./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 04:44:50,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 04:44:50,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 04:44:50,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 04:44:50,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 04:44:50,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 04:44:50,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 04:44:50,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 04:44:50,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 04:44:50,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 04:44:50,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 04:44:50,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 04:44:50,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 04:44:50,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 04:44:50,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 04:44:50,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 04:44:50,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 04:44:50,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 04:44:50,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 04:44:50,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 04:44:50,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 04:44:50,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 04:44:50,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 04:44:50,882 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 04:44:50,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 04:44:50,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 04:44:50,887 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 04:44:50,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 04:44:50,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 04:44:50,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 04:44:50,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 04:44:50,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 04:44:50,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 04:44:50,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 04:44:50,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 04:44:50,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 04:44:50,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 04:44:50,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 04:44:50,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 04:44:50,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 04:44:50,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 04:44:50,895 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 04:44:50,914 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 04:44:50,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 04:44:50,918 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 04:44:50,918 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 04:44:50,919 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 04:44:50,919 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 04:44:50,919 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 04:44:50,920 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 04:44:50,920 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 04:44:50,920 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 04:44:50,920 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 04:44:50,920 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 04:44:50,920 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 04:44:50,920 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 04:44:50,920 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 04:44:50,921 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 04:44:50,921 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 04:44:50,921 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 04:44:50,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 04:44:50,921 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 04:44:50,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 04:44:50,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 04:44:50,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 04:44:50,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 04:44:50,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 04:44:50,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 04:44:50,922 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 04:44:50,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 04:44:50,923 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 04:44:50,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 04:44:50,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 04:44:50,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 04:44:50,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:44:50,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 04:44:50,923 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 04:44:50,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 04:44:50,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 04:44:50,924 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 04:44:50,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 04:44:50,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 04:44:50,924 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 04:44:50,924 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_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 [2022-12-14 04:44:51,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 04:44:51,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 04:44:51,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 04:44:51,117 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 04:44:51,117 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 04:44:51,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-12-14 04:44:53,676 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 04:44:53,823 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 04:44:53,823 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-12-14 04:44:53,829 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh/data/dbdb425c9/a517346b41174ec09ddf8fa27c2e02f4/FLAG045667943 [2022-12-14 04:44:53,843 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh/data/dbdb425c9/a517346b41174ec09ddf8fa27c2e02f4 [2022-12-14 04:44:53,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 04:44:53,847 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 04:44:53,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 04:44:53,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 04:44:53,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 04:44:53,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:44:53" (1/1) ... [2022-12-14 04:44:53,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aff35f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:53, skipping insertion in model container [2022-12-14 04:44:53,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:44:53" (1/1) ... [2022-12-14 04:44:53,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 04:44:53,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:44:54,023 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-12-14 04:44:54,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:44:54,048 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 04:44:54,073 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-12-14 04:44:54,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:44:54,093 INFO L208 MainTranslator]: Completed translation [2022-12-14 04:44:54,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:54 WrapperNode [2022-12-14 04:44:54,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 04:44:54,094 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 04:44:54,094 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 04:44:54,094 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 04:44:54,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:54" (1/1) ... [2022-12-14 04:44:54,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:54" (1/1) ... [2022-12-14 04:44:54,139 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 413 [2022-12-14 04:44:54,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 04:44:54,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 04:44:54,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 04:44:54,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 04:44:54,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:54" (1/1) ... [2022-12-14 04:44:54,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:54" (1/1) ... [2022-12-14 04:44:54,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:54" (1/1) ... [2022-12-14 04:44:54,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:54" (1/1) ... [2022-12-14 04:44:54,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:54" (1/1) ... [2022-12-14 04:44:54,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:54" (1/1) ... [2022-12-14 04:44:54,174 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:54" (1/1) ... [2022-12-14 04:44:54,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:54" (1/1) ... [2022-12-14 04:44:54,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 04:44:54,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 04:44:54,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 04:44:54,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 04:44:54,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:54" (1/1) ... [2022-12-14 04:44:54,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:44:54,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:44:54,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 04:44:54,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 04:44:54,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 04:44:54,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 04:44:54,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 04:44:54,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 04:44:54,241 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-14 04:44:54,241 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-14 04:44:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-14 04:44:54,251 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-14 04:44:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-14 04:44:54,252 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-14 04:44:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 04:44:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 04:44:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 04:44:54,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 04:44:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 04:44:54,254 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 04:44:54,345 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 04:44:54,347 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 04:44:54,802 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 04:44:54,813 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 04:44:54,813 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-14 04:44:54,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:44:54 BoogieIcfgContainer [2022-12-14 04:44:54,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 04:44:54,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 04:44:54,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 04:44:54,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 04:44:54,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:44:53" (1/3) ... [2022-12-14 04:44:54,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411cc6cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:44:54, skipping insertion in model container [2022-12-14 04:44:54,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:54" (2/3) ... [2022-12-14 04:44:54,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411cc6cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:44:54, skipping insertion in model container [2022-12-14 04:44:54,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:44:54" (3/3) ... [2022-12-14 04:44:54,824 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2022-12-14 04:44:54,831 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 04:44:54,839 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 04:44:54,839 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 04:44:54,840 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 04:44:54,929 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-14 04:44:54,963 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 04:44:54,974 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 513 places, 544 transitions, 1112 flow [2022-12-14 04:44:54,977 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 513 places, 544 transitions, 1112 flow [2022-12-14 04:44:54,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 513 places, 544 transitions, 1112 flow [2022-12-14 04:44:55,121 INFO L130 PetriNetUnfolder]: 41/541 cut-off events. [2022-12-14 04:44:55,121 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-14 04:44:55,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 541 events. 41/541 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 691 event pairs, 0 based on Foata normal form. 0/499 useless extension candidates. Maximal degree in co-relation 459. Up to 2 conditions per place. [2022-12-14 04:44:55,135 INFO L119 LiptonReduction]: Number of co-enabled transitions 21384 [2022-12-14 04:45:10,336 INFO L134 LiptonReduction]: Checked pairs total: 23476 [2022-12-14 04:45:10,336 INFO L136 LiptonReduction]: Total number of compositions: 628 [2022-12-14 04:45:10,342 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 46 transitions, 116 flow [2022-12-14 04:45:10,369 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 350 states, 349 states have (on average 3.128939828080229) internal successors, (1092), 349 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:10,382 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:45:10,386 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;@482e1137, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:45:10,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-14 04:45:10,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 350 states, 349 states have (on average 3.128939828080229) internal successors, (1092), 349 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:10,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 04:45:10,396 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:10,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:10,397 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)] === [2022-12-14 04:45:10,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:10,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1235434648, now seen corresponding path program 1 times [2022-12-14 04:45:10,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:10,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913372552] [2022-12-14 04:45:10,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:10,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:10,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:45:10,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:10,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913372552] [2022-12-14 04:45:10,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913372552] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:10,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:10,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:45:10,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910145009] [2022-12-14 04:45:10,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:10,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:45:10,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:10,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:45:10,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:45:10,664 INFO L87 Difference]: Start difference. First operand has 350 states, 349 states have (on average 3.128939828080229) internal successors, (1092), 349 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:10,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:10,766 INFO L93 Difference]: Finished difference Result 394 states and 1228 transitions. [2022-12-14 04:45:10,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:45:10,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2022-12-14 04:45:10,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:10,777 INFO L225 Difference]: With dead ends: 394 [2022-12-14 04:45:10,777 INFO L226 Difference]: Without dead ends: 394 [2022-12-14 04:45:10,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:45:10,779 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:10,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:45:10,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-12-14 04:45:10,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2022-12-14 04:45:10,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.1246819338422394) internal successors, (1228), 393 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:10,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1228 transitions. [2022-12-14 04:45:10,823 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1228 transitions. Word has length 28 [2022-12-14 04:45:10,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:10,823 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 1228 transitions. [2022-12-14 04:45:10,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:10,823 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1228 transitions. [2022-12-14 04:45:10,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 04:45:10,825 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:10,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:10,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 04:45:10,826 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)] === [2022-12-14 04:45:10,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:10,826 INFO L85 PathProgramCache]: Analyzing trace with hash -789061633, now seen corresponding path program 1 times [2022-12-14 04:45:10,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:10,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396677583] [2022-12-14 04:45:10,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:10,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:10,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:45:10,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:10,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396677583] [2022-12-14 04:45:10,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396677583] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:10,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:10,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:45:10,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202691646] [2022-12-14 04:45:10,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:10,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:45:10,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:10,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:45:10,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:45:10,930 INFO L87 Difference]: Start difference. First operand 394 states and 1228 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:11,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:11,014 INFO L93 Difference]: Finished difference Result 446 states and 1388 transitions. [2022-12-14 04:45:11,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:45:11,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2022-12-14 04:45:11,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:11,019 INFO L225 Difference]: With dead ends: 446 [2022-12-14 04:45:11,019 INFO L226 Difference]: Without dead ends: 446 [2022-12-14 04:45:11,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:45:11,020 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:11,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:45:11,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-12-14 04:45:11,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2022-12-14 04:45:11,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 3.1191011235955055) internal successors, (1388), 445 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:11,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1388 transitions. [2022-12-14 04:45:11,036 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1388 transitions. Word has length 29 [2022-12-14 04:45:11,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:11,037 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 1388 transitions. [2022-12-14 04:45:11,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:11,037 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1388 transitions. [2022-12-14 04:45:11,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-14 04:45:11,039 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:11,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:11,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 04:45:11,040 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)] === [2022-12-14 04:45:11,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:11,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1007592132, now seen corresponding path program 1 times [2022-12-14 04:45:11,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:11,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932391322] [2022-12-14 04:45:11,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:11,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:11,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:45:11,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:11,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932391322] [2022-12-14 04:45:11,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932391322] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:11,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:11,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:45:11,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115335674] [2022-12-14 04:45:11,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:11,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:45:11,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:11,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:45:11,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:45:11,228 INFO L87 Difference]: Start difference. First operand 446 states and 1388 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:11,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:11,306 INFO L93 Difference]: Finished difference Result 447 states and 1389 transitions. [2022-12-14 04:45:11,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:45:11,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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 30 [2022-12-14 04:45:11,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:11,309 INFO L225 Difference]: With dead ends: 447 [2022-12-14 04:45:11,309 INFO L226 Difference]: Without dead ends: 447 [2022-12-14 04:45:11,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:45:11,310 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:11,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:45:11,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-12-14 04:45:11,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2022-12-14 04:45:11,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 3.1143497757847536) internal successors, (1389), 446 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:11,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1389 transitions. [2022-12-14 04:45:11,322 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1389 transitions. Word has length 30 [2022-12-14 04:45:11,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:11,322 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 1389 transitions. [2022-12-14 04:45:11,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:11,322 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1389 transitions. [2022-12-14 04:45:11,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-14 04:45:11,323 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:11,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:11,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 04:45:11,324 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)] === [2022-12-14 04:45:11,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:11,324 INFO L85 PathProgramCache]: Analyzing trace with hash -927598647, now seen corresponding path program 1 times [2022-12-14 04:45:11,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:11,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061336955] [2022-12-14 04:45:11,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:11,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:11,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 04:45:11,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:11,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061336955] [2022-12-14 04:45:11,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061336955] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:11,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:11,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:45:11,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270272556] [2022-12-14 04:45:11,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:11,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:45:11,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:11,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:45:11,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:45:11,476 INFO L87 Difference]: Start difference. First operand 447 states and 1389 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:11,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:11,554 INFO L93 Difference]: Finished difference Result 448 states and 1390 transitions. [2022-12-14 04:45:11,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 04:45:11,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2022-12-14 04:45:11,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:11,557 INFO L225 Difference]: With dead ends: 448 [2022-12-14 04:45:11,557 INFO L226 Difference]: Without dead ends: 448 [2022-12-14 04:45:11,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:45:11,558 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:11,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:45:11,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-12-14 04:45:11,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2022-12-14 04:45:11,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 3.1096196868008947) internal successors, (1390), 447 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:11,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 1390 transitions. [2022-12-14 04:45:11,568 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 1390 transitions. Word has length 31 [2022-12-14 04:45:11,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:11,568 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 1390 transitions. [2022-12-14 04:45:11,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:11,568 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1390 transitions. [2022-12-14 04:45:11,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-14 04:45:11,569 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:11,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:11,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 04:45:11,570 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)] === [2022-12-14 04:45:11,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:11,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1491206775, now seen corresponding path program 1 times [2022-12-14 04:45:11,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:11,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732838921] [2022-12-14 04:45:11,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:11,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:11,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 04:45:11,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:11,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732838921] [2022-12-14 04:45:11,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732838921] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:11,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:11,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:45:11,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941722212] [2022-12-14 04:45:11,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:11,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:45:11,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:11,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:45:11,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:45:11,688 INFO L87 Difference]: Start difference. First operand 448 states and 1390 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:11,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:11,766 INFO L93 Difference]: Finished difference Result 449 states and 1391 transitions. [2022-12-14 04:45:11,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 04:45:11,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2022-12-14 04:45:11,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:11,769 INFO L225 Difference]: With dead ends: 449 [2022-12-14 04:45:11,769 INFO L226 Difference]: Without dead ends: 449 [2022-12-14 04:45:11,770 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 [2022-12-14 04:45:11,770 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:11,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:45:11,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-12-14 04:45:11,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2022-12-14 04:45:11,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 3.1049107142857144) internal successors, (1391), 448 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:11,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 1391 transitions. [2022-12-14 04:45:11,783 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 1391 transitions. Word has length 32 [2022-12-14 04:45:11,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:11,783 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 1391 transitions. [2022-12-14 04:45:11,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:11,783 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 1391 transitions. [2022-12-14 04:45:11,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 04:45:11,784 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:11,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:11,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 04:45:11,785 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)] === [2022-12-14 04:45:11,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:11,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1835162981, now seen corresponding path program 1 times [2022-12-14 04:45:11,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:11,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37591986] [2022-12-14 04:45:11,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:11,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:12,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 04:45:12,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:12,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37591986] [2022-12-14 04:45:12,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37591986] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:45:12,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094704356] [2022-12-14 04:45:12,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:12,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:45:12,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:45:12,022 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:45:12,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 04:45:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:12,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 04:45:12,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:45:12,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 04:45:12,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:45:12,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094704356] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:12,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:45:12,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-12-14 04:45:12,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518250240] [2022-12-14 04:45:12,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:12,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:45:12,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:12,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:45:12,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:45:12,189 INFO L87 Difference]: Start difference. First operand 449 states and 1391 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:12,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:12,267 INFO L93 Difference]: Finished difference Result 450 states and 1392 transitions. [2022-12-14 04:45:12,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 04:45:12,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2022-12-14 04:45:12,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:12,269 INFO L225 Difference]: With dead ends: 450 [2022-12-14 04:45:12,269 INFO L226 Difference]: Without dead ends: 450 [2022-12-14 04:45:12,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 04:45:12,270 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:12,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 0 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:45:12,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-12-14 04:45:12,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2022-12-14 04:45:12,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 3.1002227171492205) internal successors, (1392), 449 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:12,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1392 transitions. [2022-12-14 04:45:12,287 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1392 transitions. Word has length 33 [2022-12-14 04:45:12,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:12,288 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 1392 transitions. [2022-12-14 04:45:12,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:12,288 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1392 transitions. [2022-12-14 04:45:12,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 04:45:12,289 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:12,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:12,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 04:45:12,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:45:12,490 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)] === [2022-12-14 04:45:12,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:12,491 INFO L85 PathProgramCache]: Analyzing trace with hash -861673257, now seen corresponding path program 1 times [2022-12-14 04:45:12,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:12,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222390327] [2022-12-14 04:45:12,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:12,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:12,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 04:45:12,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:12,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222390327] [2022-12-14 04:45:12,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222390327] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:12,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:12,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:45:12,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123866809] [2022-12-14 04:45:12,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:12,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:45:12,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:12,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:45:12,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:45:12,663 INFO L87 Difference]: Start difference. First operand 450 states and 1392 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:12,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:12,729 INFO L93 Difference]: Finished difference Result 451 states and 1393 transitions. [2022-12-14 04:45:12,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 04:45:12,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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 34 [2022-12-14 04:45:12,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:12,731 INFO L225 Difference]: With dead ends: 451 [2022-12-14 04:45:12,732 INFO L226 Difference]: Without dead ends: 451 [2022-12-14 04:45:12,732 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 [2022-12-14 04:45:12,732 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:12,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:45:12,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-12-14 04:45:12,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2022-12-14 04:45:12,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 3.0955555555555554) internal successors, (1393), 450 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:12,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 1393 transitions. [2022-12-14 04:45:12,742 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 1393 transitions. Word has length 34 [2022-12-14 04:45:12,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:12,742 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 1393 transitions. [2022-12-14 04:45:12,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:12,743 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 1393 transitions. [2022-12-14 04:45:12,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-14 04:45:12,744 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:12,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:12,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 04:45:12,744 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)] === [2022-12-14 04:45:12,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:12,744 INFO L85 PathProgramCache]: Analyzing trace with hash -694806053, now seen corresponding path program 1 times [2022-12-14 04:45:12,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:12,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410970701] [2022-12-14 04:45:12,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:12,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:12,921 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 04:45:12,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:12,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410970701] [2022-12-14 04:45:12,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410970701] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:45:12,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137461276] [2022-12-14 04:45:12,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:12,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:45:12,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:45:12,923 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:45:12,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 04:45:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:13,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 04:45:13,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:45:13,076 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 04:45:13,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:45:13,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137461276] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:13,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:45:13,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-12-14 04:45:13,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942040981] [2022-12-14 04:45:13,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:13,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:45:13,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:13,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:45:13,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:45:13,078 INFO L87 Difference]: Start difference. First operand 451 states and 1393 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:13,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:13,160 INFO L93 Difference]: Finished difference Result 452 states and 1394 transitions. [2022-12-14 04:45:13,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 04:45:13,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 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 35 [2022-12-14 04:45:13,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:13,163 INFO L225 Difference]: With dead ends: 452 [2022-12-14 04:45:13,163 INFO L226 Difference]: Without dead ends: 452 [2022-12-14 04:45:13,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 04:45:13,164 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:13,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:45:13,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-12-14 04:45:13,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2022-12-14 04:45:13,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 451 states have (on average 3.090909090909091) internal successors, (1394), 451 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:13,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1394 transitions. [2022-12-14 04:45:13,179 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1394 transitions. Word has length 35 [2022-12-14 04:45:13,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:13,179 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 1394 transitions. [2022-12-14 04:45:13,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:13,180 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1394 transitions. [2022-12-14 04:45:13,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:13,181 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:13,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:13,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 04:45:13,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:45:13,382 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)] === [2022-12-14 04:45:13,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:13,383 INFO L85 PathProgramCache]: Analyzing trace with hash 577890407, now seen corresponding path program 1 times [2022-12-14 04:45:13,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:13,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117987312] [2022-12-14 04:45:13,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:13,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:15,289 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:15,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:15,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117987312] [2022-12-14 04:45:15,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117987312] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:15,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:15,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 04:45:15,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252933705] [2022-12-14 04:45:15,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:15,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 04:45:15,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:15,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 04:45:15,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-12-14 04:45:15,291 INFO L87 Difference]: Start difference. First operand 452 states and 1394 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:15,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:15,943 INFO L93 Difference]: Finished difference Result 587 states and 1667 transitions. [2022-12-14 04:45:15,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 04:45:15,943 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:15,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:15,947 INFO L225 Difference]: With dead ends: 587 [2022-12-14 04:45:15,947 INFO L226 Difference]: Without dead ends: 572 [2022-12-14 04:45:15,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2022-12-14 04:45:15,948 