./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-node-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9 --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 b79c2a620eba99d5ba65b548a8599a4feb45877b2c0c8388713c23f9a60bea18 --- 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-6b4ec56 [2022-11-20 19:53:17,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 19:53:17,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 19:53:17,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 19:53:17,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 19:53:17,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 19:53:17,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 19:53:17,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 19:53:17,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 19:53:17,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 19:53:17,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 19:53:17,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 19:53:17,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 19:53:17,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 19:53:17,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 19:53:17,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 19:53:17,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 19:53:17,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 19:53:17,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 19:53:17,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 19:53:17,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 19:53:17,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 19:53:17,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 19:53:17,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 19:53:17,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 19:53:17,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 19:53:17,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 19:53:17,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 19:53:17,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 19:53:17,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 19:53:17,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 19:53:17,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 19:53:17,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 19:53:17,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 19:53:17,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 19:53:17,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 19:53:17,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 19:53:17,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 19:53:17,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 19:53:17,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 19:53:17,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 19:53:17,923 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 19:53:17,963 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 19:53:17,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 19:53:17,964 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 19:53:17,964 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 19:53:17,965 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 19:53:17,966 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 19:53:17,966 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 19:53:17,966 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 19:53:17,966 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 19:53:17,967 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 19:53:17,968 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 19:53:17,968 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 19:53:17,968 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 19:53:17,969 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 19:53:17,969 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 19:53:17,969 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 19:53:17,969 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 19:53:17,969 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 19:53:17,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 19:53:17,970 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 19:53:17,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 19:53:17,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 19:53:17,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 19:53:17,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 19:53:17,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 19:53:17,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 19:53:17,972 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 19:53:17,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 19:53:17,973 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 19:53:17,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 19:53:17,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 19:53:17,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 19:53:17,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:53:17,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 19:53:17,974 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 19:53:17,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 19:53:17,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 19:53:17,975 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 19:53:17,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 19:53:17,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 19:53:17,975 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 19:53:17,975 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_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b79c2a620eba99d5ba65b548a8599a4feb45877b2c0c8388713c23f9a60bea18 [2022-11-20 19:53:18,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 19:53:18,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 19:53:18,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 19:53:18,295 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 19:53:18,296 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 19:53:18,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/weaver/chl-node-trans.wvr.c [2022-11-20 19:53:21,370 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 19:53:21,605 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 19:53:21,606 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/sv-benchmarks/c/weaver/chl-node-trans.wvr.c [2022-11-20 19:53:21,614 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/data/6d155453d/45886d0314064bddb191bf6b72fb3d2c/FLAG4d37295ac [2022-11-20 19:53:21,632 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/data/6d155453d/45886d0314064bddb191bf6b72fb3d2c [2022-11-20 19:53:21,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 19:53:21,636 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 19:53:21,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 19:53:21,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 19:53:21,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 19:53:21,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:53:21" (1/1) ... [2022-11-20 19:53:21,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@656bc65e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:21, skipping insertion in model container [2022-11-20 19:53:21,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:53:21" (1/1) ... [2022-11-20 19:53:21,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 19:53:21,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 19:53:21,934 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_657326a2-043b-4d46-95d3-9ce1d1e7e086/sv-benchmarks/c/weaver/chl-node-trans.wvr.c[3945,3958] [2022-11-20 19:53:21,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:53:21,989 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 19:53:22,041 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_657326a2-043b-4d46-95d3-9ce1d1e7e086/sv-benchmarks/c/weaver/chl-node-trans.wvr.c[3945,3958] [2022-11-20 19:53:22,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:53:22,071 INFO L208 MainTranslator]: Completed translation [2022-11-20 19:53:22,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:22 WrapperNode [2022-11-20 19:53:22,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 19:53:22,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 19:53:22,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 19:53:22,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 19:53:22,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:22" (1/1) ... [2022-11-20 19:53:22,110 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:22" (1/1) ... [2022-11-20 19:53:22,168 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 413 [2022-11-20 19:53:22,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 19:53:22,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 19:53:22,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 