./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe001_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_5e040281-ae8b-48d0-aa78-efed1c58f162/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e040281-ae8b-48d0-aa78-efed1c58f162/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e040281-ae8b-48d0-aa78-efed1c58f162/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e040281-ae8b-48d0-aa78-efed1c58f162/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe001_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e040281-ae8b-48d0-aa78-efed1c58f162/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e040281-ae8b-48d0-aa78-efed1c58f162/bin/utaipan-I9t0OCRTmS --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 d13e05ad1104a4a5317ff09857a34619cbd86966f0892caf9775309ccc15230d --- 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-8393723 [2022-11-19 06:40:10,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:40:10,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:40:10,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:40:10,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:40:10,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:40:10,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:40:10,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:40:10,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:40:10,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:40:10,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:40:10,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:40:10,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:40:10,761 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:40:10,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:40:10,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:40:10,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:40:10,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:40:10,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:40:10,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:40:10,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:40:10,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:40:10,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:40:10,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:40:10,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:40:10,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:40:10,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:40:10,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:40:10,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:40:10,792 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:40:10,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:40:10,793 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:40:10,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:40:10,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:40:10,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:40:10,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:40:10,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:40:10,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:40:10,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:40:10,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:40:10,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:40:10,805 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e040281-ae8b-48d0-aa78-efed1c58f162/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 06:40:10,834 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:40:10,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:40:10,836 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:40:10,837 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:40:10,837 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:40:10,838 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:40:10,838 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:40:10,838 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:40:10,838 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:40:10,839 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:40:10,839 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:40:10,839 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:40:10,840 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:40:10,840 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:40:10,840 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:40:10,840 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:40:10,841 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:40:10,841 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:40:10,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:40:10,842 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:40:10,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:40:10,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:40:10,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:40:10,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:40:10,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:40:10,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:40:10,844 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:40:10,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:40:10,845 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:40:10,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:40:10,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:40:10,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:40:10,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:40:10,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:40:10,847 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:40:10,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:40:10,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:40:10,847 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:40:10,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:40:10,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:40:10,848 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:40:10,849 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_5e040281-ae8b-48d0-aa78-efed1c58f162/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e040281-ae8b-48d0-aa78-efed1c58f162/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d13e05ad1104a4a5317ff09857a34619cbd86966f0892caf9775309ccc15230d [2022-11-19 06:40:11,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:40:11,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:40:11,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:40:11,218 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:40:11,219 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:40:11,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e040281-ae8b-48d0-aa78-efed1c58f162/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/pthread-wmm/safe001_tso.i [2022-11-19 06:40:11,303 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e040281-ae8b-48d0-aa78-efed1c58f162/bin/utaipan-I9t0OCRTmS/data/afad8a7d7/477d5c9178194f4db7f7724825c9aa65/FLAGea0bc5f65 [2022-11-19 06:40:11,873 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:40:11,873 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e040281-ae8b-48d0-aa78-efed1c58f162/sv-benchmarks/c/pthread-wmm/safe001_tso.i [2022-11-19 06:40:11,887 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e040281-ae8b-48d0-aa78-efed1c58f162/bin/utaipan-I9t0OCRTmS/data/afad8a7d7/477d5c9178194f4db7f7724825c9aa65/FLAGea0bc5f65 [2022-11-19 06:40:12,165 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e040281-ae8b-48d0-aa78-efed1c58f162/bin/utaipan-I9t0OCRTmS/data/afad8a7d7/477d5c9178194f4db7f7724825c9aa65 [2022-11-19 06:40:12,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:40:12,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:40:12,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:40:12,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:40:12,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:40:12,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:40:12" (1/1) ... [2022-11-19 06:40:12,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ff4f968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:12, skipping