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 198 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:15,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 0 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 04:45:15,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-12-14 04:45:15,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 510. [2022-12-14 04:45:15,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 3.0039292730844793) internal successors, (1529), 509 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:15,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 1529 transitions. [2022-12-14 04:45:15,972 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 1529 transitions. Word has length 36 [2022-12-14 04:45:15,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:15,973 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 1529 transitions. [2022-12-14 04:45:15,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:15,973 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 1529 transitions. [2022-12-14 04:45:15,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:15,974 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:15,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:15,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 04:45:15,975 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)] === [2022-12-14 04:45:15,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:15,975 INFO L85 PathProgramCache]: Analyzing trace with hash -772191152, now seen corresponding path program 1 times [2022-12-14 04:45:15,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:15,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818935400] [2022-12-14 04:45:15,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:15,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:16,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:16,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:16,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818935400] [2022-12-14 04:45:16,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818935400] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:16,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:16,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 04:45:16,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020490371] [2022-12-14 04:45:16,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:16,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 04:45:16,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:16,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 04:45:16,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-14 04:45:16,376 INFO L87 Difference]: Start difference. First operand 510 states and 1529 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:16,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:16,621 INFO L93 Difference]: Finished difference Result 738 states and 2087 transitions. [2022-12-14 04:45:16,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 04:45:16,622 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:16,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:16,625 INFO L225 Difference]: With dead ends: 738 [2022-12-14 04:45:16,625 INFO L226 Difference]: Without dead ends: 700 [2022-12-14 04:45:16,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-14 04:45:16,625 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 205 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:16,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 0 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 04:45:16,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-12-14 04:45:16,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 562. [2022-12-14 04:45:16,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 561 states have (on average 2.9180035650623886) internal successors, (1637), 561 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:16,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1637 transitions. [2022-12-14 04:45:16,638 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1637 transitions. Word has length 36 [2022-12-14 04:45:16,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:16,639 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 1637 transitions. [2022-12-14 04:45:16,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:16,639 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1637 transitions. [2022-12-14 04:45:16,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:16,640 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:16,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:16,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 04:45:16,641 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)] === [2022-12-14 04:45:16,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:16,641 INFO L85 PathProgramCache]: Analyzing trace with hash -613773231, now seen corresponding path program 2 times [2022-12-14 04:45:16,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:16,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677418930] [2022-12-14 04:45:16,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:16,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:18,013 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:18,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:18,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677418930] [2022-12-14 04:45:18,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677418930] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:18,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:18,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 04:45:18,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842389372] [2022-12-14 04:45:18,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:18,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 04:45:18,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:18,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 04:45:18,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-12-14 04:45:18,015 INFO L87 Difference]: Start difference. First operand 562 states and 1637 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:18,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:18,590 INFO L93 Difference]: Finished difference Result 633 states and 1764 transitions. [2022-12-14 04:45:18,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 04:45:18,591 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:18,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:18,593 INFO L225 Difference]: With dead ends: 633 [2022-12-14 04:45:18,593 INFO L226 Difference]: Without dead ends: 622 [2022-12-14 04:45:18,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-12-14 04:45:18,593 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 176 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:18,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 0 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 04:45:18,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-12-14 04:45:18,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 568. [2022-12-14 04:45:18,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 567 states have (on average 2.9065255731922397) internal successors, (1648), 567 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:18,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 1648 transitions. [2022-12-14 04:45:18,605 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 1648 transitions. Word has length 36 [2022-12-14 04:45:18,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:18,605 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 1648 transitions. [2022-12-14 04:45:18,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:18,605 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 1648 transitions. [2022-12-14 04:45:18,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:18,606 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:18,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:18,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 04:45:18,607 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:18,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:18,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1145542581, now seen corresponding path program 3 times [2022-12-14 04:45:18,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:18,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517005103] [2022-12-14 04:45:18,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:18,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:19,810 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:19,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:19,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517005103] [2022-12-14 04:45:19,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517005103] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:19,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:19,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 04:45:19,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383243163] [2022-12-14 04:45:19,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:19,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 04:45:19,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:19,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 04:45:19,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-12-14 04:45:19,812 INFO L87 Difference]: Start difference. First operand 568 states and 1648 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:20,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:20,418 INFO L93 Difference]: Finished difference Result 645 states and 1773 transitions. [2022-12-14 04:45:20,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 04:45:20,419 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:20,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:20,420 INFO L225 Difference]: With dead ends: 645 [2022-12-14 04:45:20,421 INFO L226 Difference]: Without dead ends: 606 [2022-12-14 04:45:20,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-12-14 04:45:20,421 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 178 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:20,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 0 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 04:45:20,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2022-12-14 04:45:20,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 543. [2022-12-14 04:45:20,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 542 states have (on average 2.907749077490775) internal successors, (1576), 542 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:20,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 1576 transitions. [2022-12-14 04:45:20,432 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 1576 transitions. Word has length 36 [2022-12-14 04:45:20,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:20,432 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 1576 transitions. [2022-12-14 04:45:20,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:20,432 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 1576 transitions. [2022-12-14 04:45:20,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:20,433 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:20,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:20,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 04:45:20,434 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:20,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:20,434 INFO L85 PathProgramCache]: Analyzing trace with hash 2031199219, now seen corresponding path program 4 times [2022-12-14 04:45:20,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:20,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298096433] [2022-12-14 04:45:20,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:20,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:21,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:21,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:21,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298096433] [2022-12-14 04:45:21,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298096433] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:21,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:21,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 04:45:21,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620351745] [2022-12-14 04:45:21,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:21,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 04:45:21,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:21,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 04:45:21,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-12-14 04:45:21,629 INFO L87 Difference]: Start difference. First operand 543 states and 1576 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:22,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:22,241 INFO L93 Difference]: Finished difference Result 732 states and 1980 transitions. [2022-12-14 04:45:22,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:45:22,241 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:22,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:22,244 INFO L225 Difference]: With dead ends: 732 [2022-12-14 04:45:22,244 INFO L226 Difference]: Without dead ends: 710 [2022-12-14 04:45:22,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2022-12-14 04:45:22,245 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 221 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:22,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 0 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 04:45:22,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-12-14 04:45:22,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 536. [2022-12-14 04:45:22,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 2.9177570093457943) internal successors, (1561), 535 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:22,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1561 transitions. [2022-12-14 04:45:22,262 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1561 transitions. Word has length 36 [2022-12-14 04:45:22,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:22,263 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 1561 transitions. [2022-12-14 04:45:22,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:22,263 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1561 transitions. [2022-12-14 04:45:22,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:22,264 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:22,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:22,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 04:45:22,265 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:22,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:22,265 INFO L85 PathProgramCache]: Analyzing trace with hash 451667935, now seen corresponding path program 5 times [2022-12-14 04:45:22,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:22,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963802590] [2022-12-14 04:45:22,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:22,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:23,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:23,386 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:23,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963802590] [2022-12-14 04:45:23,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963802590] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:23,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:23,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 04:45:23,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105392706] [2022-12-14 04:45:23,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:23,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 04:45:23,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:23,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 04:45:23,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:45:23,387 INFO L87 Difference]: Start difference. First operand 536 states and 1561 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:24,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:24,006 INFO L93 Difference]: Finished difference Result 617 states and 1716 transitions. [2022-12-14 04:45:24,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:45:24,006 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:24,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:24,009 INFO L225 Difference]: With dead ends: 617 [2022-12-14 04:45:24,009 INFO L226 Difference]: Without dead ends: 590 [2022-12-14 04:45:24,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:45:24,009 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 69 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:24,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 0 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 04:45:24,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2022-12-14 04:45:24,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 554. [2022-12-14 04:45:24,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 553 states have (on average 2.8969258589511755) internal successors, (1602), 553 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:24,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 1602 transitions. [2022-12-14 04:45:24,019 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 1602 transitions. Word has length 36 [2022-12-14 04:45:24,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:24,019 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 1602 transitions. [2022-12-14 04:45:24,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:24,019 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 1602 transitions. [2022-12-14 04:45:24,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:24,020 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:24,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:24,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 04:45:24,020 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:24,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:24,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1096972957, now seen corresponding path program 6 times [2022-12-14 04:45:24,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:24,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900912766] [2022-12-14 04:45:24,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:24,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:25,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:25,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:25,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900912766] [2022-12-14 04:45:25,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900912766] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:25,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:25,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 04:45:25,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420921762] [2022-12-14 04:45:25,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:25,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 04:45:25,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:25,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 04:45:25,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:45:25,106 INFO L87 Difference]: Start difference. First operand 554 states and 1602 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:25,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:25,543 INFO L93 Difference]: Finished difference Result 571 states and 1628 transitions. [2022-12-14 04:45:25,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:45:25,543 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:25,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:25,545 INFO L225 Difference]: With dead ends: 571 [2022-12-14 04:45:25,545 INFO L226 Difference]: Without dead ends: 560 [2022-12-14 04:45:25,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:45:25,546 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 50 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:25,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 0 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:45:25,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-12-14 04:45:25,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 556. [2022-12-14 04:45:25,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 2.891891891891892) internal successors, (1605), 555 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:25,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1605 transitions. [2022-12-14 04:45:25,555 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1605 transitions. Word has length 36 [2022-12-14 04:45:25,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:25,555 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 1605 transitions. [2022-12-14 04:45:25,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:25,555 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1605 transitions. [2022-12-14 04:45:25,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:25,556 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:25,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:25,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 04:45:25,557 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:25,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:25,557 INFO L85 PathProgramCache]: Analyzing trace with hash 476277125, now seen corresponding path program 7 times [2022-12-14 04:45:25,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:25,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281331368] [2022-12-14 04:45:25,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:25,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:26,634 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:26,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:26,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281331368] [2022-12-14 04:45:26,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281331368] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:26,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:26,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 04:45:26,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389259845] [2022-12-14 04:45:26,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:26,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 04:45:26,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:26,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 04:45:26,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:45:26,636 INFO L87 Difference]: Start difference. First operand 556 states and 1605 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:27,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:27,110 INFO L93 Difference]: Finished difference Result 569 states and 1622 transitions. [2022-12-14 04:45:27,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:45:27,111 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:27,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:27,113 INFO L225 Difference]: With dead ends: 569 [2022-12-14 04:45:27,113 INFO L226 Difference]: Without dead ends: 550 [2022-12-14 04:45:27,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:45:27,113 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:27,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 0 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:45:27,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2022-12-14 04:45:27,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 546. [2022-12-14 04:45:27,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 545 states have (on average 2.8954128440366973) internal successors, (1578), 545 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:27,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 1578 transitions. [2022-12-14 04:45:27,121 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 1578 transitions. Word has length 36 [2022-12-14 04:45:27,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:27,121 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 1578 transitions. [2022-12-14 04:45:27,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:27,121 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 1578 transitions. [2022-12-14 04:45:27,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:27,122 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:27,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:27,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 04:45:27,122 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:27,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:27,122 INFO L85 PathProgramCache]: Analyzing trace with hash 2069797893, now seen corresponding path program 8 times [2022-12-14 04:45:27,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:27,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768889381] [2022-12-14 04:45:27,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:27,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:27,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:27,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:27,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768889381] [2022-12-14 04:45:27,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768889381] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:27,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:27,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 04:45:27,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193517672] [2022-12-14 04:45:27,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:27,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 04:45:27,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:27,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 04:45:27,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:45:27,934 INFO L87 Difference]: Start difference. First operand 546 states and 1578 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:28,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:28,269 INFO L93 Difference]: Finished difference Result 573 states and 1631 transitions. [2022-12-14 04:45:28,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:45:28,270 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:28,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:28,271 INFO L225 Difference]: With dead ends: 573 [2022-12-14 04:45:28,271 INFO L226 Difference]: Without dead ends: 562 [2022-12-14 04:45:28,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:45:28,272 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:28,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:45:28,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-12-14 04:45:28,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 555. [2022-12-14 04:45:28,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 554 states have (on average 2.888086642599278) internal successors, (1600), 554 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:28,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 1600 transitions. [2022-12-14 04:45:28,280 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 1600 transitions. Word has length 36 [2022-12-14 04:45:28,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:28,280 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 1600 transitions. [2022-12-14 04:45:28,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:28,280 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 1600 transitions. [2022-12-14 04:45:28,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:28,281 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:28,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:28,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 04:45:28,281 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:28,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:28,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1366294873, now seen corresponding path program 9 times [2022-12-14 04:45:28,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:28,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626564573] [2022-12-14 04:45:28,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:28,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:29,058 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:29,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:29,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626564573] [2022-12-14 04:45:29,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626564573] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:29,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:29,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 04:45:29,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830055747] [2022-12-14 04:45:29,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:29,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 04:45:29,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:29,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 04:45:29,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:45:29,060 INFO L87 Difference]: Start difference. First operand 555 states and 1600 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:29,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:29,363 INFO L93 Difference]: Finished difference Result 585 states and 1640 transitions. [2022-12-14 04:45:29,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:45:29,363 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:29,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:29,365 INFO L225 Difference]: With dead ends: 585 [2022-12-14 04:45:29,365 INFO L226 Difference]: Without dead ends: 566 [2022-12-14 04:45:29,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:45:29,365 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 68 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:29,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 0 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 04:45:29,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-12-14 04:45:29,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 550. [2022-12-14 04:45:29,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 549 states have (on average 2.8925318761384333) internal successors, (1588), 549 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:29,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 1588 transitions. [2022-12-14 04:45:29,373 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 1588 transitions. Word has length 36 [2022-12-14 04:45:29,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:29,373 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 1588 transitions. [2022-12-14 04:45:29,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:29,373 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 1588 transitions. [2022-12-14 04:45:29,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:29,374 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:29,374 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:29,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 04:45:29,374 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:29,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:29,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1995901027, now seen corresponding path program 10 times [2022-12-14 04:45:29,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:29,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654778801] [2022-12-14 04:45:29,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:29,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:30,337 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:30,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:30,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654778801] [2022-12-14 04:45:30,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654778801] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:30,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:30,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 04:45:30,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848971703] [2022-12-14 04:45:30,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:30,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 04:45:30,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:30,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 04:45:30,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:45:30,338 INFO L87 Difference]: Start difference. First operand 550 states and 1588 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:30,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:30,700 INFO L93 Difference]: Finished difference Result 565 states and 1611 transitions. [2022-12-14 04:45:30,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:45:30,701 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:30,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:30,702 INFO L225 Difference]: With dead ends: 565 [2022-12-14 04:45:30,702 INFO L226 Difference]: Without dead ends: 554 [2022-12-14 04:45:30,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:45:30,703 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:30,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:45:30,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2022-12-14 04:45:30,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 552. [2022-12-14 04:45:30,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 551 states have (on average 2.8874773139745917) internal successors, (1591), 551 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:30,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 1591 transitions. [2022-12-14 04:45:30,710 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 1591 transitions. Word has length 36 [2022-12-14 04:45:30,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:30,710 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 1591 transitions. [2022-12-14 04:45:30,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:30,710 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 1591 transitions. [2022-12-14 04:45:30,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:30,711 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:30,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:30,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 04:45:30,711 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:30,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:30,712 INFO L85 PathProgramCache]: Analyzing trace with hash -725816187, now seen corresponding path program 11 times [2022-12-14 04:45:30,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:30,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167271865] [2022-12-14 04:45:30,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:30,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:31,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:31,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:31,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167271865] [2022-12-14 04:45:31,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167271865] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:31,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:31,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 04:45:31,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926208382] [2022-12-14 04:45:31,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:31,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 04:45:31,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:31,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 04:45:31,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:45:31,610 INFO L87 Difference]: Start difference. First operand 552 states and 1591 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:31,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:31,941 INFO L93 Difference]: Finished difference Result 563 states and 1605 transitions. [2022-12-14 04:45:31,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:45:31,941 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:31,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:31,943 INFO L225 Difference]: With dead ends: 563 [2022-12-14 04:45:31,943 INFO L226 Difference]: Without dead ends: 552 [2022-12-14 04:45:31,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:45:31,943 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:31,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 04:45:31,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-12-14 04:45:31,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 550. [2022-12-14 04:45:31,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 549 states have (on average 2.888888888888889) internal successors, (1586), 549 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:31,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 1586 transitions. [2022-12-14 04:45:31,951 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 1586 transitions. Word has length 36 [2022-12-14 04:45:31,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:31,951 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 1586 transitions. [2022-12-14 04:45:31,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:31,951 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 1586 transitions. [2022-12-14 04:45:31,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:31,952 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:31,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:31,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 04:45:31,952 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:31,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:31,952 INFO L85 PathProgramCache]: Analyzing trace with hash 159817413, now seen corresponding path program 12 times [2022-12-14 04:45:31,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:31,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763866913] [2022-12-14 04:45:31,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:31,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:32,697 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:32,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:32,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763866913] [2022-12-14 04:45:32,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763866913] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:32,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:32,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 04:45:32,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061892999] [2022-12-14 04:45:32,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:32,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 04:45:32,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:32,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 04:45:32,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:45:32,698 INFO L87 Difference]: Start difference. First operand 550 states and 1586 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:33,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:33,008 INFO L93 Difference]: Finished difference Result 581 states and 1629 transitions. [2022-12-14 04:45:33,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:45:33,009 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:33,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:33,010 INFO L225 Difference]: With dead ends: 581 [2022-12-14 04:45:33,010 INFO L226 Difference]: Without dead ends: 567 [2022-12-14 04:45:33,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:45:33,011 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 59 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:33,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 0 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 04:45:33,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-12-14 04:45:33,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 553. [2022-12-14 04:45:33,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 552 states have (on average 2.880434782608696) internal successors, (1590), 552 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:33,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1590 transitions. [2022-12-14 04:45:33,018 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1590 transitions. Word has length 36 [2022-12-14 04:45:33,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:33,018 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 1590 transitions. [2022-12-14 04:45:33,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:33,018 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1590 transitions. [2022-12-14 04:45:33,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:33,019 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:33,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:33,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-14 04:45:33,019 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:33,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:33,020 INFO L85 PathProgramCache]: Analyzing trace with hash 18886311, now seen corresponding path program 13 times [2022-12-14 04:45:33,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:33,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166839426] [2022-12-14 04:45:33,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:33,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:33,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:33,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166839426] [2022-12-14 04:45:33,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166839426] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:33,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:33,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 04:45:33,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069664572] [2022-12-14 04:45:33,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:33,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 04:45:33,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:33,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 04:45:33,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:45:33,925 INFO L87 Difference]: Start difference. First operand 553 states and 1590 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:34,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:34,285 INFO L93 Difference]: Finished difference Result 567 states and 1609 transitions. [2022-12-14 04:45:34,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:45:34,285 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:34,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:34,287 INFO L225 Difference]: With dead ends: 567 [2022-12-14 04:45:34,287 INFO L226 Difference]: Without dead ends: 540 [2022-12-14 04:45:34,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:45:34,287 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:34,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:45:34,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-12-14 04:45:34,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 535. [2022-12-14 04:45:34,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 534 states have (on average 2.8745318352059925) internal successors, (1535), 534 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:34,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 1535 transitions. [2022-12-14 04:45:34,294 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 1535 transitions. Word has length 36 [2022-12-14 04:45:34,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:34,294 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 1535 transitions. [2022-12-14 04:45:34,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:34,294 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 1535 transitions. [2022-12-14 04:45:34,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:34,295 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:34,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:34,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-14 04:45:34,295 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:34,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:34,296 INFO L85 PathProgramCache]: Analyzing trace with hash 945913601, now seen corresponding path program 14 times [2022-12-14 04:45:34,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:34,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419366914] [2022-12-14 