19:53:22,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 19:53:22,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:22" (1/1) ... [2022-11-20 19:53:22,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:22" (1/1) ... [2022-11-20 19:53:22,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:22" (1/1) ... [2022-11-20 19:53:22,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:22" (1/1) ... [2022-11-20 19:53:22,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:22" (1/1) ... [2022-11-20 19:53:22,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:22" (1/1) ... [2022-11-20 19:53:22,245 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:22" (1/1) ... [2022-11-20 19:53:22,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:22" (1/1) ... [2022-11-20 19:53:22,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 19:53:22,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 19:53:22,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 19:53:22,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 19:53:22,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:22" (1/1) ... [2022-11-20 19:53:22,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:53:22,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:53:22,308 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 19:53:22,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 19:53:22,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 19:53:22,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 19:53:22,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 19:53:22,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 19:53:22,363 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 19:53:22,363 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 19:53:22,363 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 19:53:22,363 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 19:53:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 19:53:22,364 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 19:53:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 19:53:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 19:53:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 19:53:22,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 19:53:22,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 19:53:22,367 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 19:53:22,576 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 19:53:22,579 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 19:53:23,339 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 19:53:23,359 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 19:53:23,360 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 19:53:23,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:53:23 BoogieIcfgContainer [2022-11-20 19:53:23,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 19:53:23,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 19:53:23,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 19:53:23,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 19:53:23,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:53:21" (1/3) ... [2022-11-20 19:53:23,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe0e775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:53:23, skipping insertion in model container [2022-11-20 19:53:23,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:22" (2/3) ... [2022-11-20 19:53:23,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe0e775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:53:23, skipping insertion in model container [2022-11-20 19:53:23,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:53:23" (3/3) ... [2022-11-20 19:53:23,380 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-trans.wvr.c [2022-11-20 19:53:23,390 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 19:53:23,400 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 19:53:23,400 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 19:53:23,400 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 19:53:23,516 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 19:53:23,568 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 19:53:23,585 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 513 places, 544 transitions, 1112 flow [2022-11-20 19:53:23,588 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 513 places, 544 transitions, 1112 flow [2022-11-20 19:53:23,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 513 places, 544 transitions, 1112 flow [2022-11-20 19:53:23,943 INFO L130 PetriNetUnfolder]: 41/541 cut-off events. [2022-11-20 19:53:23,943 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 19:53:23,956 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 690 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. [2022-11-20 19:53:23,969 INFO L119 LiptonReduction]: Number of co-enabled transitions 21384 [2022-11-20 19:53:49,277 INFO L134 LiptonReduction]: Checked pairs total: 23101 [2022-11-20 19:53:49,277 INFO L136 LiptonReduction]: Total number of compositions: 617 [2022-11-20 19:53:49,287 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 46 transitions, 116 flow [2022-11-20 19:53:49,343 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) [2022-11-20 19:53:49,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 19:53:49,390 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;@3cda2a1f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 19:53:49,391 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-20 19:53:49,395 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) [2022-11-20 19:53:49,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 19:53:49,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:53:49,420 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] [2022-11-20 19:53:49,420 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 19:53:49,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:53:49,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1233236341, now seen corresponding path program 1 times [2022-11-20 19:53:49,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:53:49,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514712645] [2022-11-20 19:53:49,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:53:49,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:53:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:53:49,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:53:49,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:53:49,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514712645] [2022-11-20 19:53:49,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514712645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:53:49,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:53:49,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:53:49,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857100377] [2022-11-20 19:53:49,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:53:49,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:53:49,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:53:49,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:53:49,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:53:49,983 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) [2022-11-20 19:53:50,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:53:50,183 INFO L93 Difference]: Finished difference Result 396 states and 1234 transitions. [2022-11-20 19:53:50,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:53:50,186 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 [2022-11-20 19:53:50,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:53:50,202 INFO L225 Difference]: With dead ends: 396 [2022-11-20 19:53:50,202 INFO L226 Difference]: Without dead ends: 396 [2022-11-20 19:53:50,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:53:50,206 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:53:50,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 19:53:50,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-11-20 19:53:50,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2022-11-20 19:53:50,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.1240506329113926) internal successors, (1234), 395 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:53:50,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1234 transitions. [2022-11-20 19:53:50,280 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1234 transitions. Word has length 28 [2022-11-20 19:53:50,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:53:50,281 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 1234 transitions. [2022-11-20 19:53:50,282 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) [2022-11-20 19:53:50,282 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1234 transitions. [2022-11-20 19:53:50,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 