insertion in model container [2022-11-19 06:40:12,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:40:12" (1/1) ... [2022-11-19 06:40:12,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:40:12,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:40:12,457 WARN L234 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_5e040281-ae8b-48d0-aa78-efed1c58f162/sv-benchmarks/c/pthread-wmm/safe001_tso.i[945,958] [2022-11-19 06:40:12,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:40:12,718 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:40:12,734 WARN L234 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_5e040281-ae8b-48d0-aa78-efed1c58f162/sv-benchmarks/c/pthread-wmm/safe001_tso.i[945,958] [2022-11-19 06:40:12,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:40:12,830 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:40:12,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:12 WrapperNode [2022-11-19 06:40:12,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:40:12,832 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:40:12,832 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:40:12,832 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:40:12,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:12" (1/1) ... [2022-11-19 06:40:12,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:12" (1/1) ... [2022-11-19 06:40:12,904 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-11-19 06:40:12,904 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:40:12,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:40:12,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:40:12,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:40:12,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:12" (1/1) ... [2022-11-19 06:40:12,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:12" (1/1) ... [2022-11-19 06:40:12,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:12" (1/1) ... [2022-11-19 06:40:12,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:12" (1/1) ... [2022-11-19 06:40:12,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:12" (1/1) ... [2022-11-19 06:40:12,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:12" (1/1) ... [2022-11-19 06:40:12,944 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:12" (1/1) ... [2022-11-19 06:40:12,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:12" (1/1) ... [2022-11-19 06:40:12,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:40:12,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:40:12,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:40:12,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:40:12,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:12" (1/1) ... [2022-11-19 06:40:12,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:40:12,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e040281-ae8b-48d0-aa78-efed1c58f162/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:40:13,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e040281-ae8b-48d0-aa78-efed1c58f162/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:40:13,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e040281-ae8b-48d0-aa78-efed1c58f162/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:40:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:40:13,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-19 06:40:13,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:40:13,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:40:13,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:40:13,051 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-19 06:40:13,051 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-19 06:40:13,051 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-19 06:40:13,051 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-19 06:40:13,052 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-19 06:40:13,052 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-19 06:40:13,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:40:13,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-19 06:40:13,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:40:13,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:40:13,056 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-19 06:40:13,304 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:40:13,306 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:40:13,570 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:40:13,581 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:40:13,581 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 06:40:13,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:40:13 BoogieIcfgContainer [2022-11-19 06:40:13,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:40:13,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:40:13,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:40:13,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:40:13,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:40:12" (1/3) ... [2022-11-19 06:40:13,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b921503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:40:13, skipping insertion in model container [2022-11-19 06:40:13,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:40:12" (2/3) ... [2022-11-19 06:40:13,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b921503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:40:13, skipping insertion in model container [2022-11-19 06:40:13,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:40:13" (3/3) ... [2022-11-19 06:40:13,601 INFO L112 eAbstractionObserver]: Analyzing ICFG safe001_tso.i [2022-11-19 06:40:13,610 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-19 06:40:13,622 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:40:13,623 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:40:13,624 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 06:40:13,723 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 06:40:13,779 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 06:40:13,795 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 91 transitions, 197 flow [2022-11-19 06:40:13,798 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 91 transitions, 197 flow [2022-11-19 06:40:13,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 197 flow [2022-11-19 06:40:13,856 INFO L130 PetriNetUnfolder]: 2/88 cut-off events. [2022-11-19 06:40:13,857 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-19 06:40:13,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-11-19 06:40:13,863 INFO L119 LiptonReduction]: Number of co-enabled transitions 1620 [2022-11-19 06:40:17,027 INFO L134 LiptonReduction]: Checked pairs total: 3161 [2022-11-19 06:40:17,028 INFO L136 LiptonReduction]: Total number of compositions: 81 [2022-11-19 06:40:17,043 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2022-11-19 06:40:17,105 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:17,123 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:40:17,129 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;@3946d5a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:40:17,130 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-19 06:40:17,133 INFO L276 IsEmpty]: Start isEmpty. Operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:17,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 06:40:17,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:40:17,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:40:17,141 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-19 06:40:17,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:40:17,146 INFO L85 PathProgramCache]: Analyzing trace with hash 549319390, now seen corresponding path program 1 times [2022-11-19 06:40:17,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:40:17,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125026573] [2022-11-19 