04:45:34,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:34,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:35,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:35,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:35,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419366914] [2022-12-14 04:45:35,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419366914] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:35,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:35,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 04:45:35,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33368373] [2022-12-14 04:45:35,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:35,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 04:45:35,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:35,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 04:45:35,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-14 04:45:35,149 INFO L87 Difference]: Start difference. First operand 535 states and 1535 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:35,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:35,524 INFO L93 Difference]: Finished difference Result 593 states and 1675 transitions. [2022-12-14 04:45:35,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 04:45:35,524 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:35,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:35,526 INFO L225 Difference]: With dead ends: 593 [2022-12-14 04:45:35,526 INFO L226 Difference]: Without dead ends: 582 [2022-12-14 04:45:35,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-12-14 04:45:35,527 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 53 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:35,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 0 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:45:35,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2022-12-14 04:45:35,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 541. [2022-12-14 04:45:35,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 540 states have (on average 2.862962962962963) internal successors, (1546), 540 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:35,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 1546 transitions. [2022-12-14 04:45:35,534 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 1546 transitions. Word has length 36 [2022-12-14 04:45:35,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:35,534 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 1546 transitions. [2022-12-14 04:45:35,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:35,534 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 1546 transitions. [2022-12-14 04:45:35,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:35,535 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:35,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:35,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-14 04:45:35,535 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:35,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:35,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1804788131, now seen corresponding path program 15 times [2022-12-14 04:45:35,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:35,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527895974] [2022-12-14 04:45:35,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:35,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:36,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:36,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:36,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527895974] [2022-12-14 04:45:36,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527895974] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:36,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:36,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 04:45:36,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338000804] [2022-12-14 04:45:36,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:36,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 04:45:36,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:36,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 04:45:36,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-14 04:45:36,351 INFO L87 Difference]: Start difference. First operand 541 states and 1546 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:36,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:36,708 INFO L93 Difference]: Finished difference Result 605 states and 1684 transitions. [2022-12-14 04:45:36,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 04:45:36,708 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:36,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:36,710 INFO L225 Difference]: With dead ends: 605 [2022-12-14 04:45:36,710 INFO L226 Difference]: Without dead ends: 586 [2022-12-14 04:45:36,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-12-14 04:45:36,710 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 62 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:36,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 0 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:45:36,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-12-14 04:45:36,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 536. [2022-12-14 04:45:36,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 2.8710280373831774) internal successors, (1536), 535 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:36,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1536 transitions. [2022-12-14 04:45:36,718 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1536 transitions. Word has length 36 [2022-12-14 04:45:36,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:36,718 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 1536 transitions. [2022-12-14 04:45:36,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:36,718 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1536 transitions. [2022-12-14 04:45:36,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:36,718 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:36,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:36,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-14 04:45:36,719 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:36,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:36,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1336820953, now seen corresponding path program 16 times [2022-12-14 04:45:36,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:36,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774968746] [2022-12-14 04:45:36,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:36,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:37,797 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:37,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:37,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774968746] [2022-12-14 04:45:37,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774968746] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:37,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:37,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 04:45:37,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483960812] [2022-12-14 04:45:37,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:37,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 04:45:37,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:37,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 04:45:37,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-14 04:45:37,798 INFO L87 Difference]: Start difference. First operand 536 states and 1536 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:38,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:38,215 INFO L93 Difference]: Finished difference Result 600 states and 1674 transitions. [2022-12-14 04:45:38,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:45:38,216 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:38,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:38,218 INFO L225 Difference]: With dead ends: 600 [2022-12-14 04:45:38,218 INFO L226 Difference]: Without dead ends: 584 [2022-12-14 04:45:38,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-12-14 04:45:38,218 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 153 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:38,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 0 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:45:38,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-12-14 04:45:38,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 535. [2022-12-14 04:45:38,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 534 states have (on average 2.8726591760299627) internal successors, (1534), 534 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:38,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 1534 transitions. [2022-12-14 04:45:38,226 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 1534 transitions. Word has length 36 [2022-12-14 04:45:38,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:38,226 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 1534 transitions. [2022-12-14 04:45:38,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:38,226 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 1534 transitions. [2022-12-14 04:45:38,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:38,226 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:38,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:38,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-14 04:45:38,227 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:38,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:38,227 INFO L85 PathProgramCache]: Analyzing trace with hash 898088161, now seen corresponding path program 17 times [2022-12-14 04:45:38,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:38,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783209581] [2022-12-14 04:45:38,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:38,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:39,083 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:39,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:39,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783209581] [2022-12-14 04:45:39,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783209581] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:39,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:39,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 04:45:39,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189649005] [2022-12-14 04:45:39,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:39,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 04:45:39,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:39,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 04:45:39,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-14 04:45:39,085 INFO L87 Difference]: Start difference. First operand 535 states and 1534 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:39,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:39,499 INFO L93 Difference]: Finished difference Result 603 states and 1680 transitions. [2022-12-14 04:45:39,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 04:45:39,500 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:39,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:39,502 INFO L225 Difference]: With dead ends: 603 [2022-12-14 04:45:39,502 INFO L226 Difference]: Without dead ends: 588 [2022-12-14 04:45:39,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2022-12-14 04:45:39,502 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 157 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:39,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 0 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:45:39,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-12-14 04:45:39,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 539. [2022-12-14 04:45:39,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 2.8605947955390336) internal successors, (1539), 538 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:39,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 1539 transitions. [2022-12-14 04:45:39,509 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 1539 transitions. Word has length 36 [2022-12-14 04:45:39,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:39,510 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 1539 transitions. [2022-12-14 04:45:39,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:39,510 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 1539 transitions. [2022-12-14 04:45:39,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:39,510 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:39,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:39,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-14 04:45:39,511 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:39,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:39,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1329470109, now seen corresponding path program 18 times [2022-12-14 04:45:39,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:39,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971179023] [2022-12-14 04:45:39,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:39,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:40,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:40,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:40,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971179023] [2022-12-14 04:45:40,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971179023] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:40,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:40,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 04:45:40,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852603882] [2022-12-14 04:45:40,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:40,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 04:45:40,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:40,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 04:45:40,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-14 04:45:40,427 INFO L87 Difference]: Start difference. First operand 539 states and 1539 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:40,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:40,845 INFO L93 Difference]: Finished difference Result 587 states and 1656 transitions. [2022-12-14 04:45:40,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 04:45:40,846 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:40,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:40,847 INFO L225 Difference]: With dead ends: 587 [2022-12-14 04:45:40,847 INFO L226 Difference]: Without dead ends: 567 [2022-12-14 04:45:40,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2022-12-14 04:45:40,848 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 139 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:40,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 0 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:45:40,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-12-14 04:45:40,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 528. [2022-12-14 04:45:40,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 2.8804554079696394) internal successors, (1518), 527 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:40,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1518 transitions. [2022-12-14 04:45:40,855 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1518 transitions. Word has length 36 [2022-12-14 04:45:40,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:40,855 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 1518 transitions. [2022-12-14 04:45:40,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:40,855 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1518 transitions. [2022-12-14 04:45:40,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:40,856 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:40,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:40,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-14 04:45:40,856 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:40,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:40,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1749643955, now seen corresponding path program 19 times [2022-12-14 04:45:40,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:40,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521261409] [2022-12-14 04:45:40,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:40,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:41,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:41,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:41,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521261409] [2022-12-14 04:45:41,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521261409] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:41,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:41,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 04:45:41,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198047498] [2022-12-14 04:45:41,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:41,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 04:45:41,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:41,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 04:45:41,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:45:41,795 INFO L87 Difference]: Start difference. First operand 528 states and 1518 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:42,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:42,235 INFO L93 Difference]: Finished difference Result 579 states and 1603 transitions. [2022-12-14 04:45:42,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 04:45:42,235 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:42,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:42,237 INFO L225 Difference]: With dead ends: 579 [2022-12-14 04:45:42,237 INFO L226 Difference]: Without dead ends: 552 [2022-12-14 04:45:42,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:45:42,237 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 62 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:42,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 0 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:45:42,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-12-14 04:45:42,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 516. [2022-12-14 04:45:42,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 2.89126213592233) internal successors, (1489), 515 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:42,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1489 transitions. [2022-12-14 04:45:42,244 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1489 transitions. Word has length 36 [2022-12-14 04:45:42,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:42,244 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 1489 transitions. [2022-12-14 04:45:42,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:42,244 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1489 transitions. [2022-12-14 04:45:42,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:42,245 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:42,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:42,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-14 04:45:42,245 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:42,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:42,246 INFO L85 PathProgramCache]: Analyzing trace with hash 996682449, now seen corresponding path program 20 times [2022-12-14 04:45:42,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:42,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742765539] [2022-12-14 04:45:42,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:42,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:43,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:43,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:43,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742765539] [2022-12-14 04:45:43,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742765539] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:43,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:43,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 04:45:43,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912815442] [2022-12-14 04:45:43,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:43,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 04:45:43,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:43,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 04:45:43,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:45:43,004 INFO L87 Difference]: Start difference. First operand 516 states and 1489 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:43,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:43,379 INFO L93 Difference]: Finished difference Result 533 states and 1515 transitions. [2022-12-14 04:45:43,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 04:45:43,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:43,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:43,384 INFO L225 Difference]: With dead ends: 533 [2022-12-14 04:45:43,384 INFO L226 Difference]: Without dead ends: 522 [2022-12-14 04:45:43,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:45:43,384 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:43,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:45:43,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-12-14 04:45:43,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 518. [2022-12-14 04:45:43,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 517 states have (on average 2.885880077369439) internal successors, (1492), 517 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:43,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 1492 transitions. [2022-12-14 04:45:43,391 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 1492 transitions. Word has length 36 [2022-12-14 04:45:43,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:43,391 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 1492 transitions. [2022-12-14 04:45:43,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:43,391 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 1492 transitions. [2022-12-14 04:45:43,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:43,392 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:43,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:43,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-14 04:45:43,392 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:43,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:43,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1725034765, now seen corresponding path program 21 times [2022-12-14 04:45:43,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:43,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881596869] [2022-12-14 04:45:43,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:43,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:44,287 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:44,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:44,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881596869] [2022-12-14 04:45:44,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881596869] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:44,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:44,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 04:45:44,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724083877] [2022-12-14 04:45:44,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:44,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 04:45:44,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:44,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 04:45:44,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:45:44,288 INFO L87 Difference]: Start difference. First operand 518 states and 1492 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:44,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:44,579 INFO L93 Difference]: Finished difference Result 531 states and 1509 transitions. [2022-12-14 04:45:44,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 04:45:44,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:44,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:44,580 INFO L225 Difference]: With dead ends: 531 [2022-12-14 04:45:44,580 INFO L226 Difference]: Without dead ends: 512 [2022-12-14 04:45:44,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:45:44,581 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:44,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 0 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 04:45:44,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-12-14 04:45:44,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 498. [2022-12-14 04:45:44,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 2.893360160965795) internal successors, (1438), 497 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:44,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1438 transitions. [2022-12-14 04:45:44,588 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1438 transitions. Word has length 36 [2022-12-14 04:45:44,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:44,588 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 1438 transitions. [2022-12-14 04:45:44,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:44,588 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1438 transitions. [2022-12-14 04:45:44,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:44,589 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:44,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:44,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-14 04:45:44,589 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:44,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:44,589 INFO L85 PathProgramCache]: Analyzing trace with hash 471562793, now seen corresponding path program 22 times [2022-12-14 04:45:44,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:44,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584633632] [2022-12-14 04:45:44,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:44,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:45,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:45,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:45,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584633632] [2022-12-14 04:45:45,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584633632] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:45,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:45,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 04:45:45,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996517210] [2022-12-14 04:45:45,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:45,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 04:45:45,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:45,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 04:45:45,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:45:45,402 INFO L87 Difference]: Start difference. First operand 498 states and 1438 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:45,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:45,696 INFO L93 Difference]: Finished difference Result 527 states and 1497 transitions. [2022-12-14 04:45:45,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 04:45:45,697 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:45,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:45,699 INFO L225 Difference]: With dead ends: 527 [2022-12-14 04:45:45,699 INFO L226 Difference]: Without dead ends: 516 [2022-12-14 04:45:45,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:45:45,700 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:45,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 0 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 04:45:45,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-12-14 04:45:45,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 512. [2022-12-14 04:45:45,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 2.8864970645792565) internal successors, (1475), 511 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:45,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 1475 transitions. [2022-12-14 04:45:45,706 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 1475 transitions. Word has length 36 [2022-12-14 04:45:45,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:45,706 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 1475 transitions. [2022-12-14 04:45:45,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:45,706 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 1475 transitions. [2022-12-14 04:45:45,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:45,707 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:45,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:45,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-14 04:45:45,707 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:45,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:45,707 INFO L85 PathProgramCache]: Analyzing trace with hash 2044812875, now seen corresponding path program 23 times [2022-12-14 04:45:45,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:45,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847080793] [2022-12-14 04:45:45,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:45,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:46,563 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:46,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:46,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847080793] [2022-12-14 04:45:46,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847080793] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:46,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:46,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 04:45:46,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117684425] [2022-12-14 04:45:46,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:46,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 04:45:46,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:46,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 04:45:46,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:45:46,565 INFO L87 Difference]: Start difference. First operand 512 states and 1475 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:46,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:46,878 INFO L93 Difference]: Finished difference Result 525 states and 1491 transitions. [2022-12-14 04:45:46,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 04:45:46,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:46,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:46,880 INFO L225 Difference]: With dead ends: 525 [2022-12-14 04:45:46,880 INFO L226 Difference]: Without dead ends: 514 [2022-12-14 04:45:46,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:45:46,880 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:46,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 0 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 04:45:46,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-12-14 04:45:46,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 510. [2022-12-14 04:45:46,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 2.8840864440078584) internal successors, (1468), 509 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:46,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 1468 transitions. [2022-12-14 04:45:46,887 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 1468 transitions. Word has length 36 [2022-12-14 04:45:46,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:46,887 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 1468 transitions. [2022-12-14 04:45:46,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:46,887 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 1468 transitions. [2022-12-14 04:45:46,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:46,887 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:46,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:46,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-14 04:45:46,888 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:46,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:46,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1293353451, now seen corresponding path program 24 times [2022-12-14 04:45:46,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:46,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348337626] [2022-12-14 04:45:46,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:46,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:47,761 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:47,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:47,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348337626] [2022-12-14 04:45:47,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348337626] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:47,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:47,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 04:45:47,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611140406] [2022-12-14 04:45:47,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:47,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 04:45:47,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:47,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 04:45:47,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:45:47,762 INFO L87 Difference]: Start difference. First operand 510 states and 1468 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:48,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:48,205 INFO L93 Difference]: Finished difference Result 543 states and 1513 transitions. [2022-12-14 04:45:48,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 04:45:48,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:48,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:48,206 INFO L225 Difference]: With dead ends: 543 [2022-12-14 04:45:48,207 INFO L226 Difference]: Without dead ends: 522 [2022-12-14 04:45:48,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:45:48,207 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 55 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:48,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 0 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:45:48,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-12-14 04:45:48,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 510. [2022-12-14 04:45:48,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 2.8447937131630647) internal successors, (1448), 509 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:48,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 1448 transitions. [2022-12-14 04:45:48,214 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 1448 transitions. Word has length 36 [2022-12-14 04:45:48,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:48,214 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 1448 transitions. [2022-12-14 04:45:48,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:48,214 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 1448 transitions. [2022-12-14 04:45:48,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:48,214 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:48,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:48,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-14 04:45:48,215 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:48,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:48,215 INFO L85 PathProgramCache]: Analyzing trace with hash -344812685, now seen corresponding path program 25 times [2022-12-14 04:45:48,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:48,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136985399] [2022-12-14 04:45:48,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:48,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:48,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:48,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:48,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136985399] [2022-12-14 04:45:48,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136985399] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:48,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:48,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 04:45:48,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441893863] [2022-12-14 04:45:48,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:48,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 04:45:48,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:48,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 04:45:48,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:45:48,896 INFO L87 Difference]: Start difference. First operand 510 states and 1448 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:49,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:49,176 INFO L93 Difference]: Finished difference Result 593 states and 1660 transitions. [2022-12-14 04:45:49,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 04:45:49,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:49,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:49,178 INFO L225 Difference]: With dead ends: 593 [2022-12-14 04:45:49,178 INFO L226 Difference]: Without dead ends: 578 [2022-12-14 04:45:49,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-12-14 04:45:49,178 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 38 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:49,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 0 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 04:45:49,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-12-14 04:45:49,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 536. [2022-12-14 04:45:49,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 2.8654205607476637) internal successors, (1533), 535 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:49,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1533 transitions. [2022-12-14 04:45:49,185 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1533 transitions. Word has length 36 [2022-12-14 04:45:49,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:49,186 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 1533 transitions. [2022-12-14 04:45:49,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:49,186 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1533 transitions. [2022-12-14 04:45:49,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:49,186 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:49,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:49,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-14 04:45:49,187 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:49,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:49,187 INFO L85 PathProgramCache]: Analyzing trace with hash 514061845, now seen corresponding path program 26 times [2022-12-14 04:45:49,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:49,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522286045] [2022-12-14 04:45:49,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:49,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:49,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:49,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:49,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:49,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522286045] [2022-12-14 04:45:49,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522286045] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:49,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:49,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 04:45:49,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237536361] [2022-12-14 04:45:49,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:49,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 04:45:49,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:49,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 04:45:49,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:45:49,808 INFO L87 Difference]: Start difference. First operand 536 states and 1533 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:50,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:50,064 INFO L93 Difference]: Finished difference Result 601 states and 1658 transitions. [2022-12-14 04:45:50,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:45:50,064 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:50,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:50,066 INFO L225 Difference]: With dead ends: 601 [2022-12-14 04:45:50,066 INFO L226 Difference]: Without dead ends: 577 [2022-12-14 04:45:50,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:45:50,066 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:50,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 04:45:50,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-12-14 04:45:50,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 531. [2022-12-14 04:45:50,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 530 states have (on average 2.869811320754717) internal successors, (1521), 530 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:50,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 1521 transitions. [2022-12-14 04:45:50,073 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 1521 transitions. Word has length 36 [2022-12-14 04:45:50,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:50,073 INFO L495 AbstractCegarLoop]: Abstraction has 531 states and 1521 transitions. [2022-12-14 04:45:50,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:50,073 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 1521 transitions. [2022-12-14 04:45:50,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:50,074 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:50,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:50,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-14 04:45:50,074 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:50,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:50,074 INFO L85 PathProgramCache]: Analyzing trace with hash -418709551, now seen corresponding path program 27 times [2022-12-14 04:45:50,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:50,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009031323] [2022-12-14 04:45:50,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:50,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:50,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:50,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:50,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009031323] [2022-12-14 04:45:50,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009031323] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:50,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:50,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 04:45:50,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056749532] [2022-12-14 04:45:50,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:50,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 04:45:50,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:50,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 04:45:50,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:45:50,766 INFO L87 Difference]: Start difference. First operand 531 states and 1521 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:50,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:50,995 INFO L93 Difference]: Finished difference Result 576 states and 1617 transitions. [2022-12-14 04:45:50,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 04:45:50,996 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:50,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:50,997 INFO L225 Difference]: With dead ends: 576 [2022-12-14 04:45:50,997 INFO L226 Difference]: Without dead ends: 561 [2022-12-14 04:45:50,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:45:50,997 