19:53:50,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:53:50,285 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] [2022-11-20 19:53:50,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 19:53:50,286 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 19:53:50,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:53:50,287 INFO L85 PathProgramCache]: Analyzing trace with hash 598560252, now seen corresponding path program 1 times [2022-11-20 19:53:50,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:53:50,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344932725] [2022-11-20 19:53:50,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:53:50,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:53:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:53:50,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:53:50,429 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:53:50,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344932725] [2022-11-20 19:53:50,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344932725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:53:50,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:53:50,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:53:50,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077398874] [2022-11-20 19:53:50,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:53:50,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:53:50,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:53:50,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:53:50,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:53:50,434 INFO L87 Difference]: Start difference. First operand 396 states and 1234 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) [2022-11-20 19:53:50,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:53:50,580 INFO L93 Difference]: Finished difference Result 446 states and 1388 transitions. [2022-11-20 19:53:50,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:53:50,580 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 [2022-11-20 19:53:50,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:53:50,585 INFO L225 Difference]: With dead ends: 446 [2022-11-20 19:53:50,585 INFO L226 Difference]: Without dead ends: 446 [2022-11-20 19:53:50,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:53:50,587 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 [2022-11-20 19:53:50,587 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] [2022-11-20 19:53:50,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-11-20 19:53:50,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2022-11-20 19:53:50,635 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) [2022-11-20 19:53:50,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1388 transitions. [2022-11-20 19:53:50,647 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1388 transitions. Word has length 29 [2022-11-20 19:53:50,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:53:50,648 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 1388 transitions. [2022-11-20 19:53:50,648 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) [2022-11-20 19:53:50,648 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1388 transitions. [2022-11-20 19:53:50,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 19:53:50,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:53:50,654 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] [2022-11-20 19:53:50,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 19:53:50,655 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 19:53:50,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:53:50,657 INFO L85 PathProgramCache]: Analyzing trace with hash -563157914, now seen corresponding path program 1 times [2022-11-20 19:53:50,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:53:50,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713803063] [2022-11-20 19:53:50,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:53:50,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:53:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:53:51,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:53:51,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:53:51,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713803063] [2022-11-20 19:53:51,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713803063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:53:51,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:53:51,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 19:53:51,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724428264] [2022-11-20 19:53:51,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:53:51,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:53:51,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:53:51,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:53:51,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:53:51,039 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) [2022-11-20 19:53:51,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:53:51,165 INFO L93 Difference]: Finished difference Result 447 states and 1389 transitions. [2022-11-20 19:53:51,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:53:51,166 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 [2022-11-20 19:53:51,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:53:51,170 INFO L225 Difference]: With dead ends: 447 [2022-11-20 19:53:51,171 INFO L226 Difference]: Without dead ends: 447 [2022-11-20 19:53:51,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:53:51,175 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 [2022-11-20 19:53:51,177 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] [2022-11-20 19:53:51,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-11-20 19:53:51,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2022-11-20 19:53:51,213 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) [2022-11-20 19:53:51,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1389 transitions. [2022-11-20 19:53:51,217 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1389 transitions. Word has length 30 [2022-11-20 19:53:51,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:53:51,219 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 1389 transitions. [2022-11-20 19:53:51,219 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) [2022-11-20 19:53:51,220 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1389 transitions. [2022-11-20 19:53:51,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 19:53:51,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:53:51,222 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] [2022-11-20 19:53:51,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 19:53:51,223 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 19:53:51,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:53:51,223 INFO L85 PathProgramCache]: Analyzing trace with hash -2050864577, now seen corresponding path program 1 times [2022-11-20 19:53:51,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:53:51,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48792426] [2022-11-20 19:53:51,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:53:51,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:53:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:53:51,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 19:53:51,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:53:51,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48792426] [2022-11-20 19:53:51,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48792426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:53:51,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:53:51,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:53:51,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250527430] [2022-11-20 19:53:51,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:53:51,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:53:51,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:53:51,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:53:51,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:53:51,467 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) [2022-11-20 19:53:51,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:53:51,587 INFO L93 Difference]: Finished difference Result 448 states and 1390 transitions. [2022-11-20 19:53:51,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 19:53:51,588 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 [2022-11-20 19:53:51,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:53:51,591 INFO L225 Difference]: With dead ends: 448 [2022-11-20 19:53:51,592 INFO L226 Difference]: Without dead ends: 448 [2022-11-20 19:53:51,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:53:51,595 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 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 [2022-11-20 