06:40:17,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:40:17,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:40:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:40:17,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:40:17,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:40:17,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125026573] [2022-11-19 06:40:17,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125026573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:40:17,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:40:17,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:40:17,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699553781] [2022-11-19 06:40:17,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:40:17,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:40:17,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:40:17,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:40:17,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:40:17,768 INFO L87 Difference]: Start difference. First operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:17,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:40:17,862 INFO L93 Difference]: Finished difference Result 345 states and 906 transitions. [2022-11-19 06:40:17,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:40:17,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-11-19 06:40:17,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:40:17,877 INFO L225 Difference]: With dead ends: 345 [2022-11-19 06:40:17,877 INFO L226 Difference]: Without dead ends: 313 [2022-11-19 06:40:17,878 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 [2022-11-19 06:40:17,881 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:40:17,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 5 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:40:17,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-19 06:40:17,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 278. [2022-11-19 06:40:17,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 2.660649819494585) internal successors, (737), 277 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:17,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 737 transitions. [2022-11-19 06:40:17,946 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 737 transitions. Word has length 8 [2022-11-19 06:40:17,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:40:17,947 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 737 transitions. [2022-11-19 06:40:17,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:17,947 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 737 transitions. [2022-11-19 06:40:17,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 06:40:17,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:40:17,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:40:17,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:40:17,949 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-19 06:40:17,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:40:17,950 INFO L85 PathProgramCache]: Analyzing trace with hash 875152841, now seen corresponding path program 1 times [2022-11-19 06:40:17,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:40:17,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766212757] [2022-11-19 06:40:17,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:40:17,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:40:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:40:18,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:40:18,125 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:40:18,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766212757] [2022-11-19 06:40:18,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766212757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:40:18,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:40:18,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:40:18,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373180261] [2022-11-19 06:40:18,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:40:18,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:40:18,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:40:18,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:40:18,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:40:18,129 INFO L87 Difference]: Start difference. First operand 278 states and 737 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:18,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:40:18,201 INFO L93 Difference]: Finished difference Result 298 states and 767 transitions. [2022-11-19 06:40:18,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:40:18,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-11-19 06:40:18,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:40:18,205 INFO L225 Difference]: With dead ends: 298 [2022-11-19 06:40:18,205 INFO L226 Difference]: Without dead ends: 298 [2022-11-19 06:40:18,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:40:18,206 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:40:18,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 8 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:40:18,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-11-19 06:40:18,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 266. [2022-11-19 06:40:18,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 2.6339622641509433) internal successors, (698), 265 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:18,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 698 transitions. [2022-11-19 06:40:18,225 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 698 transitions. Word has length 9 [2022-11-19 06:40:18,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:40:18,226 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 698 transitions. [2022-11-19 06:40:18,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:18,226 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 698 transitions. [2022-11-19 06:40:18,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 06:40:18,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:40:18,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:40:18,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:40:18,228 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-19 06:40:18,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:40:18,228 INFO L85 PathProgramCache]: Analyzing trace with hash -150994310, now seen corresponding path program 1 times [2022-11-19 06:40:18,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:40:18,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761815855] [2022-11-19 06:40:18,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:40:18,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:40:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:40:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:40:18,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:40:18,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761815855] [2022-11-19 06:40:18,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761815855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:40:18,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:40:18,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:40:18,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15845951] [2022-11-19 06:40:18,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:40:18,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:40:18,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:40:18,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:40:18,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:40:18,374 INFO L87 Difference]: Start difference. First operand 266 states and 698 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:18,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:40:18,448 INFO L93 Difference]: Finished difference Result 281 states and 719 transitions. [2022-11-19 06:40:18,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:40:18,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-11-19 