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:50,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 04:45:50,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-12-14 04:45:51,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 533. [2022-12-14 04:45:51,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 532 states have (on average 2.8646616541353382) internal successors, (1524), 532 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:51,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 1524 transitions. [2022-12-14 04:45:51,004 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 1524 transitions. Word has length 36 [2022-12-14 04:45:51,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:51,004 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 1524 transitions. [2022-12-14 04:45:51,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:51,004 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 1524 transitions. [2022-12-14 04:45:51,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:51,005 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:51,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:51,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-12-14 04:45:51,005 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:51,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:51,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1154540531, now seen corresponding path program 28 times [2022-12-14 04:45:51,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:51,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861079790] [2022-12-14 04:45:51,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:51,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:51,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:51,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:51,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861079790] [2022-12-14 04:45:51,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861079790] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:51,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:51,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 04:45:51,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070103670] [2022-12-14 04:45:51,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:51,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 04:45:51,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:51,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 04:45:51,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:45:51,801 INFO L87 Difference]: Start difference. First operand 533 states and 1524 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:52,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:52,021 INFO L93 Difference]: Finished difference Result 570 states and 1602 transitions. [2022-12-14 04:45:52,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:45:52,022 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:52,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:52,023 INFO L225 Difference]: With dead ends: 570 [2022-12-14 04:45:52,023 INFO L226 Difference]: Without dead ends: 557 [2022-12-14 04:45:52,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-14 04:45:52,024 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:52,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 04:45:52,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-12-14 04:45:52,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 531. [2022-12-14 04:45:52,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 530 states have (on average 2.8660377358490567) internal successors, (1519), 530 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:52,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 1519 transitions. [2022-12-14 04:45:52,032 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 1519 transitions. Word has length 36 [2022-12-14 04:45:52,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:52,032 INFO L495 AbstractCegarLoop]: Abstraction has 531 states and 1519 transitions. [2022-12-14 04:45:52,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:52,032 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 1519 transitions. [2022-12-14 04:45:52,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:52,033 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:52,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:52,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-14 04:45:52,033 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:52,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:52,033 INFO L85 PathProgramCache]: Analyzing trace with hash 2040174131, now seen corresponding path program 29 times [2022-12-14 04:45:52,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:52,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120291512] [2022-12-14 04:45:52,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:52,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:52,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:52,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:52,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120291512] [2022-12-14 04:45:52,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120291512] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:52,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:52,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 04:45:52,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991040941] [2022-12-14 04:45:52,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:52,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 04:45:52,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:52,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 04:45:52,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:45:52,690 INFO L87 Difference]: Start difference. First operand 531 states and 1519 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:52,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:52,934 INFO L93 Difference]: Finished difference Result 586 states and 1621 transitions. [2022-12-14 04:45:52,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 04:45:52,934 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:52,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:52,935 INFO L225 Difference]: With dead ends: 586 [2022-12-14 04:45:52,936 INFO L226 Difference]: Without dead ends: 572 [2022-12-14 04:45:52,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 04:45:52,936 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:52,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 04:45:52,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-12-14 04:45:52,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 534. [2022-12-14 04:45:52,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 533 states have (on average 2.8574108818011257) internal successors, (1523), 533 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:52,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 1523 transitions. [2022-12-14 04:45:52,943 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 1523 transitions. Word has length 36 [2022-12-14 04:45:52,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:52,943 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 1523 transitions. [2022-12-14 04:45:52,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:52,943 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 1523 transitions. [2022-12-14 04:45:52,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:52,943 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:52,944 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:52,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-12-14 04:45:52,944 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:52,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:52,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1899243029, now seen corresponding path program 30 times [2022-12-14 04:45:52,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:52,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674955520] [2022-12-14 04:45:52,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:52,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:53,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:53,789 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:53,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674955520] [2022-12-14 04:45:53,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674955520] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:53,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:53,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 04:45:53,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352658755] [2022-12-14 04:45:53,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:53,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 04:45:53,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:53,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 04:45:53,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:45:53,790 INFO L87 Difference]: Start difference. First operand 534 states and 1523 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:54,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:54,006 INFO L93 Difference]: Finished difference Result 572 states and 1601 transitions. [2022-12-14 04:45:54,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 04:45:54,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:54,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:54,008 INFO L225 Difference]: With dead ends: 572 [2022-12-14 04:45:54,008 INFO L226 Difference]: Without dead ends: 554 [2022-12-14 04:45:54,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 04:45:54,008 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:54,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 04:45:54,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2022-12-14 04:45:54,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 528. [2022-12-14 04:45:54,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 2.859582542694497) internal successors, (1507), 527 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:54,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1507 transitions. [2022-12-14 04:45:54,015 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1507 transitions. Word has length 36 [2022-12-14 04:45:54,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:54,015 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 1507 transitions. [2022-12-14 04:45:54,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:54,015 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1507 transitions. [2022-12-14 04:45:54,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:54,016 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:54,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:54,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-12-14 04:45:54,016 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:54,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:54,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1861375785, now seen corresponding path program 31 times [2022-12-14 04:45:54,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:54,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94862631] [2022-12-14 04:45:54,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:54,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:54,880 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:54,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:54,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94862631] [2022-12-14 04:45:54,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94862631] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:54,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:54,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 04:45:54,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309033863] [2022-12-14 04:45:54,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:54,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 04:45:54,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:54,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 04:45:54,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:45:54,881 INFO L87 Difference]: Start difference. First operand 528 states and 1507 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:55,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:55,125 INFO L93 Difference]: Finished difference Result 566 states and 1586 transitions. [2022-12-14 04:45:55,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 04:45:55,125 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:55,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:55,126 INFO L225 Difference]: With dead ends: 566 [2022-12-14 04:45:55,126 INFO L226 Difference]: Without dead ends: 555 [2022-12-14 04:45:55,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-14 04:45:55,127 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:55,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 04:45:55,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-12-14 04:45:55,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 542. [2022-12-14 04:45:55,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 2.8539741219963033) internal successors, (1544), 541 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:55,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1544 transitions. [2022-12-14 04:45:55,134 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1544 transitions. Word has length 36 [2022-12-14 04:45:55,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:55,134 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 1544 transitions. [2022-12-14 04:45:55,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:55,134 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1544 transitions. [2022-12-14 04:45:55,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:55,135 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:55,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:55,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-12-14 04:45:55,135 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:55,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:55,135 INFO L85 PathProgramCache]: Analyzing trace with hash -860341429, now seen corresponding path program 32 times [2022-12-14 04:45:55,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:55,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994282117] [2022-12-14 04:45:55,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:55,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:56,089 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:56,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:56,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994282117] [2022-12-14 04:45:56,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994282117] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:56,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:56,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 04:45:56,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070729065] [2022-12-14 04:45:56,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:56,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 04:45:56,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:56,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 04:45:56,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:45:56,090 INFO L87 Difference]: Start difference. First operand 542 states and 1544 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:56,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:56,395 INFO L93 Difference]: Finished difference Result 564 states and 1580 transitions. [2022-12-14 04:45:56,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 04:45:56,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:56,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:56,396 INFO L225 Difference]: With dead ends: 564 [2022-12-14 04:45:56,396 INFO L226 Difference]: Without dead ends: 553 [2022-12-14 04:45:56,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 04:45:56,397 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:56,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:45:56,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-12-14 04:45:56,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 540. [2022-12-14 04:45:56,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 539 states have (on average 2.8515769944341374) internal successors, (1537), 539 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:56,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 1537 transitions. [2022-12-14 04:45:56,403 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 1537 transitions. Word has length 36 [2022-12-14 04:45:56,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:56,404 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 1537 transitions. [2022-12-14 04:45:56,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:56,404 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 1537 transitions. [2022-12-14 04:45:56,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:56,404 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:56,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:56,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-12-14 04:45:56,405 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:56,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:56,405 INFO L85 PathProgramCache]: Analyzing trace with hash 96459541, now seen corresponding path program 33 times [2022-12-14 04:45:56,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:56,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13646955] [2022-12-14 04:45:56,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:56,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:57,273 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:57,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:57,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13646955] [2022-12-14 04:45:57,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13646955] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:57,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:57,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 04:45:57,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799640955] [2022-12-14 04:45:57,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:57,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 04:45:57,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:57,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 04:45:57,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:45:57,275 INFO L87 Difference]: Start difference. First operand 540 states and 1537 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:57,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:57,658 INFO L93 Difference]: Finished difference Result 582 states and 1602 transitions. [2022-12-14 04:45:57,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 04:45:57,658 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:57,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:57,660 INFO L225 Difference]: With dead ends: 582 [2022-12-14 04:45:57,660 INFO L226 Difference]: Without dead ends: 569 [2022-12-14 04:45:57,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-14 04:45:57,660 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:57,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 0 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:45:57,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-12-14 04:45:57,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 528. [2022-12-14 04:45:57,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 2.855787476280835) internal successors, (1505), 527 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:57,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1505 transitions. [2022-12-14 04:45:57,667 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1505 transitions. Word has length 36 [2022-12-14 04:45:57,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:57,667 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 1505 transitions. [2022-12-14 04:45:57,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:57,667 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1505 transitions. [2022-12-14 04:45:57,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:57,668 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:57,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:57,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-12-14 04:45:57,668 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:57,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:57,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1636233129, now seen corresponding path program 34 times [2022-12-14 04:45:57,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:57,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212514066] [2022-12-14 04:45:57,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:57,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:58,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:58,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212514066] [2022-12-14 04:45:58,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212514066] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:58,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:58,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 04:45:58,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793463443] [2022-12-14 04:45:58,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:58,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 04:45:58,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:58,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 04:45:58,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:45:58,368 INFO L87 Difference]: Start difference. First operand 528 states and 1505 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:58,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:58,668 INFO L93 Difference]: Finished difference Result 619 states and 1669 transitions. [2022-12-14 04:45:58,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 04:45:58,669 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:58,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:58,670 INFO L225 Difference]: With dead ends: 619 [2022-12-14 04:45:58,670 INFO L226 Difference]: Without dead ends: 605 [2022-12-14 04:45:58,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:45:58,670 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 51 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:58,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 0 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 04:45:58,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2022-12-14 04:45:58,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 549. [2022-12-14 04:45:58,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 548 states have (on average 2.841240875912409) internal successors, (1557), 548 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:58,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1557 transitions. [2022-12-14 04:45:58,678 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1557 transitions. Word has length 36 [2022-12-14 04:45:58,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:58,678 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 1557 transitions. [2022-12-14 04:45:58,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:58,678 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1557 transitions. [2022-12-14 04:45:58,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:58,679 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:58,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:58,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-12-14 04:45:58,679 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:58,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:58,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1495302027, now seen corresponding path program 35 times [2022-12-14 04:45:58,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:58,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691423762] [2022-12-14 04:45:58,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:58,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:45:59,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:45:59,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:45:59,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691423762] [2022-12-14 04:45:59,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691423762] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:45:59,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:45:59,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 04:45:59,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134034676] [2022-12-14 04:45:59,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:45:59,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 04:45:59,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:45:59,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 04:45:59,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:45:59,422 INFO L87 Difference]: Start difference. First operand 549 states and 1557 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:59,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:45:59,713 INFO L93 Difference]: Finished difference Result 605 states and 1649 transitions. [2022-12-14 04:45:59,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 04:45:59,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2022-12-14 04:45:59,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:45:59,715 INFO L225 Difference]: With dead ends: 605 [2022-12-14 04:45:59,715 INFO L226 Difference]: Without dead ends: 593 [2022-12-14 04:45:59,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:45:59,716 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:45:59,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 0 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 04:45:59,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-12-14 04:45:59,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 546. [2022-12-14 04:45:59,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 545 states have (on average 2.838532110091743) internal successors, (1547), 545 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:59,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 1547 transitions. [2022-12-14 04:45:59,723 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 1547 transitions. Word has length 36 [2022-12-14 04:45:59,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:45:59,723 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 1547 transitions. [2022-12-14 04:45:59,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:45:59,723 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 1547 transitions. [2022-12-14 04:45:59,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:45:59,724 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:45:59,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:45:59,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-12-14 04:45:59,724 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:45:59,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:45:59,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1707400499, now seen corresponding path program 36 times [2022-12-14 04:45:59,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:45:59,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659184795] [2022-12-14 04:45:59,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:45:59,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:45:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:00,618 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:00,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:00,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659184795] [2022-12-14 04:46:00,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659184795] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:00,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:00,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 04:46:00,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64963956] [2022-12-14 04:46:00,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:00,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 04:46:00,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:00,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 04:46:00,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 04:46:00,620 INFO L87 Difference]: Start difference. First operand 546 states and 1547 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:01,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:01,038 INFO L93 Difference]: Finished difference Result 607 states and 1641 transitions. [2022-12-14 04:46:01,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 04:46:01,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:01,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:01,040 INFO L225 Difference]: With dead ends: 607 [2022-12-14 04:46:01,040 INFO L226 Difference]: Without dead ends: 578 [2022-12-14 04:46:01,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:46:01,040 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 53 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:01,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 0 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:46:01,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-12-14 04:46:01,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 528. [2022-12-14 04:46:01,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 2.8330170777988615) internal successors, (1493), 527 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:01,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1493 transitions. [2022-12-14 04:46:01,047 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1493 transitions. Word has length 36 [2022-12-14 04:46:01,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:01,047 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 1493 transitions. [2022-12-14 04:46:01,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:01,047 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1493 transitions. [2022-12-14 04:46:01,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:01,048 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:01,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:01,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-12-14 04:46:01,048 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:01,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:01,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1652286669, now seen corresponding path program 37 times [2022-12-14 04:46:01,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:01,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965591255] [2022-12-14 04:46:01,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:01,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:01,857 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:01,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:01,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965591255] [2022-12-14 04:46:01,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965591255] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:01,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:01,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 04:46:01,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745745138] [2022-12-14 04:46:01,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:01,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 04:46:01,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:01,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 04:46:01,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-14 04:46:01,859 INFO L87 Difference]: Start difference. First operand 528 states and 1493 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:02,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:02,259 INFO L93 Difference]: Finished difference Result 554 states and 1541 transitions. [2022-12-14 04:46:02,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:46:02,259 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:02,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:02,260 INFO L225 Difference]: With dead ends: 554 [2022-12-14 04:46:02,260 INFO L226 Difference]: Without dead ends: 543 [2022-12-14 04:46:02,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-12-14 04:46:02,261 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 129 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:02,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 0 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:46:02,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-12-14 04:46:02,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 534. [2022-12-14 04:46:02,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 533 states have (on average 2.821763602251407) internal successors, (1504), 533 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:02,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 1504 transitions. [2022-12-14 04:46:02,267 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 1504 transitions. Word has length 36 [2022-12-14 04:46:02,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:02,267 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 1504 transitions. [2022-12-14 04:46:02,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:02,268 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 1504 transitions. [2022-12-14 04:46:02,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:02,268 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:02,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:02,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-12-14 04:46:02,268 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:02,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:02,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1783806097, now seen corresponding path program 38 times [2022-12-14 04:46:02,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:02,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930287075] [2022-12-14 04:46:02,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:02,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:03,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:03,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:03,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930287075] [2022-12-14 04:46:03,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930287075] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:03,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:03,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 04:46:03,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490658411] [2022-12-14 04:46:03,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:03,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 04:46:03,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:03,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 04:46:03,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-14 04:46:03,105 INFO L87 Difference]: Start difference. First operand 534 states and 1504 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:03,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:03,448 INFO L93 Difference]: Finished difference Result 558 states and 1543 transitions. [2022-12-14 04:46:03,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:46:03,448 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:03,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:03,450 INFO L225 Difference]: With dead ends: 558 [2022-12-14 04:46:03,450 INFO L226 Difference]: Without dead ends: 539 [2022-12-14 04:46:03,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2022-12-14 04:46:03,451 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 139 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:03,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 0 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:46:03,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2022-12-14 04:46:03,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 529. [2022-12-14 04:46:03,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 528 states have (on average 2.8295454545454546) internal successors, (1494), 528 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:03,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 1494 transitions. [2022-12-14 04:46:03,457 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 1494 transitions. Word has length 36 [2022-12-14 04:46:03,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:03,458 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 1494 transitions. [2022-12-14 04:46:03,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:03,458 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 1494 transitions. [2022-12-14 04:46:03,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:03,458 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:03,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:03,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-12-14 04:46:03,458 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:03,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:03,459 INFO L85 PathProgramCache]: Analyzing trace with hash -630447885, now seen corresponding path program 39 times [2022-12-14 04:46:03,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:03,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991355864] [2022-12-14 04:46:03,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:03,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:04,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:04,248 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:04,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991355864] [2022-12-14 04:46:04,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991355864] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:04,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:04,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 04:46:04,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46134216] [2022-12-14 04:46:04,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:04,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 04:46:04,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:04,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 04:46:04,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-12-14 04:46:04,249 INFO L87 Difference]: Start difference. First operand 529 states and 1494 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:04,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:04,505 INFO L93 Difference]: Finished difference Result 553 states and 1533 transitions. [2022-12-14 04:46:04,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 04:46:04,505 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:04,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:04,506 INFO L225 Difference]: With dead ends: 553 [2022-12-14 04:46:04,506 INFO L226 Difference]: Without dead ends: 537 [2022-12-14 04:46:04,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-12-14 04:46:04,507 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 139 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:04,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 0 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 04:46:04,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-12-14 04:46:04,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 528. [2022-12-14 04:46:04,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 2.8311195445920303) internal successors, (1492), 527 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:04,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1492 transitions. [2022-12-14 04:46:04,513 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1492 transitions. Word has length 36 [2022-12-14 04:46:04,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:04,514 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 1492 transitions. [2022-12-14 04:46:04,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:04,514 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1492 transitions. [2022-12-14 04:46:04,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:04,514 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:04,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:04,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-12-14 04:46:04,515 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:04,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:04,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1604461229, now seen corresponding path program 40 times [2022-12-14 04:46:04,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:04,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760554856] [2022-12-14 04:46:04,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:04,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:05,359 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:05,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:05,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760554856] [2022-12-14 04:46:05,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760554856] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:05,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:05,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 04:46:05,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298363174] [2022-12-14 04:46:05,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:05,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 04:46:05,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:05,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 04:46:05,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-12-14 04:46:05,361 INFO L87 Difference]: Start difference. First operand 528 states and 1492 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:05,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:05,653 INFO L93 Difference]: Finished difference Result 566 states and 1550 transitions. [2022-12-14 04:46:05,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 04:46:05,653 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:05,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:05,654 INFO L225 Difference]: With dead ends: 566 [2022-12-14 04:46:05,654 INFO L226 Difference]: Without dead ends: 551 [2022-12-14 04:46:05,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2022-12-14 04:46:05,654 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 151 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:05,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 0 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 04:46:05,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-12-14 04:46:05,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 532. [2022-12-14 04:46:05,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 531 states have (on average 2.8192090395480225) internal successors, (1497), 531 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:05,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 1497 transitions. [2022-12-14 04:46:05,661 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 1497 transitions. Word has length 36 [2022-12-14 04:46:05,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:05,661 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 1497 transitions. [2022-12-14 04:46:05,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:05,661 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 1497 transitions. [2022-12-14 04:46:05,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:05,662 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:05,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:05,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-12-14 04:46:05,662 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:05,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:05,662 INFO L85 PathProgramCache]: Analyzing trace with hash 2035843177, now seen corresponding path program 41 times [2022-12-14 04:46:05,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:05,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951210863] [2022-12-14 