19:53:51,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 0 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:53:51,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-20 19:53:51,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2022-11-20 19:53:51,616 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) [2022-11-20 19:53:51,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 1390 transitions. [2022-11-20 19:53:51,620 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 1390 transitions. Word has length 31 [2022-11-20 19:53:51,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:53:51,620 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 1390 transitions. [2022-11-20 19:53:51,621 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) [2022-11-20 19:53:51,622 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1390 transitions. [2022-11-20 19:53:51,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 19:53:51,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:53:51,626 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] [2022-11-20 19:53:51,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 19:53:51,627 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 19:53:51,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:53:51,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1644809955, now seen corresponding path program 1 times [2022-11-20 19:53:51,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:53:51,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803981772] [2022-11-20 19:53:51,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:53:51,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:53:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:53:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 19:53:51,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:53:51,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803981772] [2022-11-20 19:53:51,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803981772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:53:51,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:53:51,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:53:51,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822623378] [2022-11-20 19:53:51,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:53:51,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:53:51,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:53:51,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:53:51,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:53:51,871 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) [2022-11-20 19:53:51,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:53:52,000 INFO L93 Difference]: Finished difference Result 449 states and 1391 transitions. [2022-11-20 19:53:52,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 19:53:52,000 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 [2022-11-20 19:53:52,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:53:52,004 INFO L225 Difference]: With dead ends: 449 [2022-11-20 19:53:52,004 INFO L226 Difference]: Without dead ends: 449 [2022-11-20 19:53:52,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:53:52,005 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 [2022-11-20 19:53:52,006 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] [2022-11-20 19:53:52,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-11-20 19:53:52,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2022-11-20 19:53:52,022 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) [2022-11-20 19:53:52,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 1391 transitions. [2022-11-20 19:53:52,025 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 1391 transitions. Word has length 32 [2022-11-20 19:53:52,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:53:52,026 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 1391 transitions. [2022-11-20 19:53:52,026 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) [2022-11-20 19:53:52,026 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 1391 transitions. [2022-11-20 19:53:52,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 19:53:52,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:53:52,028 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] [2022-11-20 19:53:52,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 19:53:52,029 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 19:53:52,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:53:52,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1303251310, now seen corresponding path program 1 times [2022-11-20 19:53:52,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:53:52,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622474859] [2022-11-20 19:53:52,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:53:52,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:53:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:53:52,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 19:53:52,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:53:52,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622474859] [2022-11-20 19:53:52,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622474859] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:53:52,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661883819] [2022-11-20 19:53:52,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:53:52,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:53:52,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:53:52,401 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:53:52,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 19:53:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:53:52,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 19:53:52,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:53:52,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 19:53:52,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:53:52,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661883819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:53:52,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 19:53:52,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-20 19:53:52,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362332860] [2022-11-20 19:53:52,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:53:52,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:53:52,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:53:52,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:53:52,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 19:53:52,688 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) [2022-11-20 19:53:52,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:53:52,833 INFO L93 Difference]: Finished difference Result 450 states and 1392 transitions. [2022-11-20 19:53:52,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 19:53:52,834 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 [2022-11-20 19:53:52,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:53:52,837 INFO L225 Difference]: With dead ends: 450 [2022-11-20 19:53:52,837 INFO L226 Difference]: Without dead ends: 450 [2022-11-20 19:53:52,838 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 [2022-11-20 19:53:52,839 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 [2022-11-20 19:53:52,840 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] [2022-11-20 19:53:52,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-11-20 19:53:52,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2022-11-20 19:53:52,856 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) [2022-11-20 19:53:52,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1392 transitions. [2022-11-20 19:53:52,859 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1392 transitions. Word has length 33 [2022-11-20 19:53:52,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:53:52,860 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 1392 transitions. [2022-11-20 19:53:52,860 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) [2022-11-20 19:53:52,860 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1392 transitions. [2022-11-20 19:53:52,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 19:53:52,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:53:52,863 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] [2022-11-20 19:53:52,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 19:53:53,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 19:53:53,070 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 19:53:53,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:53:53,071 INFO L85 PathProgramCache]: Analyzing trace with hash -2122889334, now seen corresponding path program 1 times [2022-11-20 19:53:53,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:53:53,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317739769] [2022-11-20 