06:40:18,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:40:18,451 INFO L225 Difference]: With dead ends: 281 [2022-11-19 06:40:18,451 INFO L226 Difference]: Without dead ends: 281 [2022-11-19 06:40:18,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:40:18,456 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 24 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:40:18,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 8 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:40:18,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-11-19 06:40:18,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 244. [2022-11-19 06:40:18,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 2.6090534979423867) internal successors, (634), 243 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:18,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 634 transitions. [2022-11-19 06:40:18,481 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 634 transitions. Word has length 9 [2022-11-19 06:40:18,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:40:18,481 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 634 transitions. [2022-11-19 06:40:18,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:18,481 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 634 transitions. [2022-11-19 06:40:18,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 06:40:18,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:40:18,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:40:18,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:40:18,483 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-19 06:40:18,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:40:18,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1359908079, now seen corresponding path program 1 times [2022-11-19 06:40:18,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:40:18,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237470132] [2022-11-19 06:40:18,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:40:18,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:40:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:40:18,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:40:18,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:40:18,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237470132] [2022-11-19 06:40:18,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237470132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:40:18,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:40:18,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:40:18,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729252225] [2022-11-19 06:40:18,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:40:18,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:40:18,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:40:18,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:40:18,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:40:18,657 INFO L87 Difference]: Start difference. First operand 244 states and 634 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) 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) [2022-11-19 06:40:18,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:40:18,719 INFO L93 Difference]: Finished difference Result 310 states and 760 transitions. [2022-11-19 06:40:18,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:40:18,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) 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 [2022-11-19 06:40:18,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:40:18,721 INFO L225 Difference]: With dead ends: 310 [2022-11-19 06:40:18,721 INFO L226 Difference]: Without dead ends: 162 [2022-11-19 06:40:18,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:40:18,723 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 23 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:40:18,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 7 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:40:18,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-19 06:40:18,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-11-19 06:40:18,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.391304347826087) internal successors, (385), 161 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:18,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 385 transitions. [2022-11-19 06:40:18,758 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 385 transitions. Word has length 10 [2022-11-19 06:40:18,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:40:18,758 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 385 transitions. [2022-11-19 06:40:18,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) 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) [2022-11-19 06:40:18,758 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 385 transitions. [2022-11-19 06:40:18,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 06:40:18,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:40:18,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:40:18,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:40:18,760 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-19 06:40:18,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:40:18,760 INFO L85 PathProgramCache]: Analyzing trace with hash 921088235, now seen corresponding path program 1 times [2022-11-19 06:40:18,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:40:18,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071539047] [2022-11-19 06:40:18,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:40:18,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:40:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:40:18,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:40:18,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:40:18,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071539047] [2022-11-19 06:40:18,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071539047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:40:18,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:40:18,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:40:18,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272459491] [2022-11-19 06:40:18,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:40:18,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:40:18,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:40:18,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:40:18,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:40:18,958 INFO L87 Difference]: Start difference. First operand 162 states and 385 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:19,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:40:19,013 INFO L93 Difference]: Finished difference Result 192 states and 432 transitions. [2022-11-19 06:40:19,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:40:19,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-11-19 06:40:19,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:40:19,015 INFO L225 Difference]: With dead ends: 192 [2022-11-19 06:40:19,015 INFO L226 Difference]: Without dead ends: 176 [2022-11-19 06:40:19,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:40:19,018 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 21 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:40:19,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 6 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:40:19,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-19 06:40:19,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 146. [2022-11-19 06:40:19,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.3379310344827586) internal successors, (339), 145 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:19,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 339 transitions. [2022-11-19 06:40:19,025 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 339 transitions. Word has length 11 [2022-11-19 06:40:19,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:40:19,025 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 339 transitions. [2022-11-19 06:40:19,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:19,025 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 339 transitions. [2022-11-19 06:40:19,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 06:40:19,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:40:19,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:40:19,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:40:19,030 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-19 06:40:19,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:40:19,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1983337765, now seen corresponding path program 1 times [2022-11-19 06:40:19,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:40:19,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735421510] [2022-11-19 06:40:19,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:40:19,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:40:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:40:19,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:40:19,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:40:19,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735421510] [2022-11-19 06:40:19,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735421510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:40:19,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:40:19,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:40:19,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051773172] [2022-11-19 06:40:19,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:40:19,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:40:19,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:40:19,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:40:19,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:40:19,172 INFO L87 Difference]: Start difference. First operand 146 states and 339 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:19,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:40:19,225 INFO L93 Difference]: Finished difference Result 200 states and 452 transitions. [2022-11-19 06:40:19,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:40:19,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2022-11-19 06:40:19,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:40:19,227 INFO L225 Difference]: With dead ends: 200 [2022-11-19 06:40:19,227 INFO L226 Difference]: Without dead ends: 116 [2022-11-19 06:40:19,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:40:19,228 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 35 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:40:19,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 6 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:40:19,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-19 06:40:19,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 104. [2022-11-19 06:40:19,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.3106796116504853) internal successors, (238), 103 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:19,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 238 transitions. [2022-11-19 06:40:19,233 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 238 transitions. Word has length 12 [2022-11-19 06:40:19,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:40:19,234 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 238 transitions. [2022-11-19 06:40:19,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:19,234 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 238 transitions. [2022-11-19 06:40:19,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 06:40:19,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:40:19,235 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:40:19,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 06:40:19,236 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-19 06:40:19,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:40:19,236 INFO L85 PathProgramCache]: Analyzing trace with hash 384134477, now seen corresponding path program 1 times [2022-11-19 06:40:19,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:40:19,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862428124] [2022-11-19 06:40:19,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:40:19,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:40:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:40:19,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:40:19,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:40:19,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862428124] [2022-11-19 06:40:19,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862428124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:40:19,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:40:19,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:40:19,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086504482] [2022-11-19 06:40:19,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:40:19,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:40:19,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:40:19,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:40:19,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:40:19,394 INFO L87 Difference]: Start difference. First operand 104 states and 238 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:19,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:40:19,480 INFO L93 Difference]: Finished difference Result 112 states and 242 transitions. [2022-11-19 06:40:19,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:40:19,481 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-11-19 06:40:19,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:40:19,482 INFO L225 Difference]: With dead ends: 112 [2022-11-19 06:40:19,482 INFO L226 Difference]: Without dead ends: 52 [2022-11-19 06:40:19,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:40:19,483 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 28 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:40:19,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 8 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:40:19,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-19 06:40:19,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-19 06:40:19,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.8823529411764706) internal successors, (96), 51 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:19,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 96 transitions. [2022-11-19 06:40:19,487 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 96 transitions. Word has length 13 [2022-11-19 06:40:19,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:40:19,487 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 96 transitions. [2022-11-19 06:40:19,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:19,488 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 96 transitions. [2022-11-19 06:40:19,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 06:40:19,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:40:19,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:40:19,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 06:40:19,490 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-19 06:40:19,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:40:19,491 INFO L85 PathProgramCache]: Analyzing trace with hash 382894787, now seen corresponding path program 2 times [2022-11-19 06:40:19,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:40:19,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046801279] [2022-11-19 06:40:19,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:40:19,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:40:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:40:19,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:40:19,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:40:19,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046801279] [2022-11-19 06:40:19,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046801279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:40:19,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:40:19,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:40:19,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556705799] [2022-11-19 06:40:19,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:40:19,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:40:19,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:40:19,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:40:19,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:40:19,630 INFO L87 Difference]: Start difference. First operand 52 states and 96 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:19,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:40:19,678 INFO L93 Difference]: Finished difference Result 57 states and 96 transitions. [2022-11-19 06:40:19,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:40:19,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-11-19 06:40:19,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:40:19,680 INFO L225 Difference]: With dead ends: 57 [2022-11-19 06:40:19,680 INFO L226 Difference]: Without dead ends: 43 [2022-11-19 06:40:19,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:40:19,682 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 13 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:40:19,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 11 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:40:19,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-19 06:40:19,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-19 06:40:19,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.6666666666666667) internal successors, (70), 42 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:19,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 70 transitions. [2022-11-19 06:40:19,686 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 70 transitions. Word has length 13 [2022-11-19 06:40:19,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:40:19,686 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 70 transitions. [2022-11-19 06:40:19,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:19,686 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 70 transitions. [2022-11-19 06:40:19,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 06:40:19,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:40:19,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:40:19,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 06:40:19,688 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-19 06:40:19,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:40:19,689 INFO L85 PathProgramCache]: Analyzing trace with hash -960134978, now seen corresponding path program 1 times [2022-11-19 06:40:19,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:40:19,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793210800] [2022-11-19 06:40:19,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:40:19,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:40:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:40:19,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:40:19,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:40:19,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793210800] [2022-11-19 06:40:19,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793210800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:40:19,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:40:19,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:40:19,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378013455] [2022-11-19 06:40:19,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:40:19,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:40:19,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:40:19,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:40:19,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:40:19,825 INFO L87 Difference]: Start difference. First operand 43 states and 70 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-19 06:40:19,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:40:19,887 INFO L93 Difference]: Finished difference Result 39 states and 59 transitions. [2022-11-19 06:40:19,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:40:19,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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 [2022-11-19 06:40:19,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:40:19,888 INFO L225 Difference]: With dead ends: 39 [2022-11-19 06:40:19,888 INFO L226 Difference]: Without dead ends: 31 [2022-11-19 06:40:19,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:40:19,889 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 20 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:40:19,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 10 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:40:19,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-19 06:40:19,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-19 06:40:19,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 30 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:19,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 44 transitions. [2022-11-19 06:40:19,891 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 44 transitions. Word has length 14 [2022-11-19 06:40:19,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:40:19,891 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 44 transitions. [2022-11-19 06:40:19,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-19 06:40:19,892 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 44 transitions. [2022-11-19 06:40:19,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 06:40:19,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:40:19,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:40:19,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 06:40:19,893 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-19 06:40:19,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:40:19,893 INFO L85 PathProgramCache]: Analyzing trace with hash 300576875, now seen corresponding path program 1 times [2022-11-19 06:40:19,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:40:19,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989230565] [2022-11-19 06:40:19,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:40:19,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:40:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:40:20,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:40:20,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:40:20,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989230565] [2022-11-19 06:40:20,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989230565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:40:20,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:40:20,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:40:20,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277835365] [2022-11-19 06:40:20,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:40:20,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 06:40:20,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:40:20,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 06:40:20,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:40:20,018 INFO L87 Difference]: Start difference. First operand 31 states and 44 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2022-11-19 06:40:20,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:40:20,062 INFO L93 Difference]: Finished difference Result 28 states and 41 transitions. [2022-11-19 06:40:20,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:40:20,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 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 [2022-11-19 06:40:20,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:40:20,063 INFO L225 Difference]: With dead ends: 28 [2022-11-19 06:40:20,063 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 06:40:20,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:40:20,064 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 29 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:40:20,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 5 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:40:20,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 06:40:20,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 06:40:20,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:20,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 06:40:20,065 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2022-11-19 06:40:20,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:40:20,066 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 06:40:20,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2022-11-19 06:40:20,066 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 06:40:20,066 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 06:40:20,069 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-19 06:40:20,069 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-19 06:40:20,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-19 06:40:20,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-19 06:40:20,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 06:40:20,072 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:40:20,075 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-19 06:40:20,076 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:40:20,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:40:20 BasicIcfg [2022-11-19 06:40:20,078 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:40:20,079 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:40:20,079 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:40:20,079 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:40:20,080 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:40:13" (3/4) ... [2022-11-19 06:40:20,083 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 06:40:20,089 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-19 06:40:20,089 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-19 06:40:20,090 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-19 06:40:20,094 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-19 06:40:20,094 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-19 06:40:20,094 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-19 06:40:20,094 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 06:40:20,125 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e040281-ae8b-48d0-aa78-efed1c58f162/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 06:40:20,125 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:40:20,125 INFO L158 Benchmark]: Toolchain (without parser) took 7956.07ms. Allocated memory was 125.8MB in the beginning and 184.5MB in the end (delta: 58.7MB). Free memory was 90.0MB in the beginning and 148.9MB in the end (delta: -58.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:40:20,126 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 83.9MB. Free memory was 54.3MB in the beginning and 54.3MB in the end (delta: 25.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:40:20,126 INFO L158 Benchmark]: CACSL2BoogieTranslator took 650.46ms. Allocated memory is still 125.8MB. Free memory was 90.0MB in the beginning and 91.8MB in the end (delta: -1.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 06:40:20,126 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.64ms. Allocated memory is still 125.8MB. Free memory was 91.8MB in the beginning and 89.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:40:20,127 INFO L158 Benchmark]: Boogie Preprocessor took 42.25ms. Allocated memory is still 125.8MB. Free memory was 89.7MB in the beginning and 88.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:40:20,127 INFO L158 Benchmark]: RCFGBuilder took 636.61ms. Allocated memory is still 125.8MB. Free memory was 88.0MB in the beginning and 73.6MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 06:40:20,127 INFO L158 Benchmark]: TraceAbstraction took 6490.52ms. Allocated memory was 125.8MB in the beginning and 184.5MB in the end (delta: 58.7MB). Free memory was 73.1MB in the beginning and 151.0MB in the end (delta: -77.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:40:20,128 INFO L158 Benchmark]: Witness Printer took 46.12ms. Allocated memory is still 184.5MB. Free memory was 151.0MB in the beginning and 148.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:40:20,130 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 83.9MB. Free memory was 54.3MB in the beginning and 54.3MB in the end (delta: 25.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 650.46ms. Allocated memory is still 125.8MB. Free memory was 90.0MB in the beginning and 91.8MB in the end (delta: -1.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.64ms. Allocated memory is still 125.8MB. Free memory was 91.8MB in the beginning and 89.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.25ms. Allocated memory is still 125.8MB. Free memory was 89.7MB in the beginning and 88.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 636.61ms. Allocated memory is still 125.8MB. Free memory was 88.0MB in the beginning and 73.6MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6490.52ms. Allocated memory was 125.8MB in the beginning and 184.5MB in the end (delta: 58.7MB). Free memory was 73.1MB in the beginning and 151.0MB in the end (delta: -77.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 46.12ms. Allocated memory is still 184.5MB. Free memory was 151.0MB in the beginning and 148.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 99 PlacesBefore, 31 PlacesAfterwards, 91 TransitionsBefore, 21 TransitionsAfterwards, 1620 CoEnabledTransitionPairs, 6 FixpointIterations, 22 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 81 TotalNumberOfCompositions, 3161 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1639, independent: 1542, independent conditional: 0, independent unconditional: 1542, dependent: 97, dependent conditional: 0, dependent unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1104, independent: 1040, independent conditional: 0, independent unconditional: 1040, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1104, independent: 1030, independent conditional: 0, independent unconditional: 1030, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 74, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 228, independent: 35, independent conditional: 0, independent unconditional: 35, dependent: 193, dependent conditional: 0, dependent unconditional: 193, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1639, independent: 502, independent conditional: 0, independent unconditional: 502, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 1104, unknown conditional: 0, unknown unconditional: 1104] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 60, Positive conditional cache size: 0, Positive unconditional cache size: 60, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, 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: 18]: 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 7 procedures, 114 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 6.3s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 210 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 210 mSDsluCounter, 74 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 35 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 424 IncrementalHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 39 mSDtfsCounter, 424 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=278occurred in iteration=1, InterpolantAutomatonStates: 47, 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, 10 MinimizatonAttempts, 146 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-19 06:40:20,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e040281-ae8b-48d0-aa78-efed1c58f162/bin/utaipan-I9t0OCRTmS/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