04:46:05,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:05,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:06,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:06,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:06,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951210863] [2022-12-14 04:46:06,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951210863] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:06,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:06,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 04:46:06,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397737953] [2022-12-14 04:46:06,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:06,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 04:46:06,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:06,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 04:46:06,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-14 04:46:06,528 INFO L87 Difference]: Start difference. First operand 532 states and 1497 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:06,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:06,797 INFO L93 Difference]: Finished difference Result 550 states and 1526 transitions. [2022-12-14 04:46:06,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 04:46:06,798 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:06,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:06,799 INFO L225 Difference]: With dead ends: 550 [2022-12-14 04:46:06,799 INFO L226 Difference]: Without dead ends: 536 [2022-12-14 04:46:06,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2022-12-14 04:46:06,799 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 124 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:06,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 0 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 04:46:06,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-12-14 04:46:06,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 527. [2022-12-14 04:46:06,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 526 states have (on average 2.8307984790874525) internal successors, (1489), 526 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:06,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 1489 transitions. [2022-12-14 04:46:06,805 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 1489 transitions. Word has length 36 [2022-12-14 04:46:06,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:06,806 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 1489 transitions. [2022-12-14 04:46:06,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:06,806 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 1489 transitions. [2022-12-14 04:46:06,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:06,806 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:06,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:06,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-12-14 04:46:06,806 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:06,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:06,807 INFO L85 PathProgramCache]: Analyzing trace with hash 26106839, now seen corresponding path program 42 times [2022-12-14 04:46:06,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:06,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995327613] [2022-12-14 04:46:06,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:06,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:07,595 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:07,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:07,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995327613] [2022-12-14 04:46:07,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995327613] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:07,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:07,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 04:46:07,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467125830] [2022-12-14 04:46:07,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:07,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 04:46:07,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:07,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 04:46:07,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:46:07,596 INFO L87 Difference]: Start difference. First operand 527 states and 1489 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:07,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:07,877 INFO L93 Difference]: Finished difference Result 547 states and 1522 transitions. [2022-12-14 04:46:07,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:46:07,878 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:07,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:07,879 INFO L225 Difference]: With dead ends: 547 [2022-12-14 04:46:07,879 INFO L226 Difference]: Without dead ends: 536 [2022-12-14 04:46:07,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:46:07,879 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 61 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:07,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 0 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 04:46:07,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-12-14 04:46:07,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 532. [2022-12-14 04:46:07,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 531 states have (on average 2.8210922787193975) internal successors, (1498), 531 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:07,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 1498 transitions. [2022-12-14 04:46:07,886 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 1498 transitions. Word has length 36 [2022-12-14 04:46:07,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:07,887 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 1498 transitions. [2022-12-14 04:46:07,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:07,887 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 1498 transitions. [2022-12-14 04:46:07,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:07,888 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:07,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:07,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-12-14 04:46:07,888 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:07,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:07,889 INFO L85 PathProgramCache]: Analyzing trace with hash 884981369, now seen corresponding path program 43 times [2022-12-14 04:46:07,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:07,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447360726] [2022-12-14 04:46:07,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:07,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:08,703 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:08,703 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:08,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447360726] [2022-12-14 04:46:08,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447360726] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:08,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:08,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 04:46:08,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189580738] [2022-12-14 04:46:08,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:08,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 04:46:08,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:08,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 04:46:08,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:46:08,705 INFO L87 Difference]: Start difference. First operand 532 states and 1498 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:09,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:09,057 INFO L93 Difference]: Finished difference Result 558 states and 1530 transitions. [2022-12-14 04:46:09,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:46:09,057 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:09,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:09,059 INFO L225 Difference]: With dead ends: 558 [2022-12-14 04:46:09,059 INFO L226 Difference]: Without dead ends: 539 [2022-12-14 04:46:09,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:46:09,060 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 56 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:09,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 0 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:46:09,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2022-12-14 04:46:09,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 527. [2022-12-14 04:46:09,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 526 states have (on average 2.8250950570342206) internal successors, (1486), 526 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:09,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 1486 transitions. [2022-12-14 04:46:09,070 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 1486 transitions. Word has length 36 [2022-12-14 04:46:09,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:09,070 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 1486 transitions. [2022-12-14 04:46:09,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:09,070 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 1486 transitions. [2022-12-14 04:46:09,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:09,071 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:09,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:09,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-12-14 04:46:09,071 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:09,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:09,072 INFO L85 PathProgramCache]: Analyzing trace with hash -47790027, now seen corresponding path program 44 times [2022-12-14 04:46:09,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:09,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448942495] [2022-12-14 04:46:09,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:09,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:10,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:10,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:10,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448942495] [2022-12-14 04:46:10,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448942495] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:10,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:10,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 04:46:10,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107559645] [2022-12-14 04:46:10,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:10,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 04:46:10,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:10,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 04:46:10,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:46:10,134 INFO L87 Difference]: Start difference. First operand 527 states and 1486 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:10,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:10,449 INFO L93 Difference]: Finished difference Result 540 states and 1504 transitions. [2022-12-14 04:46:10,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:46:10,449 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:10,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:10,450 INFO L225 Difference]: With dead ends: 540 [2022-12-14 04:46:10,451 INFO L226 Difference]: Without dead ends: 529 [2022-12-14 04:46:10,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:46:10,451 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 54 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:10,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 0 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 04:46:10,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-12-14 04:46:10,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2022-12-14 04:46:10,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 528 states have (on average 2.820075757575758) internal successors, (1489), 528 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:10,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 1489 transitions. [2022-12-14 04:46:10,457 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 1489 transitions. Word has length 36 [2022-12-14 04:46:10,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:10,458 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 1489 transitions. [2022-12-14 04:46:10,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:10,458 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 1489 transitions. [2022-12-14 04:46:10,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:10,458 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:10,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:10,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-12-14 04:46:10,459 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:10,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:10,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1525460055, now seen corresponding path program 45 times [2022-12-14 04:46:10,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:10,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19399903] [2022-12-14 04:46:10,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:10,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:11,307 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:11,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:11,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19399903] [2022-12-14 04:46:11,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19399903] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:11,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:11,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 04:46:11,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053210801] [2022-12-14 04:46:11,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:11,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 04:46:11,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:11,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 04:46:11,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:46:11,308 INFO L87 Difference]: Start difference. First operand 529 states and 1489 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:11,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:11,720 INFO L93 Difference]: Finished difference Result 538 states and 1498 transitions. [2022-12-14 04:46:11,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:46:11,720 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:11,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:11,721 INFO L225 Difference]: With dead ends: 538 [2022-12-14 04:46:11,721 INFO L226 Difference]: Without dead ends: 527 [2022-12-14 04:46:11,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:46:11,722 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 50 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:11,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 0 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:46:11,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2022-12-14 04:46:11,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2022-12-14 04:46:11,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 526 states have (on average 2.821292775665399) internal successors, (1484), 526 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:11,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 1484 transitions. [2022-12-14 04:46:11,729 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 1484 transitions. Word has length 36 [2022-12-14 04:46:11,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:11,729 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 1484 transitions. [2022-12-14 04:46:11,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:11,729 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 1484 transitions. [2022-12-14 04:46:11,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:11,730 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:11,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:11,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-12-14 04:46:11,730 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:11,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:11,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1883873641, now seen corresponding path program 46 times [2022-12-14 04:46:11,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:11,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741413121] [2022-12-14 04:46:11,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:11,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:12,497 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:12,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:12,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741413121] [2022-12-14 04:46:12,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741413121] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:12,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:12,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 04:46:12,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176676221] [2022-12-14 04:46:12,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:12,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 04:46:12,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:12,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 04:46:12,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:46:12,498 INFO L87 Difference]: Start difference. First operand 527 states and 1484 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:12,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:12,816 INFO L93 Difference]: Finished difference Result 554 states and 1519 transitions. [2022-12-14 04:46:12,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:46:12,816 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:12,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:12,817 INFO L225 Difference]: With dead ends: 554 [2022-12-14 04:46:12,817 INFO L226 Difference]: Without dead ends: 540 [2022-12-14 04:46:12,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:46:12,817 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 52 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:12,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 0 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:46:12,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-12-14 04:46:12,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 530. [2022-12-14 04:46:12,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 2.8128544423440456) internal successors, (1488), 529 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:12,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1488 transitions. [2022-12-14 04:46:12,825 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1488 transitions. Word has length 36 [2022-12-14 04:46:12,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:12,825 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 1488 transitions. [2022-12-14 04:46:12,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:12,825 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1488 transitions. [2022-12-14 04:46:12,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:12,826 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:12,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:12,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-12-14 04:46:12,826 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:12,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:12,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2024804743, now seen corresponding path program 47 times [2022-12-14 04:46:12,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:12,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921783835] [2022-12-14 04:46:12,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:12,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:13,817 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:13,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:13,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921783835] [2022-12-14 04:46:13,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921783835] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:13,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:13,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 04:46:13,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560017480] [2022-12-14 04:46:13,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:13,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 04:46:13,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:13,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 04:46:13,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:46:13,818 INFO L87 Difference]: Start difference. First operand 530 states and 1488 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:14,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:14,111 INFO L93 Difference]: Finished difference Result 541 states and 1500 transitions. [2022-12-14 04:46:14,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:46:14,112 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:14,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:14,113 INFO L225 Difference]: With dead ends: 541 [2022-12-14 04:46:14,113 INFO L226 Difference]: Without dead ends: 526 [2022-12-14 04:46:14,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:46:14,113 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:14,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 04:46:14,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2022-12-14 04:46:14,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 524. [2022-12-14 04:46:14,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 2.8164435946462714) internal successors, (1473), 523 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:14,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1473 transitions. [2022-12-14 04:46:14,120 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1473 transitions. Word has length 36 [2022-12-14 04:46:14,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:14,120 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 1473 transitions. [2022-12-14 04:46:14,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:14,120 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1473 transitions. [2022-12-14 04:46:14,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:14,121 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:14,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:14,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-12-14 04:46:14,121 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:14,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:14,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1617728263, now seen corresponding path program 48 times [2022-12-14 04:46:14,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:14,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96456298] [2022-12-14 04:46:14,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:14,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:15,068 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:15,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:15,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96456298] [2022-12-14 04:46:15,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96456298] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:15,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:15,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 04:46:15,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798921314] [2022-12-14 04:46:15,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:15,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 04:46:15,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:15,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 04:46:15,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:46:15,069 INFO L87 Difference]: Start difference. First operand 524 states and 1473 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:15,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:15,387 INFO L93 Difference]: Finished difference Result 549 states and 1518 transitions. [2022-12-14 04:46:15,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:46:15,388 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:15,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:15,389 INFO L225 Difference]: With dead ends: 549 [2022-12-14 04:46:15,389 INFO L226 Difference]: Without dead ends: 538 [2022-12-14 04:46:15,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:46:15,389 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 52 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:15,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 0 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 04:46:15,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-12-14 04:46:15,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 524. [2022-12-14 04:46:15,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 2.8126195028680687) internal successors, (1471), 523 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:15,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1471 transitions. [2022-12-14 04:46:15,396 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1471 transitions. Word has length 36 [2022-12-14 04:46:15,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:15,396 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 1471 transitions. [2022-12-14 04:46:15,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:15,396 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1471 transitions. [2022-12-14 04:46:15,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:15,397 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:15,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:15,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-12-14 04:46:15,397 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:15,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:15,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1103988951, now seen corresponding path program 49 times [2022-12-14 04:46:15,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:15,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776742931] [2022-12-14 04:46:15,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:15,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:16,345 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:16,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:16,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776742931] [2022-12-14 04:46:16,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776742931] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:16,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:16,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 04:46:16,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705382501] [2022-12-14 04:46:16,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:16,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 04:46:16,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:16,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 04:46:16,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:46:16,346 INFO L87 Difference]: Start difference. First operand 524 states and 1471 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:16,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:16,714 INFO L93 Difference]: Finished difference Result 547 states and 1512 transitions. [2022-12-14 04:46:16,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:46:16,714 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:16,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:16,715 INFO L225 Difference]: With dead ends: 547 [2022-12-14 04:46:16,715 INFO L226 Difference]: Without dead ends: 536 [2022-12-14 04:46:16,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:46:16,715 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:16,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:46:16,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-12-14 04:46:16,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 522. [2022-12-14 04:46:16,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 521 states have (on average 2.8099808061420344) internal successors, (1464), 521 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:16,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 1464 transitions. [2022-12-14 04:46:16,721 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 1464 transitions. Word has length 36 [2022-12-14 04:46:16,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:16,722 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 1464 transitions. [2022-12-14 04:46:16,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:16,722 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 1464 transitions. [2022-12-14 04:46:16,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:16,722 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:16,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:16,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-12-14 04:46:16,723 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:16,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:16,723 INFO L85 PathProgramCache]: Analyzing trace with hash -147187981, now seen corresponding path program 50 times [2022-12-14 04:46:16,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:16,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136676938] [2022-12-14 04:46:16,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:16,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:17,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:17,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:17,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136676938] [2022-12-14 04:46:17,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136676938] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:17,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:17,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 04:46:17,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872639561] [2022-12-14 04:46:17,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:17,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 04:46:17,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:17,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 04:46:17,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-14 04:46:17,695 INFO L87 Difference]: Start difference. First operand 522 states and 1464 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:18,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:18,205 INFO L93 Difference]: Finished difference Result 575 states and 1549 transitions. [2022-12-14 04:46:18,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:46:18,205 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:18,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:18,206 INFO L225 Difference]: With dead ends: 575 [2022-12-14 04:46:18,206 INFO L226 Difference]: Without dead ends: 562 [2022-12-14 04:46:18,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-12-14 04:46:18,206 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 81 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:18,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 0 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:46:18,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-12-14 04:46:18,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 510. [2022-12-14 04:46:18,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 2.8133595284872297) internal successors, (1432), 509 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:18,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 1432 transitions. [2022-12-14 04:46:18,212 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 1432 transitions. Word has length 36 [2022-12-14 04:46:18,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:18,212 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 1432 transitions. [2022-12-14 04:46:18,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:18,213 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 1432 transitions. [2022-12-14 04:46:18,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:18,213 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:18,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:18,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-12-14 04:46:18,213 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:18,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:18,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1392585607, now seen corresponding path program 51 times [2022-12-14 04:46:18,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:18,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940228991] [2022-12-14 04:46:18,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:18,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:18,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:18,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:18,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940228991] [2022-12-14 04:46:18,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940228991] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:18,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:18,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 04:46:18,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552513176] [2022-12-14 04:46:18,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:18,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 04:46:18,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:18,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 04:46:18,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:46:18,957 INFO L87 Difference]: Start difference. First operand 510 states and 1432 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:19,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:19,344 INFO L93 Difference]: Finished difference Result 591 states and 1574 transitions. [2022-12-14 04:46:19,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:46:19,345 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:19,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:19,345 INFO L225 Difference]: With dead ends: 591 [2022-12-14 04:46:19,346 INFO L226 Difference]: Without dead ends: 577 [2022-12-14 04:46:19,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:46:19,346 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 74 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:19,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 0 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:46:19,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-12-14 04:46:19,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 531. [2022-12-14 04:46:19,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 530 states have (on average 2.8) internal successors, (1484), 530 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:19,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 1484 transitions. [2022-12-14 04:46:19,352 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 1484 transitions. Word has length 36 [2022-12-14 04:46:19,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:19,352 INFO L495 AbstractCegarLoop]: Abstraction has 531 states and 1484 transitions. [2022-12-14 04:46:19,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:19,352 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 1484 transitions. [2022-12-14 04:46:19,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:19,353 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:19,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:19,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-12-14 04:46:19,353 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:19,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:19,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1251654505, now seen corresponding path program 52 times [2022-12-14 04:46:19,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:19,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445232168] [2022-12-14 04:46:19,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:19,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:20,254 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:20,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:20,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445232168] [2022-12-14 04:46:20,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445232168] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:20,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:20,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 04:46:20,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384419917] [2022-12-14 04:46:20,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:20,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 04:46:20,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:20,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 04:46:20,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:46:20,255 INFO L87 Difference]: Start difference. First operand 531 states and 1484 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:20,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:20,593 INFO L93 Difference]: Finished difference Result 577 states and 1554 transitions. [2022-12-14 04:46:20,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:46:20,594 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:20,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:20,595 INFO L225 Difference]: With dead ends: 577 [2022-12-14 04:46:20,595 INFO L226 Difference]: Without dead ends: 565 [2022-12-14 04:46:20,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:46:20,595 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 66 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:20,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 0 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:46:20,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-12-14 04:46:20,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 528. [2022-12-14 04:46:20,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 2.79696394686907) internal successors, (1474), 527 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:20,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1474 transitions. [2022-12-14 04:46:20,601 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1474 transitions. Word has length 36 [2022-12-14 04:46:20,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:20,601 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 1474 transitions. [2022-12-14 04:46:20,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:20,601 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1474 transitions. [2022-12-14 04:46:20,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:20,602 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:20,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:20,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-12-14 04:46:20,602 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:20,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:20,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1463752977, now seen corresponding path program 53 times [2022-12-14 04:46:20,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:20,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806676128] [2022-12-14 04:46:20,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:20,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:21,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:21,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:21,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806676128] [2022-12-14 04:46:21,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806676128] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:21,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:21,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 04:46:21,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152367633] [2022-12-14 04:46:21,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:21,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 04:46:21,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:21,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 04:46:21,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-14 04:46:21,766 INFO L87 Difference]: Start difference. First operand 528 states and 1474 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:22,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:22,409 INFO L93 Difference]: Finished difference Result 590 states and 1563 transitions. [2022-12-14 04:46:22,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:46:22,409 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:22,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:22,410 INFO L225 Difference]: With dead ends: 590 [2022-12-14 04:46:22,410 INFO L226 Difference]: Without dead ends: 573 [2022-12-14 04:46:22,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:46:22,410 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 81 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:22,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 0 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 04:46:22,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-12-14 04:46:22,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 492. [2022-12-14 04:46:22,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 2.796334012219959) internal successors, (1373), 491 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:22,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1373 transitions. [2022-12-14 04:46:22,416 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1373 transitions. Word has length 36 [2022-12-14 04:46:22,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:22,416 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 1373 transitions. [2022-12-14 04:46:22,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:22,417 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1373 transitions. [2022-12-14 04:46:22,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:22,417 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:22,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:22,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-12-14 04:46:22,417 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:22,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:22,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1998533257, now seen corresponding path program 54 times [2022-12-14 04:46:22,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:22,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516432656] [2022-12-14 04:46:22,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:22,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:23,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:23,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516432656] [2022-12-14 04:46:23,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516432656] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:23,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:23,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 04:46:23,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301332631] [2022-12-14 04:46:23,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:23,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 04:46:23,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:23,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 04:46:23,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-12-14 04:46:23,330 INFO L87 Difference]: Start difference. First operand 492 states and 1373 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:23,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:23,710 INFO L93 Difference]: Finished difference Result 602 states and 1590 transitions. [2022-12-14 04:46:23,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 04:46:23,711 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:23,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:23,712 INFO L225 Difference]: With dead ends: 602 [2022-12-14 04:46:23,712 INFO L226 Difference]: Without dead ends: 587 [2022-12-14 04:46:23,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2022-12-14 04:46:23,712 