19:53:53,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:53:53,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:53:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:53:53,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 19:53:53,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:53:53,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317739769] [2022-11-20 19:53:53,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317739769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:53:53,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:53:53,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:53:53,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214851461] [2022-11-20 19:53:53,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:53:53,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:53:53,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:53:53,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:53:53,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:53:53,369 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) [2022-11-20 19:53:53,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:53:53,486 INFO L93 Difference]: Finished difference Result 451 states and 1393 transitions. [2022-11-20 19:53:53,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 19:53:53,487 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 [2022-11-20 19:53:53,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:53:53,490 INFO L225 Difference]: With dead ends: 451 [2022-11-20 19:53:53,491 INFO L226 Difference]: Without dead ends: 451 [2022-11-20 19:53:53,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:53:53,492 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-11-20 19:53:53,492 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] [2022-11-20 19:53:53,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-20 19:53:53,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2022-11-20 19:53:53,508 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) [2022-11-20 19:53:53,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 1393 transitions. [2022-11-20 19:53:53,511 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 1393 transitions. Word has length 34 [2022-11-20 19:53:53,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:53:53,512 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 1393 transitions. [2022-11-20 19:53:53,512 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) [2022-11-20 19:53:53,512 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 1393 transitions. [2022-11-20 19:53:53,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-20 19:53:53,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:53:53,515 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] [2022-11-20 19:53:53,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 19:53:53,515 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 19:53:53,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:53:53,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1079879516, now seen corresponding path program 1 times [2022-11-20 19:53:53,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:53:53,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777178564] [2022-11-20 19:53:53,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:53:53,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:53:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:53:53,757 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 19:53:53,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:53:53,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777178564] [2022-11-20 19:53:53,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777178564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:53:53,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:53:53,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:53:53,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424651906] [2022-11-20 19:53:53,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:53:53,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:53:53,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:53:53,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:53:53,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:53:53,759 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) [2022-11-20 19:53:53,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:53:53,877 INFO L93 Difference]: Finished difference Result 452 states and 1394 transitions. [2022-11-20 19:53:53,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 19:53:53,878 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 [2022-11-20 19:53:53,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:53:53,882 INFO L225 Difference]: With dead ends: 452 [2022-11-20 19:53:53,882 INFO L226 Difference]: Without dead ends: 452 [2022-11-20 19:53:53,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:53:53,883 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 [2022-11-20 19:53:53,883 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] [2022-11-20 19:53:53,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-11-20 19:53:53,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2022-11-20 19:53:53,898 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) [2022-11-20 19:53:53,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1394 transitions. [2022-11-20 19:53:53,902 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1394 transitions. Word has length 35 [2022-11-20 19:53:53,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:53:53,902 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 1394 transitions. [2022-11-20 19:53:53,903 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) [2022-11-20 19:53:53,903 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1394 transitions. [2022-11-20 19:53:53,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:53:53,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:53:53,905 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] [2022-11-20 19:53:53,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 19:53:53,906 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 19:53:53,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:53:53,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1507111471, now seen corresponding path program 1 times [2022-11-20 19:53:53,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:53:53,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795128724] [2022-11-20 19:53:53,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:53:53,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:53:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:53:54,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:53:54,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:53:54,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795128724] [2022-11-20 19:53:54,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795128724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:53:54,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:53:54,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 19:53:54,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865036738] [2022-11-20 19:53:54,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:53:54,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:53:54,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:53:54,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:53:54,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:53:54,347 INFO L87 Difference]: Start difference. First operand 452 states and 1394 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:53:54,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:53:54,572 INFO L93 Difference]: Finished difference Result 639 states and 1893 transitions. [2022-11-20 19:53:54,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 19:53:54,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:53:54,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:53:54,576 INFO L225 Difference]: With dead ends: 639 [2022-11-20 19:53:54,576 INFO L226 Difference]: Without dead ends: 639 [2022-11-20 19:53:54,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:53:54,577 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:53:54,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 19:53:54,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-11-20 19:53:54,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 520. [2022-11-20 19:53:54,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 519 states have (on average 3.065510597302505) internal successors, (1591), 519 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) [2022-11-20 19:53:54,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 1591 transitions. [2022-11-20 19:53:54,599 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 1591 transitions. Word has length 36 [2022-11-20 