 INFO L93 Difference]: Finished difference Result 183 states and 280 transitions. [2022-12-14 09:12:54,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 09:12:54,129 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2022-12-14 09:12:54,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:12:54,129 INFO L225 Difference]: With dead ends: 183 [2022-12-14 09:12:54,129 INFO L226 Difference]: Without dead ends: 175 [2022-12-14 09:12:54,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:12:54,130 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 44 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:12:54,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:12:54,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-12-14 09:12:54,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2022-12-14 09:12:54,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 169 states have (on average 1.5857988165680474) internal successors, (268), 170 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:54,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 268 transitions. [2022-12-14 09:12:54,133 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 268 transitions. Word has length 18 [2022-12-14 09:12:54,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:12:54,133 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 268 transitions. [2022-12-14 09:12:54,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:54,133 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 268 transitions. [2022-12-14 09:12:54,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 09:12:54,134 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:12:54,134 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] [2022-12-14 09:12:54,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 09:12:54,134 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-14 09:12:54,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:12:54,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1118867883, now seen corresponding path program 1 times [2022-12-14 09:12:54,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:12:54,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345658478] [2022-12-14 09:12:54,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:12:54,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:12:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:12:54,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:12:54,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:12:54,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345658478] [2022-12-14 09:12:54,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345658478] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:12:54,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:12:54,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:12:54,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026905327] [2022-12-14 09:12:54,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:12:54,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 09:12:54,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:12:54,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 09:12:54,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:12:54,266 INFO L87 Difference]: Start difference. First operand 171 states and 268 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:54,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:12:54,314 INFO L93 Difference]: Finished difference Result 169 states and 266 transitions. [2022-12-14 09:12:54,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 09:12:54,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2022-12-14 09:12:54,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:12:54,315 INFO L225 Difference]: With dead ends: 169 [2022-12-14 09:12:54,315 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 09:12:54,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:12:54,316 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 20 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:12:54,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 4 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:12:54,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 09:12:54,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 09:12:54,317 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) [2022-12-14 09:12:54,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 09:12:54,317 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2022-12-14 09:12:54,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:12:54,317 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 09:12:54,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:12:54,317 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 09:12:54,317 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 09:12:54,320 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-12-14 09:12:54,320 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-12-14 09:12:54,320 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-12-14 09:12:54,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-12-14 09:12:54,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2022-12-14 09:12:54,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2022-12-14 09:12:54,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 09:12:54,323 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:12:54,326 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-14 09:12:54,326 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 09:12:54,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 09:12:54 BasicIcfg [2022-12-14 09:12:54,328 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 09:12:54,329 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 09:12:54,329 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 09:12:54,329 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 09:12:54,329 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:12:48" (3/4) ... [2022-12-14 09:12:54,332 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 09:12:54,338 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2022-12-14 09:12:54,339 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-12-14 09:12:54,343 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-12-14 09:12:54,343 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-14 09:12:54,344 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-14 09:12:54,344 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 09:12:54,373 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bb44ca-077e-44e2-8bca-ef1759af3b8c/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 09:12:54,374 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 09:12:54,374 INFO L158 Benchmark]: Toolchain (without parser) took 6613.47ms. Allocated memory was 123.7MB in the beginning and 163.6MB in the end (delta: 39.8MB). Free memory was 81.6MB in the beginning and 87.8MB in the end (delta: -6.2MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2022-12-14 09:12:54,375 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 123.7MB. Free memory is still 93.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:12:54,375 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.38ms. Allocated memory is still 123.7MB. Free memory was 81.2MB in the beginning and 61.6MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 09:12:54,375 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.12ms. Allocated memory is still 123.7MB. Free memory was 61.6MB in the beginning and 59.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:12:54,376 INFO L158 Benchmark]: Boogie Preprocessor took 19.23ms. Allocated memory is still 123.7MB. Free memory was 59.5MB in the beginning and 57.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:12:54,376 INFO L158 Benchmark]: RCFGBuilder took 415.97ms. Allocated memory was 123.7MB in the beginning and 163.6MB in the end (delta: 39.8MB). Free memory was 57.7MB in the beginning and 129.5MB in the end (delta: -71.7MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. [2022-12-14 09:12:54,376 INFO L158 Benchmark]: TraceAbstraction took 5794.82ms. Allocated memory is still 163.6MB. Free memory was 129.1MB in the beginning and 90.9MB in the end (delta: 38.2MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. [2022-12-14 09:12:54,377 INFO L158 Benchmark]: Witness Printer took 44.93ms. Allocated memory is still 163.6MB. Free memory was 90.9MB in the beginning and 87.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:12:54,378 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 123.7MB. Free memory is still 93.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.38ms. Allocated memory is still 123.7MB. Free memory was 81.2MB in the beginning and 61.6MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.12ms. Allocated memory is still 123.7MB. Free memory was 61.6MB in the beginning and 59.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.23ms. Allocated memory is still 123.7MB. Free memory was 59.5MB in the beginning and 57.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 415.97ms. Allocated memory was 123.7MB in the beginning and 163.6MB in the end (delta: 39.8MB). Free memory was 57.7MB in the beginning and 129.5MB in the end (delta: -71.7MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. * TraceAbstraction took 5794.82ms. Allocated memory is still 163.6MB. Free memory was 129.1MB in the beginning and 90.9MB in the end (delta: 38.2MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. * Witness Printer took 44.93ms. Allocated memory is still 163.6MB. Free memory was 90.9MB in the beginning and 87.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 162 PlacesBefore, 53 PlacesAfterwards, 159 TransitionsBefore, 50 TransitionsAfterwards, 5364 CoEnabledTransitionPairs, 8 FixpointIterations, 47 TrivialSequentialCompositions, 77 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 19 ConcurrentYvCompositions, 0 ChoiceCompositions, 143 TotalNumberOfCompositions, 17168 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6784, independent: 6331, independent conditional: 0, independent unconditional: 6331, dependent: 453, dependent conditional: 0, dependent unconditional: 453, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3638, independent: 3520, independent conditional: 0, independent unconditional: 3520, dependent: 118, dependent conditional: 0, dependent unconditional: 118, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3638, independent: 3254, independent conditional: 0, independent unconditional: 3254, dependent: 384, dependent conditional: 0, dependent unconditional: 384, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 384, independent: 266, independent conditional: 0, independent unconditional: 266, dependent: 118, dependent conditional: 0, dependent unconditional: 118, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 353, independent: 167, independent conditional: 0, independent unconditional: 167, dependent: 186, dependent conditional: 0, dependent unconditional: 186, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6784, independent: 2811, independent conditional: 0, independent unconditional: 2811, dependent: 335, dependent conditional: 0, dependent unconditional: 335, unknown: 3638, unknown conditional: 0, unknown unconditional: 3638] , Statistics on independence cache: Total cache size (in pairs): 484, Positive cache size: 430, Positive conditional cache size: 0, Positive unconditional cache size: 430, Negative cache size: 54, Negative conditional cache size: 0, Negative unconditional cache size: 54, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 with 1 thread instances CFG has 5 procedures, 196 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 5.7s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 302 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 302 mSDsluCounter, 32 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 116 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 786 IncrementalHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 116 mSolverCounterUnsat, 18 mSDtfsCounter, 786 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1478occurred in iteration=0, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 93 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 716 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-14 09:12:54,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68bb44ca-077e-44e2-8bca-ef1759af3b8c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE