./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72fe03c4-0408-4220-84fe-435440c04f02/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72fe03c4-0408-4220-84fe-435440c04f02/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72fe03c4-0408-4220-84fe-435440c04f02/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72fe03c4-0408-4220-84fe-435440c04f02/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72fe03c4-0408-4220-84fe-435440c04f02/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72fe03c4-0408-4220-84fe-435440c04f02/bin/utaipan-7li7fVZpFI --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 e136f4ab00a1c93eb400bb9f2a21b2887cfec20e18dff1c5960bc25f16f1bcad --- 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-5e519f3 [2022-11-03 04:10:53,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:10:53,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:10:53,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:10:53,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:10:53,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:10:53,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:10:53,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:10:53,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:10:53,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:10:53,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:10:53,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:10:53,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:10:53,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:10:53,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:10:53,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:10:53,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:10:53,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:10:53,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:10:53,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:10:53,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:10:53,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:10:53,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:10:53,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:10:53,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:10:53,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:10:53,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:10:53,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:10:53,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:10:53,870 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:10:53,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:10:53,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:10:53,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:10:53,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:10:53,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:10:53,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:10:53,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:10:53,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:10:53,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:10:53,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:10:53,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:10:53,881 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72fe03c4-0408-4220-84fe-435440c04f02/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 04:10:53,917 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:10:53,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:10:53,922 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:10:53,922 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:10:53,923 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:10:53,924 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:10:53,924 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:10:53,924 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:10:53,924 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:10:53,925 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:10:53,926 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:10:53,926 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:10:53,926 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:10:53,926 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:10:53,926 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:10:53,927 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:10:53,927 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:10:53,927 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:10:53,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:10:53,928 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:10:53,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:10:53,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:10:53,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:10:53,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:10:53,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:10:53,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:10:53,931 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:10:53,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:10:53,931 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:10:53,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:10:53,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:10:53,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:10:53,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:10:53,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:10:53,933 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:10:53,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:10:53,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:10:53,933 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:10:53,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:10:53,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:10:53,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:10:53,934 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_72fe03c4-0408-4220-84fe-435440c04f02/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72fe03c4-0408-4220-84fe-435440c04f02/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e136f4ab00a1c93eb400bb9f2a21b2887cfec20e18dff1c5960bc25f16f1bcad [2022-11-03 04:10:54,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:10:54,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:10:54,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:10:54,292 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:10:54,294 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:10:54,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72fe03c4-0408-4220-84fe-435440c04f02/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-03 04:10:54,363 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72fe03c4-0408-4220-84fe-435440c04f02/bin/utaipan-7li7fVZpFI/data/d2c80d5b8/8de673fc59224c86a149d7dca125df11/FLAGbe64335e0 [2022-11-03 04:10:54,857 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:10:54,864 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72fe03c4-0408-4220-84fe-435440c04f02/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-03 04:10:54,875 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72fe03c4-0408-4220-84fe-435440c04f02/bin/utaipan-7li7fVZpFI/data/d2c80d5b8/8de673fc59224c86a149d7dca125df11/FLAGbe64335e0 [2022-11-03 04:10:55,192 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72fe03c4-0408-4220-84fe-435440c04f02/bin/utaipan-7li7fVZpFI/data/d2c80d5b8/8de673fc59224c86a149d7dca125df11 [2022-11-03 04:10:55,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:10:55,198 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:10:55,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:10:55,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:10:55,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:10:55,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:10:55" (1/1) ... [2022-11-03 04:10:55,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc2b4c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:55, skipping insertion in model container [2022-11-03 04:10:55,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:10:55" (1/1) ... [2022-11-03 04:10:55,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:10:55,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:10:55,553 WARN L230 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_72fe03c4-0408-4220-84fe-435440c04f02/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-11-03 04:10:55,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:10:55,797 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:10:55,813 WARN L230 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_72fe03c4-0408-4220-84fe-435440c04f02/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-11-03 04:10:55,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:10:55,895 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:10:55,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:55 WrapperNode [2022-11-03 04:10:55,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:10:55,897 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:10:55,897 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:10:55,898 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:10:55,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:55" (1/1) ... [2022-11-03 04:10:55,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:55" (1/1) ... [2022-11-03 04:10:55,938 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-11-03 04:10:55,939 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:10:55,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:10:55,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:10:55,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:10:55,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:55" (1/1) ... [2022-11-03 04:10:55,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:55" (1/1) ... [2022-11-03 04:10:55,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:55" (1/1) ... [2022-11-03 04:10:55,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:55" (1/1) ... [2022-11-03 04:10:55,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:55" (1/1) ... [2022-11-03 04:10:56,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:55" (1/1) ... [2022-11-03 04:10:56,001 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:55" (1/1) ... [2022-11-03 04:10:56,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:55" (1/1) ... [2022-11-03 04:10:56,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:10:56,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:10:56,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:10:56,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:10:56,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:55" (1/1) ... [2022-11-03 04:10:56,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:10:56,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72fe03c4-0408-4220-84fe-435440c04f02/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:10:56,044 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72fe03c4-0408-4220-84fe-435440c04f02/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:10:56,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72fe03c4-0408-4220-84fe-435440c04f02/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:10:56,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 04:10:56,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-03 04:10:56,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:10:56,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 04:10:56,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 04:10:56,090 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-03 04:10:56,090 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-03 04:10:56,091 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-03 04:10:56,091 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-03 04:10:56,091 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-03 04:10:56,091 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-03 04:10:56,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:10:56,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-03 04:10:56,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:10:56,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:10:56,093 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 04:10:56,258 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:10:56,265 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:10:56,532 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:10:56,538 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:10:56,538 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 04:10:56,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:10:56 BoogieIcfgContainer [2022-11-03 04:10:56,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:10:56,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:10:56,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:10:56,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:10:56,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:10:55" (1/3) ... [2022-11-03 04:10:56,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fda8efc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:10:56, skipping insertion in model container [2022-11-03 04:10:56,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:55" (2/3) ... [2022-11-03 04:10:56,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fda8efc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:10:56, skipping insertion in model container [2022-11-03 04:10:56,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:10:56" (3/3) ... [2022-11-03 04:10:56,554 INFO L112 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-03 04:10:56,562 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 04:10:56,573 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:10:56,573 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:10:56,573 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 04:10:56,662 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-03 04:10:56,713 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 04:10:56,731 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 91 transitions, 197 flow [2022-11-03 04:10:56,742 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 91 transitions, 197 flow [2022-11-03 04:10:56,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 197 flow [2022-11-03 04:10:56,823 INFO L130 PetriNetUnfolder]: 2/88 cut-off events. [2022-11-03 04:10:56,824 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-03 04:10:56,827 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 45 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2022-11-03 04:10:56,829 INFO L118 LiptonReduction]: Number of co-enabled transitions 1518 [2022-11-03 04:10:59,324 INFO L133 LiptonReduction]: Checked pairs total: 2551 [2022-11-03 04:10:59,325 INFO L135 LiptonReduction]: Total number of compositions: 82 [2022-11-03 04:10:59,334 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2022-11-03 04:10:59,403 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 226 states, 225 states have (on average 3.031111111111111) internal successors, (682), 225 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:59,424 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:10:59,431 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;@7ef3e671, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:10:59,431 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-03 04:10:59,434 INFO L276 IsEmpty]: Start isEmpty. Operand has 226 states, 225 states have (on average 3.031111111111111) internal successors, (682), 225 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:59,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 04:10:59,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:59,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:10:59,441 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)] === [2022-11-03 04:10:59,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:59,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1432629110, now seen corresponding path program 1 times [2022-11-03 04:10:59,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:10:59,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008915278] [2022-11-03 04:10:59,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:59,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:10:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:59,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:10:59,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:10:59,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008915278] [2022-11-03 04:10:59,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008915278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:10:59,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:10:59,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:10:59,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318479616] [2022-11-03 04:10:59,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:10:59,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 04:10:59,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:10:59,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 04:10:59,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:10:59,741 INFO L87 Difference]: Start difference. First operand has 226 states, 225 states have (on average 3.031111111111111) internal successors, (682), 225 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 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) [2022-11-03 04:10:59,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:59,815 INFO L93 Difference]: Finished difference Result 226 states and 634 transitions. [2022-11-03 04:10:59,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 04:10:59,818 INFO L78 Accepts]: Start accepts. Automaton has has 2 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 [2022-11-03 04:10:59,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:59,836 INFO L225 Difference]: With dead ends: 226 [2022-11-03 04:10:59,836 INFO L226 Difference]: Without dead ends: 226 [2022-11-03 04:10:59,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:10:59,843 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:59,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:10:59,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-11-03 04:10:59,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2022-11-03 04:10:59,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 2.8177777777777777) internal successors, (634), 225 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) [2022-11-03 04:10:59,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2022-11-03 04:10:59,923 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2022-11-03 04:10:59,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:59,925 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2022-11-03 04:10:59,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 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) [2022-11-03 04:10:59,926 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2022-11-03 04:10:59,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 04:10:59,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:59,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:10:59,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:10:59,932 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)] === [2022-11-03 04:10:59,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:59,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1461827653, now seen corresponding path program 1 times [2022-11-03 04:10:59,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:10:59,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857774724] [2022-11-03 04:10:59,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:59,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:00,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:11:00,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:00,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857774724] [2022-11-03 04:11:00,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857774724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:00,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:11:00,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:11:00,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974773910] [2022-11-03 04:11:00,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:00,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:11:00,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:00,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:11:00,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:11:00,300 INFO L87 Difference]: Start difference. First operand 226 states and 634 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) [2022-11-03 04:11:00,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:00,391 INFO L93 Difference]: Finished difference Result 268 states and 719 transitions. [2022-11-03 04:11:00,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:11:00,393 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 [2022-11-03 04:11:00,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:00,395 INFO L225 Difference]: With dead ends: 268 [2022-11-03 04:11:00,396 INFO L226 Difference]: Without dead ends: 220 [2022-11-03 04:11:00,396 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 [2022-11-03 04:11:00,400 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:00,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 8 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:11:00,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-03 04:11:00,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2022-11-03 04:11:00,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 2.7945205479452055) internal successors, (612), 219 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:11:00,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 612 transitions. [2022-11-03 04:11:00,428 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 612 transitions. Word has length 9 [2022-11-03 04:11:00,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:00,428 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 612 transitions. [2022-11-03 04:11:00,429 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) [2022-11-03 04:11:00,429 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 612 transitions. [2022-11-03 04:11:00,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 04:11:00,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:00,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:11:00,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:11:00,433 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)] === [2022-11-03 04:11:00,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:00,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1311055374, now seen corresponding path program 1 times [2022-11-03 04:11:00,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:00,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389335501] [2022-11-03 04:11:00,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:00,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:00,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:11:00,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:00,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389335501] [2022-11-03 04:11:00,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389335501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:00,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:11:00,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:11:00,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711740555] [2022-11-03 04:11:00,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:00,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:11:00,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:00,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:11:00,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:11:00,744 INFO L87 Difference]: Start difference. First operand 220 states and 612 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2022-11-03 04:11:00,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:00,837 INFO L93 Difference]: Finished difference Result 238 states and 636 transitions. [2022-11-03 04:11:00,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:11:00,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 [2022-11-03 04:11:00,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:00,842 INFO L225 Difference]: With dead ends: 238 [2022-11-03 04:11:00,844 INFO L226 Difference]: Without dead ends: 202 [2022-11-03 04:11:00,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:11:00,847 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 23 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:00,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 12 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:11:00,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-03 04:11:00,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2022-11-03 04:11:00,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 2.746268656716418) internal successors, (552), 201 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:11:00,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2022-11-03 04:11:00,875 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 10 [2022-11-03 04:11:00,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:00,875 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2022-11-03 04:11:00,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2022-11-03 04:11:00,878 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2022-11-03 04:11:00,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 04:11:00,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:00,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:11:00,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 04:11:00,880 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)] === [2022-11-03 04:11:00,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:00,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1929433037, now seen corresponding path program 1 times [2022-11-03 04:11:00,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:00,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747949665] [2022-11-03 04:11:00,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:00,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:01,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:11:01,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:01,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747949665] [2022-11-03 04:11:01,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747949665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:01,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:11:01,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:11:01,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126145496] [2022-11-03 04:11:01,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:01,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:11:01,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:01,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:11:01,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:11:01,062 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2022-11-03 04:11:01,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:01,210 INFO L93 Difference]: Finished difference Result 325 states and 862 transitions. [2022-11-03 04:11:01,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 04:11:01,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 [2022-11-03 04:11:01,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:01,220 INFO L225 Difference]: With dead ends: 325 [2022-11-03 04:11:01,221 INFO L226 Difference]: Without dead ends: 226 [2022-11-03 04:11:01,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:11:01,225 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 51 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:01,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 9 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:11:01,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-11-03 04:11:01,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2022-11-03 04:11:01,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 2.7066666666666666) internal successors, (609), 225 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:11:01,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 609 transitions. [2022-11-03 04:11:01,258 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 609 transitions. Word has length 10 [2022-11-03 04:11:01,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:01,259 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 609 transitions. [2022-11-03 04:11:01,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2022-11-03 04:11:01,259 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 609 transitions. [2022-11-03 04:11:01,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 04:11:01,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:01,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:11:01,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 04:11:01,264 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)] === [2022-11-03 04:11:01,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:01,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1984875754, now seen corresponding path program 1 times [2022-11-03 04:11:01,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:01,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736642496] [2022-11-03 04:11:01,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:01,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:01,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:11:01,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:01,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736642496] [2022-11-03 04:11:01,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736642496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:01,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:11:01,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:11:01,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077363045] [2022-11-03 04:11:01,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:01,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:11:01,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:01,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:11:01,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:11:01,397 INFO L87 Difference]: Start difference. First operand 226 states and 609 transitions. Second operand has 5 states, 4 states have (on average 2.75) 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) [2022-11-03 04:11:01,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:01,495 INFO L93 Difference]: Finished difference Result 238 states and 623 transitions. [2022-11-03 04:11:01,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:11:01,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) 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 [2022-11-03 04:11:01,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:01,498 INFO L225 Difference]: With dead ends: 238 [2022-11-03 04:11:01,498 INFO L226 Difference]: Without dead ends: 214 [2022-11-03 04:11:01,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:11:01,499 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:01,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 12 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:11:01,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-03 04:11:01,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 202. [2022-11-03 04:11:01,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 2.681592039800995) internal successors, (539), 201 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:11:01,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 539 transitions. [2022-11-03 04:11:01,508 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 539 transitions. Word has length 11 [2022-11-03 04:11:01,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:01,509 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 539 transitions. [2022-11-03 04:11:01,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) 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) [2022-11-03 04:11:01,509 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 539 transitions. [2022-11-03 04:11:01,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 04:11:01,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:01,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:11:01,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 04:11:01,511 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)] === [2022-11-03 04:11:01,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:01,511 INFO L85 PathProgramCache]: Analyzing trace with hash 315816928, now seen corresponding path program 1 times [2022-11-03 04:11:01,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:01,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724021601] [2022-11-03 04:11:01,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:01,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:01,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:11:01,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:01,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724021601] [2022-11-03 04:11:01,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724021601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:01,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:11:01,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:11:01,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377302620] [2022-11-03 04:11:01,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:01,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:11:01,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:01,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:11:01,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:11:01,620 INFO L87 Difference]: Start difference. First operand 202 states and 539 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2022-11-03 04:11:01,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:01,702 INFO L93 Difference]: Finished difference Result 259 states and 676 transitions. [2022-11-03 04:11:01,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:11:01,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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 [2022-11-03 04:11:01,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:01,704 INFO L225 Difference]: With dead ends: 259 [2022-11-03 04:11:01,704 INFO L226 Difference]: Without dead ends: 142 [2022-11-03 04:11:01,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:11:01,706 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 59 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:01,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 7 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:11:01,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-03 04:11:01,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2022-11-03 04:11:01,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 2.5106382978723403) internal successors, (354), 141 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:11:01,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 354 transitions. [2022-11-03 04:11:01,712 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 354 transitions. Word has length 11 [2022-11-03 04:11:01,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:01,713 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 354 transitions. [2022-11-03 04:11:01,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2022-11-03 04:11:01,713 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 354 transitions. [2022-11-03 04:11:01,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 04:11:01,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:01,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:11:01,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 04:11:01,715 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)] === [2022-11-03 04:11:01,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:01,715 INFO L85 PathProgramCache]: Analyzing trace with hash 124010327, now seen corresponding path program 1 times [2022-11-03 04:11:01,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:01,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010679773] [2022-11-03 04:11:01,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:01,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:01,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:11:01,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:01,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010679773] [2022-11-03 04:11:01,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010679773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:01,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:11:01,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:11:01,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263163529] [2022-11-03 04:11:01,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:01,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:11:01,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:01,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:11:01,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:11:01,849 INFO L87 Difference]: Start difference. First operand 142 states and 354 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) [2022-11-03 04:11:01,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:01,925 INFO L93 Difference]: Finished difference Result 172 states and 419 transitions. [2022-11-03 04:11:01,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:11:01,925 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 [2022-11-03 04:11:01,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:01,926 INFO L225 Difference]: With dead ends: 172 [2022-11-03 04:11:01,926 INFO L226 Difference]: Without dead ends: 76 [2022-11-03 04:11:01,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:11:01,928 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 30 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:01,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 9 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:11:01,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-03 04:11:01,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-11-03 04:11:01,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 2.2533333333333334) internal successors, (169), 75 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:11:01,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 169 transitions. [2022-11-03 04:11:01,932 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 169 transitions. Word has length 12 [2022-11-03 04:11:01,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:01,932 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 169 transitions. [2022-11-03 04:11:01,932 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) [2022-11-03 04:11:01,932 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 169 transitions. [2022-11-03 04:11:01,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 04:11:01,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:01,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:11:01,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 04:11:01,934 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)] === [2022-11-03 04:11:01,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:01,934 INFO L85 PathProgramCache]: Analyzing trace with hash 421545122, now seen corresponding path program 1 times [2022-11-03 04:11:01,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:01,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296048844] [2022-11-03 04:11:01,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:01,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:02,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:11:02,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:02,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296048844] [2022-11-03 04:11:02,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296048844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:02,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:11:02,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:11:02,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191356507] [2022-11-03 04:11:02,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:02,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:11:02,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:02,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:11:02,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:11:02,078 INFO L87 Difference]: Start difference. First operand 76 states and 169 transitions. Second operand has 4 states, 4 states have (on average 3.25) 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) [2022-11-03 04:11:02,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:02,132 INFO L93 Difference]: Finished difference Result 87 states and 174 transitions. [2022-11-03 04:11:02,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:11:02,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) 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 [2022-11-03 04:11:02,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:02,134 INFO L225 Difference]: With dead ends: 87 [2022-11-03 04:11:02,134 INFO L226 Difference]: Without dead ends: 66 [2022-11-03 04:11:02,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:11:02,136 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:02,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 10 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:11:02,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-03 04:11:02,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-11-03 04:11:02,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 2.046153846153846) internal successors, (133), 65 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:11:02,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 133 transitions. [2022-11-03 04:11:02,140 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 133 transitions. Word has length 13 [2022-11-03 04:11:02,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:02,140 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 133 transitions. [2022-11-03 04:11:02,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) 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) [2022-11-03 04:11:02,140 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 133 transitions. [2022-11-03 04:11:02,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 04:11:02,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:02,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:11:02,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 04:11:02,142 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)] === [2022-11-03 04:11:02,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:02,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1724270692, now seen corresponding path program 1 times [2022-11-03 04:11:02,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:02,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996549106] [2022-11-03 04:11:02,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:02,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:02,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:11:02,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:02,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996549106] [2022-11-03 04:11:02,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996549106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:02,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:11:02,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:11:02,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165203113] [2022-11-03 04:11:02,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:02,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:11:02,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:02,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:11:02,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:11:02,311 INFO L87 Difference]: Start difference. First operand 66 states and 133 transitions. Second operand has 5 states, 5 states have (on average 2.8) 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) [2022-11-03 04:11:02,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:02,379 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2022-11-03 04:11:02,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:11:02,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) 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 [2022-11-03 04:11:02,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:02,380 INFO L225 Difference]: With dead ends: 62 [2022-11-03 04:11:02,380 INFO L226 Difference]: Without dead ends: 47 [2022-11-03 04:11:02,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:11:02,381 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:02,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 12 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:11:02,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-03 04:11:02,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-03 04:11:02,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.6956521739130435) internal successors, (78), 46 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:11:02,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2022-11-03 04:11:02,385 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2022-11-03 04:11:02,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:02,385 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2022-11-03 04:11:02,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) 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) [2022-11-03 04:11:02,385 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2022-11-03 04:11:02,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 04:11:02,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:02,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:11:02,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 04:11:02,386 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)] === [2022-11-03 04:11:02,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:02,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1913369985, now seen corresponding path program 1 times [2022-11-03 04:11:02,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:02,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745980499] [2022-11-03 04:11:02,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:02,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:02,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:11:02,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:02,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745980499] [2022-11-03 04:11:02,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745980499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:02,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:11:02,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:11:02,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645369594] [2022-11-03 04:11:02,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:02,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:11:02,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:02,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:11:02,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:11:02,521 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand has 6 states, 6 states have (on average 2.5) 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) [2022-11-03 04:11:02,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:02,586 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2022-11-03 04:11:02,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:11:02,587 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) 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 [2022-11-03 04:11:02,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:02,587 INFO L225 Difference]: With dead ends: 40 [2022-11-03 04:11:02,588 INFO L226 Difference]: Without dead ends: 34 [2022-11-03 04:11:02,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:11:02,589 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 26 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:02,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 10 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:11:02,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-03 04:11:02,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-03 04:11:02,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 33 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:11:02,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2022-11-03 04:11:02,591 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 15 [2022-11-03 04:11:02,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:02,592 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2022-11-03 04:11:02,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) 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) [2022-11-03 04:11:02,592 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2022-11-03 04:11:02,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 04:11:02,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:02,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:11:02,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 04:11:02,593 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-03 04:11:02,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:02,594 INFO L85 PathProgramCache]: Analyzing trace with hash -590512110, now seen corresponding path program 1 times [2022-11-03 04:11:02,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:02,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754207385] [2022-11-03 04:11:02,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:02,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:02,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:11:02,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:02,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754207385] [2022-11-03 04:11:02,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754207385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:02,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:11:02,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:11:02,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372409110] [2022-11-03 04:11:02,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:02,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:11:02,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:02,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:11:02,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:11:02,773 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:11:02,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:02,833 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2022-11-03 04:11:02,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:11:02,833 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-03 04:11:02,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:02,834 INFO L225 Difference]: With dead ends: 33 [2022-11-03 04:11:02,834 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 04:11:02,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:11:02,835 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 13 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:02,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:11:02,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 04:11:02,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 04:11:02,836 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) [2022-11-03 04:11:02,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 04:11:02,837 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2022-11-03 04:11:02,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:02,837 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 04:11:02,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:11:02,837 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 04:11:02,838 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 04:11:02,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-03 04:11:02,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-03 04:11:02,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-03 04:11:02,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-03 04:11:02,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 04:11:02,844 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:11:02,846 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-03 04:11:02,846 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 04:11:02,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:11:02 BasicIcfg [2022-11-03 04:11:02,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 04:11:02,850 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 04:11:02,850 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 04:11:02,850 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 04:11:02,851 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:10:56" (3/4) ... [2022-11-03 04:11:02,854 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 04:11:02,860 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-03 04:11:02,860 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-03 04:11:02,861 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-03 04:11:02,865 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-03 04:11:02,865 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-03 04:11:02,865 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-03 04:11:02,865 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 04:11:02,897 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72fe03c4-0408-4220-84fe-435440c04f02/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 04:11:02,897 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 04:11:02,898 INFO L158 Benchmark]: Toolchain (without parser) took 7699.69ms. Allocated memory was 94.4MB in the beginning and 136.3MB in the end (delta: 41.9MB). Free memory was 52.3MB in the beginning and 41.2MB in the end (delta: 11.1MB). Peak memory consumption was 53.9MB. Max. memory is 16.1GB. [2022-11-03 04:11:02,898 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 94.4MB. Free memory is still 70.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:11:02,898 INFO L158 Benchmark]: CACSL2BoogieTranslator took 693.64ms. Allocated memory is still 94.4MB. Free memory was 52.0MB in the beginning and 58.2MB in the end (delta: -6.2MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2022-11-03 04:11:02,899 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.49ms. Allocated memory is still 94.4MB. Free memory was 58.2MB in the beginning and 56.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 04:11:02,899 INFO L158 Benchmark]: Boogie Preprocessor took 67.11ms. Allocated memory is still 94.4MB. Free memory was 56.1MB in the beginning and 54.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 04:11:02,899 INFO L158 Benchmark]: RCFGBuilder took 533.98ms. Allocated memory is still 94.4MB. Free memory was 54.8MB in the beginning and 41.5MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 04:11:02,900 INFO L158 Benchmark]: TraceAbstraction took 6306.55ms. Allocated memory was 94.4MB in the beginning and 136.3MB in the end (delta: 41.9MB). Free memory was 40.8MB in the beginning and 44.3MB in the end (delta: -3.5MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. [2022-11-03 04:11:02,900 INFO L158 Benchmark]: Witness Printer took 47.18ms. Allocated memory is still 136.3MB. Free memory was 44.3MB in the beginning and 41.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 04:11:02,902 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 94.4MB. Free memory is still 70.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 693.64ms. Allocated memory is still 94.4MB. Free memory was 52.0MB in the beginning and 58.2MB in the end (delta: -6.2MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.49ms. Allocated memory is still 94.4MB. Free memory was 58.2MB in the beginning and 56.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.11ms. Allocated memory is still 94.4MB. Free memory was 56.1MB in the beginning and 54.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 533.98ms. Allocated memory is still 94.4MB. Free memory was 54.8MB in the beginning and 41.5MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6306.55ms. Allocated memory was 94.4MB in the beginning and 136.3MB in the end (delta: 41.9MB). Free memory was 40.8MB in the beginning and 44.3MB in the end (delta: -3.5MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. * Witness Printer took 47.18ms. Allocated memory is still 136.3MB. Free memory was 44.3MB in the beginning and 41.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 99 PlacesBefore, 31 PlacesAfterwards, 91 TransitionsBefore, 22 TransitionsAfterwards, 1518 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 82 TotalNumberOfCompositions, 2551 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1651, positive: 1574, positive conditional: 0, positive unconditional: 1574, negative: 77, negative conditional: 0, negative unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1067, positive: 1032, positive conditional: 0, positive unconditional: 1032, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1067, positive: 1024, positive conditional: 0, positive unconditional: 1024, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 43, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 105, positive: 26, positive conditional: 0, positive unconditional: 26, negative: 79, negative conditional: 0, negative unconditional: 79, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1651, positive: 542, positive conditional: 0, positive unconditional: 542, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 1067, unknown conditional: 0, unknown unconditional: 1067] , Statistics on independence cache: Total cache size (in pairs): 75, Positive cache size: 65, Positive conditional cache size: 0, Positive unconditional cache size: 65, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - 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, 113 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 6.1s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 273 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 273 mSDsluCounter, 94 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 343 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 635 IncrementalHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 34 mSDtfsCounter, 635 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 556 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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! [2022-11-03 04:11:02,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72fe03c4-0408-4220-84fe-435440c04f02/bin/utaipan-7li7fVZpFI/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