19:53:54,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:53:54,600 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 1591 transitions. [2022-11-20 19:53:54,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:53:54,600 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 1591 transitions. [2022-11-20 19:53:54,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:53:54,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:53:54,602 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] [2022-11-20 19:53:54,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 19:53:54,602 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 19:53:54,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:53:54,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1690454929, now seen corresponding path program 2 times [2022-11-20 19:53:54,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:53:54,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641910322] [2022-11-20 19:53:54,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:53:54,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:53:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:53:55,214 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:53:55,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:53:55,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641910322] [2022-11-20 19:53:55,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641910322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:53:55,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:53:55,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 19:53:55,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081329449] [2022-11-20 19:53:55,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:53:55,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 19:53:55,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:53:55,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 19:53:55,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 19:53:55,218 INFO L87 Difference]: Start difference. First operand 520 states and 1591 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:53:55,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:53:55,525 INFO L93 Difference]: Finished difference Result 637 states and 1885 transitions. [2022-11-20 19:53:55,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 19:53:55,526 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:53:55,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:53:55,530 INFO L225 Difference]: With dead ends: 637 [2022-11-20 19:53:55,530 INFO L226 Difference]: Without dead ends: 637 [2022-11-20 19:53:55,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-11-20 19:53:55,531 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 137 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:53:55,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 0 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 19:53:55,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-11-20 19:53:55,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 500. [2022-11-20 19:53:55,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 3.05811623246493) internal successors, (1526), 499 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:53:55,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 1526 transitions. [2022-11-20 19:53:55,554 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 1526 transitions. Word has length 36 [2022-11-20 19:53:55,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:53:55,557 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 1526 transitions. [2022-11-20 19:53:55,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:53:55,557 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 1526 transitions. [2022-11-20 19:53:55,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:53:55,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:53:55,559 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] [2022-11-20 19:53:55,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 19:53:55,559 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 19:53:55,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:53:55,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1653666515, now seen corresponding path program 1 times [2022-11-20 19:53:55,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:53:55,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593872769] [2022-11-20 19:53:55,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:53:55,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:53:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:53:57,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:53:57,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:53:57,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593872769] [2022-11-20 19:53:57,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593872769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:53:57,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:53:57,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 19:53:57,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46195481] [2022-11-20 19:53:57,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:53:57,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 19:53:57,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:53:57,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 19:53:57,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-20 19:53:57,642 INFO L87 Difference]: Start difference. First operand 500 states and 1526 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) [2022-11-20 19:53:59,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:53:59,827 INFO L93 Difference]: Finished difference Result 1503 states and 4515 transitions. [2022-11-20 19:53:59,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 19:53:59,827 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 [2022-11-20 19:53:59,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:53:59,836 INFO L225 Difference]: With dead ends: 1503 [2022-11-20 19:53:59,836 INFO L226 Difference]: Without dead ends: 1474 [2022-11-20 19:53:59,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=232, Invalid=524, Unknown=0, NotChecked=0, Total=756 [2022-11-20 19:53:59,837 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 361 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:53:59,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 0 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 19:53:59,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2022-11-20 19:53:59,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 569. [2022-11-20 19:53:59,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 3.1778169014084505) internal successors, (1805), 568 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:53:59,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1805 transitions. [2022-11-20 19:53:59,871 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1805 transitions. Word has length 36 [2022-11-20 19:53:59,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:53:59,871 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 1805 transitions. [2022-11-20 19:53:59,871 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) [2022-11-20 19:53:59,872 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1805 transitions. [2022-11-20 19:53:59,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:53:59,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:53:59,874 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] [2022-11-20 19:53:59,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 19:53:59,874 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)] === [2022-11-20 19:53:59,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:53:59,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1409544027, now seen corresponding path program 2 times [2022-11-20 19:53:59,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:53:59,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021404082] [2022-11-20 19:53:59,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:53:59,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:54:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:54:01,835 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:54:01,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:54:01,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021404082] [2022-11-20 19:54:01,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021404082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:54:01,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:54:01,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 19:54:01,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134960363] [2022-11-20 19:54:01,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:54:01,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 19:54:01,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:54:01,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 