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 166 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:23,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 0 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:46:23,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2022-12-14 04:46:23,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 502. [2022-12-14 04:46:23,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 501 states have (on average 2.7784431137724552) internal successors, (1392), 501 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:23,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 1392 transitions. [2022-12-14 04:46:23,718 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 1392 transitions. Word has length 36 [2022-12-14 04:46:23,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:23,718 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 1392 transitions. [2022-12-14 04:46:23,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:23,718 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 1392 transitions. [2022-12-14 04:46:23,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:23,719 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:23,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:23,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-12-14 04:46:23,719 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:23,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:23,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1567151309, now seen corresponding path program 55 times [2022-12-14 04:46:23,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:23,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840514859] [2022-12-14 04:46:23,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:23,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:24,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:24,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:24,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840514859] [2022-12-14 04:46:24,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840514859] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:24,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:24,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 04:46:24,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155106635] [2022-12-14 04:46:24,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:24,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 04:46:24,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:24,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 04:46:24,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-14 04:46:24,595 INFO L87 Difference]: Start difference. First operand 502 states and 1392 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:24,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:24,991 INFO L93 Difference]: Finished difference Result 586 states and 1566 transitions. [2022-12-14 04:46:24,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 04:46:24,992 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:24,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:24,993 INFO L225 Difference]: With dead ends: 586 [2022-12-14 04:46:24,993 INFO L226 Difference]: Without dead ends: 573 [2022-12-14 04:46:24,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2022-12-14 04:46:24,993 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 138 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:24,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 0 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:46:24,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-12-14 04:46:24,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 498. [2022-12-14 04:46:24,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 2.7867203219315897) internal successors, (1385), 497 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:24,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1385 transitions. [2022-12-14 04:46:24,999 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1385 transitions. Word has length 36 [2022-12-14 04:46:24,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:24,999 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 1385 transitions. [2022-12-14 04:46:24,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:24,999 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1385 transitions. [2022-12-14 04:46:25,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:25,000 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:25,000 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:25,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-12-14 04:46:25,000 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:25,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:25,001 INFO L85 PathProgramCache]: Analyzing trace with hash 2105429293, now seen corresponding path program 56 times [2022-12-14 04:46:25,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:25,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886742809] [2022-12-14 04:46:25,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:25,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:26,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:26,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:26,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886742809] [2022-12-14 04:46:26,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886742809] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:26,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:26,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 04:46:26,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244045012] [2022-12-14 04:46:26,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:26,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 04:46:26,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:26,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 04:46:26,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-12-14 04:46:26,024 INFO L87 Difference]: Start difference. First operand 498 states and 1385 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:26,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:26,622 INFO L93 Difference]: Finished difference Result 571 states and 1510 transitions. [2022-12-14 04:46:26,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 04:46:26,623 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:26,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:26,623 INFO L225 Difference]: With dead ends: 571 [2022-12-14 04:46:26,624 INFO L226 Difference]: Without dead ends: 557 [2022-12-14 04:46:26,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-12-14 04:46:26,624 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 236 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:26,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 0 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:46:26,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-12-14 04:46:26,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 519. [2022-12-14 04:46:26,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 2.7741312741312742) internal successors, (1437), 518 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:26,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 1437 transitions. [2022-12-14 04:46:26,630 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 1437 transitions. Word has length 36 [2022-12-14 04:46:26,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:26,630 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 1437 transitions. [2022-12-14 04:46:26,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:26,630 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 1437 transitions. [2022-12-14 04:46:26,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:26,631 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:26,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:26,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-12-14 04:46:26,631 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:26,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:26,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1964498191, now seen corresponding path program 57 times [2022-12-14 04:46:26,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:26,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179976811] [2022-12-14 04:46:26,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:26,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:27,625 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:27,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:27,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179976811] [2022-12-14 04:46:27,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179976811] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:27,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:27,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 04:46:27,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100710850] [2022-12-14 04:46:27,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:27,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 04:46:27,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:27,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 04:46:27,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-14 04:46:27,627 INFO L87 Difference]: Start difference. First operand 519 states and 1437 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:28,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:28,119 INFO L93 Difference]: Finished difference Result 558 states and 1491 transitions. [2022-12-14 04:46:28,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 04:46:28,119 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:28,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:28,120 INFO L225 Difference]: With dead ends: 558 [2022-12-14 04:46:28,120 INFO L226 Difference]: Without dead ends: 546 [2022-12-14 04:46:28,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-12-14 04:46:28,120 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 185 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:28,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 0 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:46:28,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-12-14 04:46:28,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 516. [2022-12-14 04:46:28,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 2.770873786407767) internal successors, (1427), 515 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:28,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1427 transitions. [2022-12-14 04:46:28,128 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1427 transitions. Word has length 36 [2022-12-14 04:46:28,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:28,128 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 1427 transitions. [2022-12-14 04:46:28,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:28,128 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1427 transitions. [2022-12-14 04:46:28,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:28,129 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:28,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:28,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-12-14 04:46:28,129 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:28,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:28,129 INFO L85 PathProgramCache]: Analyzing trace with hash -614174723, now seen corresponding path program 58 times [2022-12-14 04:46:28,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:28,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771256944] [2022-12-14 04:46:28,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:28,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:29,214 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:29,214 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:29,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771256944] [2022-12-14 04:46:29,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771256944] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:29,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:29,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 04:46:29,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967327099] [2022-12-14 04:46:29,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:29,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 04:46:29,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:29,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 04:46:29,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-14 04:46:29,215 INFO L87 Difference]: Start difference. First operand 516 states and 1427 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:29,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:29,762 INFO L93 Difference]: Finished difference Result 571 states and 1500 transitions. [2022-12-14 04:46:29,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 04:46:29,763 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:29,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:29,763 INFO L225 Difference]: With dead ends: 571 [2022-12-14 04:46:29,763 INFO L226 Difference]: Without dead ends: 549 [2022-12-14 04:46:29,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2022-12-14 04:46:29,764 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 203 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:29,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 0 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:46:29,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-12-14 04:46:29,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 490. [2022-12-14 04:46:29,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 2.7975460122699385) internal successors, (1368), 489 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:29,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1368 transitions. [2022-12-14 04:46:29,770 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1368 transitions. Word has length 36 [2022-12-14 04:46:29,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:29,770 INFO L495 AbstractCegarLoop]: Abstraction has 490 states and 1368 transitions. [2022-12-14 04:46:29,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:29,770 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1368 transitions. [2022-12-14 04:46:29,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:29,770 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:29,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:29,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-12-14 04:46:29,771 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:29,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:29,771 INFO L85 PathProgramCache]: Analyzing trace with hash 431741477, now seen corresponding path program 1 times [2022-12-14 04:46:29,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:29,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848090351] [2022-12-14 04:46:29,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:29,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:29,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:29,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:29,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848090351] [2022-12-14 04:46:29,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848090351] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:29,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:29,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 04:46:29,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906490420] [2022-12-14 04:46:29,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:29,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 04:46:29,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:29,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 04:46:29,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-14 04:46:30,000 INFO L87 Difference]: Start difference. First operand 490 states and 1368 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:30,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:30,181 INFO L93 Difference]: Finished difference Result 578 states and 1512 transitions. [2022-12-14 04:46:30,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 04:46:30,181 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:30,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:30,182 INFO L225 Difference]: With dead ends: 578 [2022-12-14 04:46:30,182 INFO L226 Difference]: Without dead ends: 542 [2022-12-14 04:46:30,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-12-14 04:46:30,183 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 157 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:30,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 0 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:46:30,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-12-14 04:46:30,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 490. [2022-12-14 04:46:30,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 2.773006134969325) internal successors, (1356), 489 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:30,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1356 transitions. [2022-12-14 04:46:30,188 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1356 transitions. Word has length 36 [2022-12-14 04:46:30,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:30,189 INFO L495 AbstractCegarLoop]: Abstraction has 490 states and 1356 transitions. [2022-12-14 04:46:30,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:30,189 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1356 transitions. [2022-12-14 04:46:30,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:30,189 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:30,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:30,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-12-14 04:46:30,190 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:30,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:30,190 INFO L85 PathProgramCache]: Analyzing trace with hash -786919038, now seen corresponding path program 1 times [2022-12-14 04:46:30,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:30,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381643226] [2022-12-14 04:46:30,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:30,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:31,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:31,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381643226] [2022-12-14 04:46:31,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381643226] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:31,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:31,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 04:46:31,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573819192] [2022-12-14 04:46:31,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:31,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 04:46:31,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:31,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 04:46:31,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-12-14 04:46:31,412 INFO L87 Difference]: Start difference. First operand 490 states and 1356 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:32,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:32,654 INFO L93 Difference]: Finished difference Result 1021 states and 2699 transitions. [2022-12-14 04:46:32,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 04:46:32,655 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:32,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:32,657 INFO L225 Difference]: With dead ends: 1021 [2022-12-14 04:46:32,657 INFO L226 Difference]: Without dead ends: 1014 [2022-12-14 04:46:32,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2022-12-14 04:46:32,657 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 328 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:32,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 0 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 04:46:32,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2022-12-14 04:46:32,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 530. [2022-12-14 04:46:32,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 2.8109640831758034) internal successors, (1487), 529 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:32,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1487 transitions. [2022-12-14 04:46:32,666 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1487 transitions. Word has length 36 [2022-12-14 04:46:32,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:32,666 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 1487 transitions. [2022-12-14 04:46:32,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:32,666 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1487 transitions. [2022-12-14 04:46:32,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:32,667 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:32,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:32,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-12-14 04:46:32,667 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:32,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:32,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1469430898, now seen corresponding path program 2 times [2022-12-14 04:46:32,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:32,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554721961] [2022-12-14 04:46:32,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:32,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:33,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:33,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:33,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554721961] [2022-12-14 04:46:33,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554721961] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:33,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:33,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 04:46:33,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730237566] [2022-12-14 04:46:33,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:33,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 04:46:33,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:33,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 04:46:33,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:46:33,979 INFO L87 Difference]: Start difference. First operand 530 states and 1487 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:38,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:38,761 INFO L93 Difference]: Finished difference Result 1327 states and 3543 transitions. [2022-12-14 04:46:38,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-14 04:46:38,761 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:38,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:38,763 INFO L225 Difference]: With dead ends: 1327 [2022-12-14 04:46:38,763 INFO L226 Difference]: Without dead ends: 1320 [2022-12-14 04:46:38,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=581, Invalid=1399, Unknown=0, NotChecked=0, Total=1980 [2022-12-14 04:46:38,763 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 493 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:38,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 0 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 04:46:38,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2022-12-14 04:46:38,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 532. [2022-12-14 04:46:38,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 531 states have (on average 2.817325800376648) internal successors, (1496), 531 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:38,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 1496 transitions. [2022-12-14 04:46:38,773 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 1496 transitions. Word has length 36 [2022-12-14 04:46:38,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:38,773 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 1496 transitions. [2022-12-14 04:46:38,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:38,773 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 1496 transitions. [2022-12-14 04:46:38,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:38,774 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:38,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:38,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-12-14 04:46:38,774 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:38,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:38,774 INFO L85 PathProgramCache]: Analyzing trace with hash 676418338, now seen corresponding path program 3 times [2022-12-14 04:46:38,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:38,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943222724] [2022-12-14 04:46:38,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:38,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:40,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:40,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:40,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943222724] [2022-12-14 04:46:40,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943222724] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:40,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:40,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 04:46:40,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836062672] [2022-12-14 04:46:40,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:40,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 04:46:40,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:40,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 04:46:40,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:46:40,086 INFO L87 Difference]: Start difference. First operand 532 states and 1496 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:43,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:43,527 INFO L93 Difference]: Finished difference Result 1263 states and 3300 transitions. [2022-12-14 04:46:43,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 04:46:43,527 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:43,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:43,529 INFO L225 Difference]: With dead ends: 1263 [2022-12-14 04:46:43,529 INFO L226 Difference]: Without dead ends: 1256 [2022-12-14 04:46:43,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=370, Invalid=820, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 04:46:43,529 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 441 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:43,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 0 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 04:46:43,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2022-12-14 04:46:43,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 544. [2022-12-14 04:46:43,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 543 states have (on average 2.8139963167587476) internal successors, (1528), 543 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:43,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 1528 transitions. [2022-12-14 04:46:43,538 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 1528 transitions. Word has length 36 [2022-12-14 04:46:43,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:43,539 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 1528 transitions. [2022-12-14 04:46:43,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:43,539 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 1528 transitions. [2022-12-14 04:46:43,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:43,539 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:43,539 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:43,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-12-14 04:46:43,540 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:43,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:43,540 INFO L85 PathProgramCache]: Analyzing trace with hash -398971294, now seen corresponding path program 4 times [2022-12-14 04:46:43,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:43,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972135593] [2022-12-14 04:46:43,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:43,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:44,732 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:44,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:44,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972135593] [2022-12-14 04:46:44,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972135593] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:44,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:44,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 04:46:44,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345925057] [2022-12-14 04:46:44,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:44,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 04:46:44,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:44,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 04:46:44,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:46:44,733 INFO L87 Difference]: Start difference. First operand 544 states and 1528 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:47,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:47,367 INFO L93 Difference]: Finished difference Result 1255 states and 3282 transitions. [2022-12-14 04:46:47,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-14 04:46:47,367 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:47,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:47,369 INFO L225 Difference]: With dead ends: 1255 [2022-12-14 04:46:47,369 INFO L226 Difference]: Without dead ends: 1248 [2022-12-14 04:46:47,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=490, Invalid=1070, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 04:46:47,369 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 440 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:47,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 0 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 04:46:47,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2022-12-14 04:46:47,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 544. [2022-12-14 04:46:47,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 543 states have (on average 2.8139963167587476) internal successors, (1528), 543 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:47,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 1528 transitions. [2022-12-14 04:46:47,378 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 1528 transitions. Word has length 36 [2022-12-14 04:46:47,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:47,378 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 1528 transitions. [2022-12-14 04:46:47,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:47,379 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 1528 transitions. [2022-12-14 04:46:47,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:47,379 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:47,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:47,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-12-14 04:46:47,379 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:47,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:47,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1598926291, now seen corresponding path program 2 times [2022-12-14 04:46:47,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:47,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997009863] [2022-12-14 04:46:47,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:47,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:47,634 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:47,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:47,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997009863] [2022-12-14 04:46:47,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997009863] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:47,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:47,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 04:46:47,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196121166] [2022-12-14 04:46:47,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:47,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 04:46:47,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:47,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 04:46:47,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-14 04:46:47,635 INFO L87 Difference]: Start difference. First operand 544 states and 1528 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:47,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:47,886 INFO L93 Difference]: Finished difference Result 600 states and 1629 transitions. [2022-12-14 04:46:47,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 04:46:47,886 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:47,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:47,887 INFO L225 Difference]: With dead ends: 600 [2022-12-14 04:46:47,887 INFO L226 Difference]: Without dead ends: 600 [2022-12-14 04:46:47,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-12-14 04:46:47,888 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 151 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:47,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 0 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 04:46:47,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2022-12-14 04:46:47,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 544. [2022-12-14 04:46:47,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 543 states have (on average 2.7882136279926337) internal successors, (1514), 543 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:47,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 1514 transitions. [2022-12-14 04:46:47,894 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 1514 transitions. Word has length 36 [2022-12-14 04:46:47,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:47,894 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 1514 transitions. [2022-12-14 04:46:47,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:47,894 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 1514 transitions. [2022-12-14 04:46:47,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:47,895 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:47,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:47,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-12-14 04:46:47,895 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:47,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:47,895 INFO L85 PathProgramCache]: Analyzing trace with hash 379552518, now seen corresponding path program 5 times [2022-12-14 04:46:47,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:47,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648663671] [2022-12-14 04:46:47,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:47,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:49,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:49,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:49,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648663671] [2022-12-14 04:46:49,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648663671] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:49,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:49,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 04:46:49,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438628885] [2022-12-14 04:46:49,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:49,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 04:46:49,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:49,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 04:46:49,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:46:49,272 INFO L87 Difference]: Start difference. First operand 544 states and 1514 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:53,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:53,021 INFO L93 Difference]: Finished difference Result 1205 states and 3128 transitions. [2022-12-14 04:46:53,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 04:46:53,022 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:53,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:53,023 INFO L225 Difference]: With dead ends: 1205 [2022-12-14 04:46:53,023 INFO L226 Difference]: Without dead ends: 1198 [2022-12-14 04:46:53,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 04:46:53,024 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 430 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:53,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 0 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 04:46:53,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2022-12-14 04:46:53,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 548. [2022-12-14 04:46:53,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 547 states have (on average 2.7806215722120657) internal successors, (1521), 547 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:53,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 1521 transitions. [2022-12-14 04:46:53,036 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 1521 transitions. Word has length 36 [2022-12-14 04:46:53,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:53,036 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 1521 transitions. [2022-12-14 04:46:53,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:53,036 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 1521 transitions. [2022-12-14 04:46:53,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:53,036 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:53,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:53,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-12-14 04:46:53,037 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:53,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:53,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1553018618, now seen corresponding path program 6 times [2022-12-14 04:46:53,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:53,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210777730] [2022-12-14 04:46:53,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:53,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:54,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:54,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:54,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210777730] [2022-12-14 04:46:54,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210777730] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:54,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:54,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 04:46:54,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885615322] [2022-12-14 04:46:54,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:54,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 04:46:54,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:54,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 04:46:54,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:46:54,285 INFO L87 Difference]: Start difference. First operand 548 states and 1521 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:57,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:46:57,292 INFO L93 Difference]: Finished difference Result 1281 states and 3290 transitions. [2022-12-14 04:46:57,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 04:46:57,292 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 36 [2022-12-14 04:46:57,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:46:57,294 INFO L225 Difference]: With dead ends: 1281 [2022-12-14 04:46:57,294 INFO L226 Difference]: Without dead ends: 1274 [2022-12-14 04:46:57,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 04:46:57,294 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 383 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:46:57,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 0 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 04:46:57,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2022-12-14 04:46:57,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 548. [2022-12-14 04:46:57,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 547 states have (on average 2.7806215722120657) internal successors, (1521), 547 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:57,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 1521 transitions. [2022-12-14 04:46:57,303 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 1521 transitions. Word has length 36 [2022-12-14 04:46:57,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:46:57,303 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 1521 transitions. [2022-12-14 04:46:57,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:46:57,304 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 1521 transitions. [2022-12-14 04:46:57,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:46:57,304 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:46:57,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:46:57,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-12-14 04:46:57,304 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:46:57,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:46:57,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1110173242, now seen corresponding path program 7 times [2022-12-14 04:46:57,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:46:57,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117154276] [2022-12-14 04:46:57,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:46:57,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:46:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:46:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:46:58,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:46:58,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117154276] [2022-12-14 04:46:58,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117154276] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:46:58,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:46:58,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 04:46:58,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154912856] [2022-12-14 04:46:58,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:46:58,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 04:46:58,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:46:58,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 04:46:58,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:46:58,598 INFO L87 Difference]: Start difference. First operand 548 states and 1521 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:03,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:03,310 INFO L93 Difference]: Finished difference Result 1421 states and 3712 transitions. [2022-12-14 04:47:03,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-14 04:47:03,310 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 36 [2022-12-14 04:47:03,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:03,312 INFO L225 Difference]: With dead ends: 1421 [2022-12-14 04:47:03,312 INFO L226 Difference]: Without dead ends: 1414 [2022-12-14 04:47:03,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=574, Invalid=1406, Unknown=0, NotChecked=0, Total=1980 [2022-12-14 04:47:03,312 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 490 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:03,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 0 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 04:47:03,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2022-12-14 04:47:03,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 542. [2022-12-14 04:47:03,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 2.7689463955637708) internal successors, (1498), 541 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:03,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1498 transitions. [2022-12-14 04:47:03,322 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1498 transitions. Word has length 36 [2022-12-14 04:47:03,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:03,322 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 1498 transitions. [2022-12-14 04:47:03,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:03,322 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1498 transitions. [2022-12-14 04:47:03,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:47:03,323 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:03,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:03,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-12-14 04:47:03,323 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:47:03,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:03,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1272212760, now seen corresponding path program 8 times [2022-12-14 04:47:03,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:03,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941693658] [2022-12-14 04:47:03,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:03,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:04,638 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:47:04,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:04,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941693658] [2022-12-14 04:47:04,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941693658] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:04,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:47:04,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 04:47:04,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530977145] [2022-12-14 04:47:04,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:04,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 04:47:04,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:04,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 04:47:04,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:47:04,639 INFO L87 Difference]: Start difference. First operand 542 states and 1498 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:07,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:07,196 INFO L93 Difference]: Finished difference Result 1358 states and 3564 transitions. [2022-12-14 04:47:07,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 04:47:07,197 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 36 [2022-12-14 04:47:07,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:07,198 INFO L225 Difference]: With dead ends: 1358 [2022-12-14 04:47:07,198 INFO L226 Difference]: Without dead ends: 1351 [2022-12-14 04:47:07,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=319, Invalid=673, Unknown=0, NotChecked=0, Total=992 [2022-12-14 04:47:07,198 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 410 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:07,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 0 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 04:47:07,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2022-12-14 04:47:07,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 572. [2022-12-14 04:47:07,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 2.8248686514886163) internal successors, (1613), 571 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:07,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 1613 transitions. [2022-12-14 04:47:07,208 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 1613 transitions. Word has length 36 [2022-12-14 04:47:07,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:07,208 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 1613 transitions. [2022-12-14 04:47:07,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:07,208 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 1613 transitions. [2022-12-14 04:47:07,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:47:07,209 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:07,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:07,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-12-14 04:47:07,209 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:47:07,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:07,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1954724620, now seen corresponding path program 9 times [2022-12-14 04:47:07,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:07,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804277357] [2022-12-14 04:47:07,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:07,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:08,436 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:47:08,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:08,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804277357] [2022-12-14 04:47:08,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804277357] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:08,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:47:08,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 04:47:08,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052622341] [2022-12-14 04:47:08,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:08,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 04:47:08,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:08,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 04:47:08,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:47:08,437 INFO L87 Difference]: Start difference. First operand 572 states and 1613 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:12,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:12,493 INFO L93 Difference]: Finished difference Result 1609 states and 4266 transitions. [2022-12-14 04:47:12,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-14 04:47:12,494 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 36 [2022-12-14 04:47:12,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:12,496 INFO L225 Difference]: With dead ends: 1609 [2022-12-14 04:47:12,496 INFO L226 Difference]: Without dead ends: 1602 [2022-12-14 04:47:12,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=584, Invalid=1396, Unknown=0, NotChecked=0, Total=1980 [2022-12-14 04:47:12,496 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 435 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:12,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 0 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 04:47:12,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2022-12-14 04:47:12,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 589. [2022-12-14 04:47:12,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 588 states have (on average 2.8622448979591835) internal successors, (1683), 588 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:12,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 1683 transitions. [2022-12-14 04:47:12,507 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 1683 transitions. Word has length 36 [2022-12-14 04:47:12,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:12,508 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 1683 transitions. [2022-12-14 04:47:12,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:12,508 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 1683 transitions. [2022-12-14 04:47:12,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:47:12,508 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:12,509 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:12,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-12-14 04:47:12,509 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:47:12,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:12,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1530723764, now seen corresponding path program 10 times [2022-12-14 04:47:12,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:12,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348897499] [2022-12-14 04:47:12,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:12,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:13,816 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:47:13,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:13,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348897499] [2022-12-14 04:47:13,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348897499] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:13,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:47:13,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 04:47:13,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886806434] [2022-12-14 04:47:13,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:13,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 04:47:13,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:13,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 04:47:13,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:47:13,817 INFO L87 Difference]: Start difference. First operand 589 states and 1683 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:17,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:17,643 INFO L93 Difference]: Finished difference Result 1599 states and 4245 transitions. [2022-12-14 04:47:17,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-14 04:47:17,643 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 36 [2022-12-14 04:47:17,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:17,645 INFO L225 Difference]: With dead ends: 1599 [2022-12-14 04:47:17,645 INFO L226 Difference]: Without dead ends: 1592 [2022-12-14 04:47:17,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=611, Invalid=1459, Unknown=0, NotChecked=0, Total=2070 [2022-12-14 04:47:17,646 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 396 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:17,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 0 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 04:47:17,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2022-12-14 04:47:17,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 577. [2022-12-14 04:47:17,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 576 states have (on average 2.845486111111111) internal successors, (1639), 576 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:17,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 1639 transitions. [2022-12-14 04:47:17,656 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 1639 transitions. Word has length 36 [2022-12-14 04:47:17,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:17,656 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 1639 transitions. [2022-12-14 04:47:17,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:17,657 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 1639 transitions. [2022-12-14 04:47:17,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:47:17,657 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:17,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:17,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-12-14 04:47:17,658 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:47:17,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:17,658 INFO L85 PathProgramCache]: Analyzing trace with hash 191124616, now seen corresponding path program 11 times [2022-12-14 04:47:17,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:17,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258185795] [2022-12-14 04:47:17,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:17,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:18,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:47:18,712 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:18,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258185795] [2022-12-14 04:47:18,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258185795] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:18,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:47:18,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 04:47:18,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347484891] [2022-12-14 04:47:18,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:18,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 04:47:18,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:18,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 04:47:18,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:47:18,713 INFO L87 Difference]: Start difference. First operand 577 states and 1639 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:20,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:20,868 INFO L93 Difference]: Finished difference Result 1459 states and 3839 transitions. [2022-12-14 04:47:20,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 04:47:20,869 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 36 [2022-12-14 04:47:20,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:20,871 INFO L225 Difference]: With dead ends: 1459 [2022-12-14 04:47:20,871 INFO L226 Difference]: Without dead ends: 1452 [2022-12-14 04:47:20,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=371, Invalid=819, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 04:47:20,871 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 426 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:20,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 0 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 04:47:20,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2022-12-14 04:47:20,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 581. [2022-12-14 04:47:20,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 580 states have (on average 2.85) internal successors, (1653), 580 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:20,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 1653 transitions. [2022-12-14 04:47:20,890 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 1653 transitions. Word has length 36 [2022-12-14 04:47:20,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:20,890 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 1653 transitions. [2022-12-14 04:47:20,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:20,891 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 1653 transitions. [2022-12-14 04:47:20,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:47:20,892 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:20,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:20,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-12-14 04:47:20,892 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:47:20,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:20,892 INFO L85 PathProgramCache]: Analyzing trace with hash -884265016, now seen corresponding path program 12 times [2022-12-14 04:47:20,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:20,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354596948] [2022-12-14 04:47:20,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:20,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:21,969 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:47:21,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:21,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354596948] [2022-12-14 04:47:21,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354596948] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:21,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:47:21,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 04:47:21,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241625125] [2022-12-14 04:47:21,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:21,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 04:47:21,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:21,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 04:47:21,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-14 04:47:21,970 INFO L87 Difference]: Start difference. First operand 581 states and 1653 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:22,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:22,922 INFO L93 Difference]: Finished difference Result 1208 states and 3229 transitions. [2022-12-14 04:47:22,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 04:47:22,923 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 36 [2022-12-14 04:47:22,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:22,924 INFO L225 Difference]: With dead ends: 1208 [2022-12-14 04:47:22,924 INFO L226 Difference]: Without dead ends: 1201 [2022-12-14 04:47:22,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2022-12-14 04:47:22,925 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 331 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:22,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 0 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 04:47:22,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2022-12-14 04:47:22,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 583. [2022-12-14 04:47:22,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 582 states have (on average 2.8556701030927836) internal successors, (1662), 582 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:22,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1662 transitions. [2022-12-14 04:47:22,934 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1662 transitions. Word has length 36 [2022-12-14 04:47:22,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:22,934 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 1662 transitions. [2022-12-14 04:47:22,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:22,934 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1662 transitions. [2022-12-14 04:47:22,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:47:22,935 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:22,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:22,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-12-14 04:47:22,935 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:47:22,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:22,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1693783928, now seen corresponding path program 13 times [2022-12-14 04:47:22,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:22,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850690693] [2022-12-14 04:47:22,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:22,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:24,088 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:47:24,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:24,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850690693] [2022-12-14 04:47:24,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850690693] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:24,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:47:24,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 04:47:24,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287627687] [2022-12-14 04:47:24,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:24,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 04:47:24,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:24,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 04:47:24,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:47:24,090 INFO L87 Difference]: Start difference. First operand 583 states and 1662 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:25,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:25,899 INFO L93 Difference]: Finished difference Result 1480 states and 3882 transitions. [2022-12-14 04:47:25,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 04:47:25,899 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 36 [2022-12-14 04:47:25,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:25,901 INFO L225 Difference]: With dead ends: 1480 [2022-12-14 04:47:25,901 INFO L226 Difference]: Without dead ends: 1473 [2022-12-14 04:47:25,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=432, Invalid=900, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 04:47:25,901 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 376 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:25,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 0 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 04:47:25,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2022-12-14 04:47:25,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 569. [2022-12-14 04:47:25,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 2.8433098591549295) internal successors, (1615), 568 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:25,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1615 transitions. [2022-12-14 04:47:25,917 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1615 transitions. Word has length 36 [2022-12-14 04:47:25,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:25,917 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 1615 transitions. [2022-12-14 04:47:25,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:25,918 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1615 transitions. [2022-12-14 04:47:25,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:47:25,918 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:25,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:25,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-12-14 04:47:25,918 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:47:25,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:25,919 INFO L85 PathProgramCache]: Analyzing trace with hash -184600570, now seen corresponding path program 14 times [2022-12-14 04:47:25,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:25,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063457118] [2022-12-14 04:47:25,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:25,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:25,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:27,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:47:27,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:27,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063457118] [2022-12-14 04:47:27,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063457118] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:27,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:47:27,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 04:47:27,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649462885] [2022-12-14 04:47:27,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:27,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 04:47:27,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:27,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 04:47:27,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:47:27,242 INFO L87 Difference]: Start difference. First operand 569 states and 1615 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:29,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:29,367 INFO L93 Difference]: Finished difference Result 1186 states and 3148 transitions. [2022-12-14 04:47:29,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 04:47:29,367 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 36 [2022-12-14 04:47:29,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:29,369 INFO L225 Difference]: With dead ends: 1186 [2022-12-14 04:47:29,369 INFO L226 Difference]: Without dead ends: 1179 [2022-12-14 04:47:29,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=280, Invalid=590, Unknown=0, NotChecked=0, Total=870 [2022-12-14 04:47:29,369 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 355 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:29,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 0 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 04:47:29,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-12-14 04:47:29,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 578. [2022-12-14 04:47:29,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 577 states have (on average 2.8457538994800693) internal successors, (1642), 577 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:29,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1642 transitions. [2022-12-14 04:47:29,379 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1642 transitions. Word has length 36 [2022-12-14 04:47:29,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:29,379 INFO L495 AbstractCegarLoop]: Abstraction has 578 states and 1642 transitions. [2022-12-14 04:47:29,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:29,379 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1642 transitions. [2022-12-14 04:47:29,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:47:29,380 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:29,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:29,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-12-14 04:47:29,380 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:47:29,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:29,380 INFO L85 PathProgramCache]: Analyzing trace with hash -632111442, now seen corresponding path program 15 times [2022-12-14 04:47:29,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:29,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254440076] [2022-12-14 04:47:29,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:29,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:30,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:47:30,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:30,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254440076] [2022-12-14 04:47:30,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254440076] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:30,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:47:30,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 04:47:30,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967160986] [2022-12-14 04:47:30,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:30,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 04:47:30,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:30,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 04:47:30,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-12-14 04:47:30,381 INFO L87 Difference]: Start difference. First operand 578 states and 1642 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:31,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:31,322 INFO L93 Difference]: Finished difference Result 1104 states and 2974 transitions. [2022-12-14 04:47:31,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 04:47:31,322 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 36 [2022-12-14 04:47:31,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:31,323 INFO L225 Difference]: With dead ends: 1104 [2022-12-14 04:47:31,323 INFO L226 Difference]: Without dead ends: 1090 [2022-12-14 04:47:31,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2022-12-14 04:47:31,324 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 246 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:31,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 0 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 04:47:31,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-12-14 04:47:31,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 575. [2022-12-14 04:47:31,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 2.843205574912892) internal successors, (1632), 574 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:31,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1632 transitions. [2022-12-14 04:47:31,333 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1632 transitions. Word has length 36 [2022-12-14 04:47:31,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:31,333 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 1632 transitions. [2022-12-14 04:47:31,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:31,333 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1632 transitions. [2022-12-14 04:47:31,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:47:31,334 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:31,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:31,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-12-14 04:47:31,334 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:47:31,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:31,334 INFO L85 PathProgramCache]: Analyzing trace with hash -315142622, now seen corresponding path program 16 times [2022-12-14 04:47:31,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:31,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436116752] [2022-12-14 04:47:31,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:31,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:32,273 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:47:32,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:32,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436116752] [2022-12-14 04:47:32,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436116752] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:32,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:47:32,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 04:47:32,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860650693] [2022-12-14 04:47:32,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:32,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 04:47:32,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:32,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 04:47:32,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-14 04:47:32,274 INFO L87 Difference]: Start difference. First operand 575 states and 1632 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:33,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:33,206 INFO L93 Difference]: Finished difference Result 1153 states and 3083 transitions. [2022-12-14 04:47:33,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 04:47:33,206 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 36 [2022-12-14 04:47:33,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:33,208 INFO L225 Difference]: With dead ends: 1153 [2022-12-14 04:47:33,208 INFO L226 Difference]: Without dead ends: 1139 [2022-12-14 04:47:33,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2022-12-14 04:47:33,208 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 319 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:33,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 0 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 04:47:33,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-12-14 04:47:33,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 590. [2022-12-14 04:47:33,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 589 states have (on average 2.8370118845500847) internal successors, (1671), 589 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:33,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 1671 transitions. [2022-12-14 04:47:33,218 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 1671 transitions. Word has length 36 [2022-12-14 04:47:33,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:33,218 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 1671 transitions. [2022-12-14 04:47:33,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:33,218 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 1671 transitions. [2022-12-14 04:47:33,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:47:33,218 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:33,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:33,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-12-14 04:47:33,219 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:47:33,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:33,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1393092102, now seen corresponding path program 17 times [2022-12-14 04:47:33,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:33,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851832937] [2022-12-14 04:47:33,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:33,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:34,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:47:34,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:34,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851832937] [2022-12-14 04:47:34,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851832937] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:34,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:47:34,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 04:47:34,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502497255] [2022-12-14 04:47:34,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:34,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 04:47:34,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:34,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 04:47:34,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-12-14 04:47:34,241 INFO L87 Difference]: Start difference. First operand 590 states and 1671 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:35,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:35,176 INFO L93 Difference]: Finished difference Result 1165 states and 3104 transitions. [2022-12-14 04:47:35,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 04:47:35,176 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 36 [2022-12-14 04:47:35,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:35,178 INFO L225 Difference]: With dead ends: 1165 [2022-12-14 04:47:35,178 INFO L226 Difference]: Without dead ends: 1158 [2022-12-14 04:47:35,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2022-12-14 04:47:35,178 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 273 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:35,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 0 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 04:47:35,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2022-12-14 04:47:35,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 585. [2022-12-14 04:47:35,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 584 states have (on average 2.839041095890411) internal successors, (1658), 584 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:35,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1658 transitions. [2022-12-14 04:47:35,188 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1658 transitions. Word has length 36 [2022-12-14 04:47:35,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:35,188 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 1658 transitions. [2022-12-14 04:47:35,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:35,188 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1658 transitions. [2022-12-14 04:47:35,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:47:35,189 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:35,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:35,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-12-14 04:47:35,189 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:47:35,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:35,189 INFO L85 PathProgramCache]: Analyzing trace with hash -2080410194, now seen corresponding path program 18 times [2022-12-14 04:47:35,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:35,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092236864] [2022-12-14 04:47:35,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:35,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:36,395 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:47:36,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:36,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092236864] [2022-12-14 04:47:36,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092236864] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:36,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:47:36,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 04:47:36,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14870745] [2022-12-14 04:47:36,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:36,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 04:47:36,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:36,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 04:47:36,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-12-14 04:47:36,396 INFO L87 Difference]: Start difference. First operand 585 states and 1658 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:37,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:37,037 INFO L93 Difference]: Finished difference Result 1018 states and 2717 transitions. [2022-12-14 04:47:37,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 04:47:37,038 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 36 [2022-12-14 04:47:37,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:37,039 INFO L225 Difference]: With dead ends: 1018 [2022-12-14 04:47:37,039 INFO L226 Difference]: Without dead ends: 1011 [2022-12-14 04:47:37,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2022-12-14 04:47:37,039 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 310 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:37,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 0 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 04:47:37,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2022-12-14 04:47:37,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 591. [2022-12-14 04:47:37,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 590 states have (on average 2.835593220338983) internal successors, (1673), 590 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:37,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1673 transitions. [2022-12-14 04:47:37,049 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1673 transitions. Word has length 36 [2022-12-14 04:47:37,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:37,049 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 1673 transitions. [2022-12-14 04:47:37,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:37,049 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1673 transitions. [2022-12-14 04:47:37,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:47:37,050 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:37,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:37,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-12-14 04:47:37,050 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:47:37,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:37,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1626579448, now seen corresponding path program 19 times [2022-12-14 04:47:37,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:37,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282527998] [2022-12-14 04:47:37,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:37,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:38,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:47:38,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:38,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282527998] [2022-12-14 04:47:38,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282527998] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:38,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:47:38,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 04:47:38,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153791981] [2022-12-14 04:47:38,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:38,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 04:47:38,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:38,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 04:47:38,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-14 04:47:38,130 INFO L87 Difference]: Start difference. First operand 591 states and 1673 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:39,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:39,009 INFO L93 Difference]: Finished difference Result 1046 states and 2789 transitions. [2022-12-14 04:47:39,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 04:47:39,010 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 36 [2022-12-14 04:47:39,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:39,011 INFO L225 Difference]: With dead ends: 1046 [2022-12-14 04:47:39,011 INFO L226 Difference]: Without dead ends: 1039 [2022-12-14 04:47:39,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2022-12-14 04:47:39,012 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 299 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:39,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 0 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 04:47:39,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2022-12-14 04:47:39,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 606. [2022-12-14 04:47:39,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 605 states have (on average 2.83801652892562) internal successors, (1717), 605 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:39,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 1717 transitions. [2022-12-14 04:47:39,021 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 1717 transitions. Word has length 36 [2022-12-14 04:47:39,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:39,021 INFO L495 AbstractCegarLoop]: Abstraction has 606 states and 1717 transitions. [2022-12-14 04:47:39,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:39,021 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 1717 transitions. [2022-12-14 04:47:39,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:47:39,022 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:39,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:39,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-12-14 04:47:39,022 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:47:39,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:39,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1168768426, now seen corresponding path program 20 times [2022-12-14 04:47:39,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:39,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533560893] [2022-12-14 04:47:39,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:39,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:40,122 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:47:40,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:40,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533560893] [2022-12-14 04:47:40,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533560893] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:40,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:47:40,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 04:47:40,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601337208] [2022-12-14 04:47:40,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:40,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 04:47:40,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:40,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 04:47:40,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:47:40,124 INFO L87 Difference]: Start difference. First operand 606 states and 1717 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:41,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:41,536 INFO L93 Difference]: Finished difference Result 1199 states and 3257 transitions. [2022-12-14 04:47:41,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 04:47:41,536 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 36 [2022-12-14 04:47:41,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:41,538 INFO L225 Difference]: With dead ends: 1199 [2022-12-14 04:47:41,538 INFO L226 Difference]: Without dead ends: 1185 [2022-12-14 04:47:41,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=181, Invalid=419, Unknown=0, NotChecked=0, Total=600 [2022-12-14 04:47:41,538 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 305 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:41,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 0 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 04:47:41,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2022-12-14 04:47:41,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 614. [2022-12-14 04:47:41,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 2.843393148450245) internal successors, (1743), 613 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:41,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1743 transitions. [2022-12-14 04:47:41,548 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1743 transitions. Word has length 36 [2022-12-14 04:47:41,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:41,548 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 1743 transitions. [2022-12-14 04:47:41,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:41,549 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1743 transitions. [2022-12-14 04:47:41,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:47:41,549 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:41,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:41,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-12-14 04:47:41,550 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:47:41,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:41,550 INFO L85 PathProgramCache]: Analyzing trace with hash -447613856, now seen corresponding path program 21 times [2022-12-14 04:47:41,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:41,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093699262] [2022-12-14 04:47:41,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:41,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:42,874 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:47:42,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:42,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093699262] [2022-12-14 04:47:42,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093699262] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:42,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:47:42,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 04:47:42,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775333877] [2022-12-14 04:47:42,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:42,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 04:47:42,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:42,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 04:47:42,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:47:42,875 INFO L87 Difference]: Start difference. First operand 614 states and 1743 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:46,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:46,375 INFO L93 Difference]: Finished difference Result 1011 states and 2648 transitions. [2022-12-14 04:47:46,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 04:47:46,375 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 36 [2022-12-14 04:47:46,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:46,377 INFO L225 Difference]: With dead ends: 1011 [2022-12-14 04:47:46,377 INFO L226 Difference]: Without dead ends: 1004 [2022-12-14 04:47:46,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=345, Invalid=777, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 04:47:46,377 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 371 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:46,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 0 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 04:47:46,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2022-12-14 04:47:46,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 634. [2022-12-14 04:47:46,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 633 states have (on average 2.8483412322274884) internal successors, (1803), 633 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:46,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 1803 transitions. [2022-12-14 04:47:46,386 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 1803 transitions. Word has length 36 [2022-12-14 04:47:46,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:46,386 INFO L495 AbstractCegarLoop]: Abstraction has 634 states and 1803 transitions. [2022-12-14 04:47:46,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:46,386 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 1803 transitions. [2022-12-14 04:47:46,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:47:46,387 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:46,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:46,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-12-14 04:47:46,387 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:47:46,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:46,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1130125716, now seen corresponding path program 22 times [2022-12-14 04:47:46,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:46,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726440] [2022-12-14 04:47:46,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:46,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:47,782 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:47:47,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:47,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726440] [2022-12-14 04:47:47,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726440] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:47,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:47:47,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 04:47:47,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048571492] [2022-12-14 04:47:47,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:47,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 04:47:47,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:47,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 04:47:47,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:47:47,783 INFO L87 Difference]: Start difference. First operand 634 states and 1803 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:52,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:52,326 INFO L93 Difference]: Finished difference Result 1103 states and 2911 transitions. [2022-12-14 04:47:52,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-14 04:47:52,327 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 36 [2022-12-14 04:47:52,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:52,328 INFO L225 Difference]: With dead ends: 1103 [2022-12-14 04:47:52,328 INFO L226 Difference]: Without dead ends: 1096 [2022-12-14 04:47:52,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=472, Invalid=1168, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 04:47:52,329 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 384 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:52,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 0 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 04:47:52,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2022-12-14 04:47:52,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 636. [2022-12-14 04:47:52,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 635 states have (on average 2.853543307086614) internal successors, (1812), 635 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:52,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1812 transitions. [2022-12-14 04:47:52,338 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1812 transitions. Word has length 36 [2022-12-14 04:47:52,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:52,338 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 1812 transitions. [2022-12-14 04:47:52,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:52,338 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1812 transitions. [2022-12-14 04:47:52,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:47:52,339 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:52,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:52,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-12-14 04:47:52,339 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:47:52,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:52,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1939644628, now seen corresponding path program 23 times [2022-12-14 04:47:52,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:52,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872967133] [2022-12-14 04:47:52,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:52,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:53,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:47:53,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:53,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872967133] [2022-12-14 04:47:53,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872967133] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:53,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:47:53,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 04:47:53,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573331860] [2022-12-14 04:47:53,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:53,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 04:47:53,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:53,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 04:47:53,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-12-14 04:47:53,450 INFO L87 Difference]: Start difference. First operand 636 states and 1812 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:54,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:54,302 INFO L93 Difference]: Finished difference Result 871 states and 2299 transitions. [2022-12-14 04:47:54,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 04:47:54,303 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 36 [2022-12-14 04:47:54,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:54,304 INFO L225 Difference]: With dead ends: 871 [2022-12-14 04:47:54,304 INFO L226 Difference]: Without dead ends: 864 [2022-12-14 04:47:54,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2022-12-14 04:47:54,305 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 279 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:54,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 0 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 04:47:54,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2022-12-14 04:47:54,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 640. [2022-12-14 04:47:54,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 639 states have (on average 2.8544600938967135) internal successors, (1824), 639 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:54,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1824 transitions. [2022-12-14 04:47:54,312 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1824 transitions. Word has length 36 [2022-12-14 04:47:54,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:54,312 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 1824 transitions. [2022-12-14 04:47:54,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:54,313 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1824 transitions. [2022-12-14 04:47:54,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:47:54,313 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:54,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:54,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-12-14 04:47:54,313 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:47:54,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:54,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1015723520, now seen corresponding path program 24 times [2022-12-14 04:47:54,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:54,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893245101] [2022-12-14 04:47:54,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:54,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:55,572 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:47:55,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:55,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893245101] [2022-12-14 04:47:55,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893245101] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:55,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:47:55,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 04:47:55,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250895653] [2022-12-14 04:47:55,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:55,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 04:47:55,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:55,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 04:47:55,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:47:55,573 INFO L87 Difference]: Start difference. First operand 640 states and 1824 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:58,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:58,502 INFO L93 Difference]: Finished difference Result 1025 states and 2679 transitions. [2022-12-14 04:47:58,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 04:47:58,503 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 36 [2022-12-14 04:47:58,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:58,504 INFO L225 Difference]: With dead ends: 1025 [2022-12-14 04:47:58,504 INFO L226 Difference]: Without dead ends: 1018 [2022-12-14 04:47:58,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=346, Invalid=776, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 04:47:58,504 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 348 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:58,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 0 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 04:47:58,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2022-12-14 04:47:58,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 644. [2022-12-14 04:47:58,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 643 states have (on average 2.858475894245723) internal successors, (1838), 643 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:58,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1838 transitions. [2022-12-14 04:47:58,513 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1838 transitions. Word has length 36 [2022-12-14 04:47:58,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:58,513 INFO L495 AbstractCegarLoop]: Abstraction has 644 states and 1838 transitions. [2022-12-14 04:47:58,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:58,513 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1838 transitions. [2022-12-14 04:47:58,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:47:58,514 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:58,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:58,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-12-14 04:47:58,514 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:47:58,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:58,514 INFO L85 PathProgramCache]: Analyzing trace with hash -59666112, now seen corresponding path program 25 times [2022-12-14 04:47:58,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:58,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067542073] [2022-12-14 04:47:58,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:58,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:59,681 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:47:59,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:59,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067542073] [2022-12-14 04:47:59,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067542073] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:59,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:47:59,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 04:47:59,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931285651] [2022-12-14 04:47:59,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:59,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 04:47:59,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:59,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 04:47:59,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-12-14 04:47:59,682 INFO L87 Difference]: Start difference. First operand 644 states and 1838 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:00,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:48:00,872 INFO L93 Difference]: Finished difference Result 897 states and 2354 transitions. [2022-12-14 04:48:00,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 04:48:00,872 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 36 [2022-12-14 04:48:00,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:48:00,873 INFO L225 Difference]: With dead ends: 897 [2022-12-14 04:48:00,873 INFO L226 Difference]: Without dead ends: 890 [2022-12-14 04:48:00,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2022-12-14 04:48:00,874 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 290 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 04:48:00,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 0 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 04:48:00,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2022-12-14 04:48:00,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 626. [2022-12-14 04:48:00,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 625 states have (on average 2.8432) internal successors, (1777), 625 states have internal predecessors, (1777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:00,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 1777 transitions. [2022-12-14 04:48:00,881 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 1777 transitions. Word has length 36 [2022-12-14 04:48:00,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:48:00,881 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 1777 transitions. [2022-12-14 04:48:00,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:00,882 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 1777 transitions. [2022-12-14 04:48:00,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:48:00,882 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:00,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:48:00,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-12-14 04:48:00,882 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:48:00,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:00,883 INFO L85 PathProgramCache]: Analyzing trace with hash 718857700, now seen corresponding path program 26 times [2022-12-14 04:48:00,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:00,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86179317] [2022-12-14 04:48:00,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:00,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:02,223 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:48:02,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:02,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86179317] [2022-12-14 04:48:02,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86179317] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:48:02,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:48:02,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 04:48:02,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760787272] [2022-12-14 04:48:02,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:48:02,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 04:48:02,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:02,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 04:48:02,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:48:02,224 INFO L87 Difference]: Start difference. First operand 626 states and 1777 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:05,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:48:05,564 INFO L93 Difference]: Finished difference Result 1049 states and 2704 transitions. [2022-12-14 04:48:05,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 04:48:05,565 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 36 [2022-12-14 04:48:05,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:48:05,566 INFO L225 Difference]: With dead ends: 1049 [2022-12-14 04:48:05,566 INFO L226 Difference]: Without dead ends: 1042 [2022-12-14 04:48:05,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=351, Invalid=771, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 04:48:05,566 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 328 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:48:05,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 0 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 04:48:05,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2022-12-14 04:48:05,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 622. [2022-12-14 04:48:05,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 621 states have (on average 2.845410628019324) internal successors, (1767), 621 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:05,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 1767 transitions. [2022-12-14 04:48:05,575 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 1767 transitions. Word has length 36 [2022-12-14 04:48:05,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:48:05,575 INFO L495 AbstractCegarLoop]: Abstraction has 622 states and 1767 transitions. [2022-12-14 04:48:05,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:05,575 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1767 transitions. [2022-12-14 04:48:05,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:48:05,576 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:05,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:48:05,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-12-14 04:48:05,576 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:48:05,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:05,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1288691246, now seen corresponding path program 27 times [2022-12-14 04:48:05,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:05,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860521736] [2022-12-14 04:48:05,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:05,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:06,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:48:06,829 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:06,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860521736] [2022-12-14 04:48:06,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860521736] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:48:06,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:48:06,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 04:48:06,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256779921] [2022-12-14 04:48:06,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:48:06,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 04:48:06,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:06,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 04:48:06,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:48:06,830 INFO L87 Difference]: Start difference. First operand 622 states and 1767 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:10,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:48:10,323 INFO L93 Difference]: Finished difference Result 969 states and 2502 transitions. [2022-12-14 04:48:10,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 04:48:10,323 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 36 [2022-12-14 04:48:10,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:48:10,324 INFO L225 Difference]: With dead ends: 969 [2022-12-14 04:48:10,324 INFO L226 Difference]: Without dead ends: 962 [2022-12-14 04:48:10,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=300, Invalid=692, Unknown=0, NotChecked=0, Total=992 [2022-12-14 04:48:10,325 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 354 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:48:10,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 0 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 04:48:10,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2022-12-14 04:48:10,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 626. [2022-12-14 04:48:10,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 625 states have (on average 2.8384) internal successors, (1774), 625 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:10,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 1774 transitions. [2022-12-14 04:48:10,333 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 1774 transitions. Word has length 36 [2022-12-14 04:48:10,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:48:10,333 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 1774 transitions. [2022-12-14 04:48:10,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:10,333 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 1774 transitions. [2022-12-14 04:48:10,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:48:10,334 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:10,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:48:10,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-12-14 04:48:10,334 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:48:10,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:10,334 INFO L85 PathProgramCache]: Analyzing trace with hash 923711278, now seen corresponding path program 28 times [2022-12-14 04:48:10,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:10,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066137762] [2022-12-14 04:48:10,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:10,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:12,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:48:12,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:12,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066137762] [2022-12-14 04:48:12,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066137762] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:48:12,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:48:12,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 04:48:12,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362853561] [2022-12-14 04:48:12,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:48:12,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 04:48:12,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:12,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 04:48:12,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:48:12,112 INFO L87 Difference]: Start difference. First operand 626 states and 1774 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:15,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:48:15,248 INFO L93 Difference]: Finished difference Result 1113 states and 2830 transitions. [2022-12-14 04:48:15,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 04:48:15,248 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 36 [2022-12-14 04:48:15,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:48:15,250 INFO L225 Difference]: With dead ends: 1113 [2022-12-14 04:48:15,250 INFO L226 Difference]: Without dead ends: 1106 [2022-12-14 04:48:15,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=350, Invalid=772, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 04:48:15,250 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 309 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1305 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:48:15,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 0 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1305 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 04:48:15,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2022-12-14 04:48:15,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 624. [2022-12-14 04:48:15,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 623 states have (on average 2.836276083467095) internal successors, (1767), 623 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:15,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 1767 transitions. [2022-12-14 04:48:15,259 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 1767 transitions. Word has length 36 [2022-12-14 04:48:15,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:48:15,259 INFO L495 AbstractCegarLoop]: Abstraction has 624 states and 1767 transitions. [2022-12-14 04:48:15,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:15,259 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 1767 transitions. [2022-12-14 04:48:15,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:48:15,260 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:15,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:48:15,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-12-14 04:48:15,260 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:48:15,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:15,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1595439452, now seen corresponding path program 29 times [2022-12-14 04:48:15,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:15,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728717394] [2022-12-14 04:48:15,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:15,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:16,403 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:48:16,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:16,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728717394] [2022-12-14 04:48:16,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728717394] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:48:16,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:48:16,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 04:48:16,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405978381] [2022-12-14 04:48:16,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:48:16,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 04:48:16,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:16,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 04:48:16,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:48:16,405 INFO L87 Difference]: Start difference. First operand 624 states and 1767 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:19,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:48:19,235 INFO L93 Difference]: Finished difference Result 1070 states and 2849 transitions. [2022-12-14 04:48:19,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 04:48:19,235 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 36 [2022-12-14 04:48:19,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:48:19,236 INFO L225 Difference]: With dead ends: 1070 [2022-12-14 04:48:19,237 INFO L226 Difference]: Without dead ends: 1063 [2022-12-14 04:48:19,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=309, Invalid=683, Unknown=0, NotChecked=0, Total=992 [2022-12-14 04:48:19,237 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 366 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 04:48:19,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 0 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 04:48:19,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2022-12-14 04:48:19,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 637. [2022-12-14 04:48:19,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 636 states have (on average 2.839622641509434) internal successors, (1806), 636 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:19,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1806 transitions. [2022-12-14 04:48:19,246 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1806 transitions. Word has length 36 [2022-12-14 04:48:19,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:48:19,246 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 1806 transitions. [2022-12-14 04:48:19,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:19,246 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1806 transitions. [2022-12-14 04:48:19,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:48:19,247 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:19,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:48:19,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-12-14 04:48:19,247 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:48:19,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:19,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1141608706, now seen corresponding path program 30 times [2022-12-14 04:48:19,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:19,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291009892] [2022-12-14 04:48:19,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:19,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:20,441 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:48:20,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:20,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291009892] [2022-12-14 04:48:20,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291009892] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:48:20,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:48:20,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 04:48:20,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531291214] [2022-12-14 04:48:20,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:48:20,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 04:48:20,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:20,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 04:48:20,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-14 04:48:20,442 INFO L87 Difference]: Start difference. First operand 637 states and 1806 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:21,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:48:21,468 INFO L93 Difference]: Finished difference Result 817 states and 2147 transitions. [2022-12-14 04:48:21,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 04:48:21,468 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 36 [2022-12-14 04:48:21,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:48:21,470 INFO L225 Difference]: With dead ends: 817 [2022-12-14 04:48:21,470 INFO L226 Difference]: Without dead ends: 810 [2022-12-14 04:48:21,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2022-12-14 04:48:21,470 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 295 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:48:21,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 0 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 04:48:21,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2022-12-14 04:48:21,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 638. [2022-12-14 04:48:21,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 637 states have (on average 2.838304552590267) internal successors, (1808), 637 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:21,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1808 transitions. [2022-12-14 04:48:21,482 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1808 transitions. Word has length 36 [2022-12-14 04:48:21,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:48:21,483 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 1808 transitions. [2022-12-14 04:48:21,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:21,483 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1808 transitions. [2022-12-14 04:48:21,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:48:21,484 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:21,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:48:21,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-12-14 04:48:21,484 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:48:21,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:21,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1653739168, now seen corresponding path program 31 times [2022-12-14 04:48:21,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:21,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722885077] [2022-12-14 04:48:21,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:21,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:22,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:48:22,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:22,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722885077] [2022-12-14 04:48:22,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722885077] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:48:22,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:48:22,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 04:48:22,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569042724] [2022-12-14 04:48:22,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:48:22,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 04:48:22,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:22,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 04:48:22,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:48:22,795 INFO L87 Difference]: Start difference. First operand 638 states and 1808 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:24,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:48:24,550 INFO L93 Difference]: Finished difference Result 993 states and 2691 transitions. [2022-12-14 04:48:24,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 04:48:24,550 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 36 [2022-12-14 04:48:24,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:48:24,552 INFO L225 Difference]: With dead ends: 993 [2022-12-14 04:48:24,552 INFO L226 Difference]: Without dead ends: 979 [2022-12-14 04:48:24,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=181, Invalid=419, Unknown=0, NotChecked=0, Total=600 [2022-12-14 04:48:24,552 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 304 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 04:48:24,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 0 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 04:48:24,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2022-12-14 04:48:24,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 638. [2022-12-14 04:48:24,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 637 states have (on average 2.838304552590267) internal successors, (1808), 637 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:24,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1808 transitions. [2022-12-14 04:48:24,561 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1808 transitions. Word has length 36 [2022-12-14 04:48:24,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:48:24,561 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 1808 transitions. [2022-12-14 04:48:24,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:24,561 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1808 transitions. [2022-12-14 04:48:24,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:48:24,562 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:24,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:48:24,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-12-14 04:48:24,562 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:48:24,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:24,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1955708794, now seen corresponding path program 32 times [2022-12-14 04:48:24,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:24,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720262783] [2022-12-14 04:48:24,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:24,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:25,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:48:25,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:25,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720262783] [2022-12-14 04:48:25,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720262783] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:48:25,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:48:25,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 04:48:25,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357410501] [2022-12-14 04:48:25,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:48:25,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 04:48:25,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:25,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 04:48:25,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:48:25,734 INFO L87 Difference]: Start difference. First operand 638 states and 1808 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:28,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:48:28,197 INFO L93 Difference]: Finished difference Result 1018 states and 2738 transitions. [2022-12-14 04:48:28,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 04:48:28,197 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 36 [2022-12-14 04:48:28,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:48:28,198 INFO L225 Difference]: With dead ends: 1018 [2022-12-14 04:48:28,198 INFO L226 Difference]: Without dead ends: 1011 [2022-12-14 04:48:28,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=281, Invalid=649, Unknown=0, NotChecked=0, Total=930 [2022-12-14 04:48:28,199 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 307 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 04:48:28,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 0 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 04:48:28,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2022-12-14 04:48:28,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 638. [2022-12-14 04:48:28,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 637 states have (on average 2.838304552590267) internal successors, (1808), 637 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:28,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1808 transitions. [2022-12-14 04:48:28,208 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1808 transitions. Word has length 36 [2022-12-14 04:48:28,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:48:28,208 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 1808 transitions. [2022-12-14 04:48:28,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:28,208 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1808 transitions. [2022-12-14 04:48:28,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:48:28,209 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:28,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:48:28,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-12-14 04:48:28,209 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 04:48:28,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:28,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1070705248, now seen corresponding path program 33 times [2022-12-14 04:48:28,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:28,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986170223] [2022-12-14 04:48:28,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:28,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:30,295 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 04:48:30,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:30,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986170223] [2022-12-14 04:48:30,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986170223] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:48:30,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888893513] [2022-12-14 04:48:30,296 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 04:48:30,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:48:30,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:48:30,297 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:48:30,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c3effe-a25e-410a-aec0-f54a2424931d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 04:48:30,518 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 04:48:30,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:48:30,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-14 04:48:30,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:48:30,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:48:30,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:48:30,784 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 04:48:30,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2022-12-14 04:48:30,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:48:30,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:48:30,837 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 04:48:30,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2022-12-14 04:48:33,600 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 04:48:33,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 648 treesize of output 1696