19:54:01,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-20 19:54:01,838 INFO L87 Difference]: Start difference. First operand 569 states and 1805 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) [2022-11-20 19:54:04,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:54:04,414 INFO L93 Difference]: Finished difference Result 1508 states and 4521 transitions. [2022-11-20 19:54:04,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 19:54:04,415 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 [2022-11-20 19:54:04,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:54:04,425 INFO L225 Difference]: With dead ends: 1508 [2022-11-20 19:54:04,426 INFO L226 Difference]: Without dead ends: 1494 [2022-11-20 19:54:04,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=232, Invalid=524, Unknown=0, NotChecked=0, Total=756 [2022-11-20 19:54:04,427 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 387 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 19:54:04,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 0 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 19:54:04,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2022-11-20 19:54:04,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 557. [2022-11-20 19:54:04,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 556 states have (on average 3.1906474820143886) internal successors, (1774), 556 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) [2022-11-20 19:54:04,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 1774 transitions. [2022-11-20 19:54:04,462 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 1774 transitions. Word has length 36 [2022-11-20 19:54:04,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:54:04,463 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 1774 transitions. [2022-11-20 19:54:04,463 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) [2022-11-20 19:54:04,463 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 1774 transitions. [2022-11-20 19:54:04,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:54:04,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:54:04,465 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] [2022-11-20 19:54:04,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 19:54:04,466 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)] === [2022-11-20 19:54:04,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:54:04,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1008356539, now seen corresponding path program 3 times [2022-11-20 19:54:04,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:54:04,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867655600] [2022-11-20 19:54:04,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:54:04,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:54:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:54:06,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:54:06,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:54:06,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867655600] [2022-11-20 19:54:06,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867655600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:54:06,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:54:06,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 19:54:06,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999297919] [2022-11-20 19:54:06,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:54:06,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 19:54:06,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:54:06,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 19:54:06,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-20 19:54:06,631 INFO L87 Difference]: Start difference. First operand 557 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) [2022-11-20 19:54:08,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:54:08,730 INFO L93 Difference]: Finished difference Result 1543 states and 4631 transitions. [2022-11-20 19:54:08,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 19:54:08,730 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 [2022-11-20 19:54:08,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:54:08,739 INFO L225 Difference]: With dead ends: 1543 [2022-11-20 19:54:08,739 INFO L226 Difference]: Without dead ends: 1514 [2022-11-20 19:54:08,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=232, Invalid=524, Unknown=0, NotChecked=0, Total=756 [2022-11-20 19:54:08,740 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 428 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:54:08,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 0 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 19:54:08,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2022-11-20 19:54:08,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 575. [2022-11-20 19:54:08,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 3.1794425087108014) internal successors, (1825), 574 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:08,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1825 transitions. [2022-11-20 19:54:08,775 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1825 transitions. Word has length 36 [2022-11-20 19:54:08,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:54:08,776 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 1825 transitions. [2022-11-20 19:54:08,776 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) [2022-11-20 19:54:08,776 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1825 transitions. [2022-11-20 19:54:08,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:54:08,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:54:08,779 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] [2022-11-20 19:54:08,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 19:54:08,779 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)] === [2022-11-20 19:54:08,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:54:08,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1383896681, now seen corresponding path program 4 times [2022-11-20 19:54:08,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:54:08,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656318410] [2022-11-20 19:54:08,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:54:08,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:54:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:54:10,296 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:54:10,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:54:10,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656318410] [2022-11-20 19:54:10,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656318410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:54:10,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:54:10,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 19:54:10,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257839161] [2022-11-20 19:54:10,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:54:10,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 19:54:10,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:54:10,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 19:54:10,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-20 19:54:10,299 INFO L87 Difference]: Start difference. First operand 575 states and 1825 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) [2022-11-20 19:54:12,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:54:12,340 INFO L93 Difference]: Finished difference Result 1568 states and 4681 transitions. [2022-11-20 19:54:12,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 19:54:12,341 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 [2022-11-20 19:54:12,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:54:12,351 INFO L225 Difference]: With dead ends: 1568 [2022-11-20 19:54:12,351 INFO L226 Difference]: Without dead ends: 1554 [2022-11-20 19:54:12,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=234, Invalid=522, Unknown=0, NotChecked=0, Total=756 [2022-11-20 19:54:12,352 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 343 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:54:12,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 0 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 19:54:12,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2022-11-20 19:54:12,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 577. [2022-11-20 19:54:12,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 576 states have (on average 3.173611111111111) internal successors, (1828), 576 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:12,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 1828 transitions. [2022-11-20 19:54:12,389 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 1828 transitions. Word has length 36 [2022-11-20 19:54:12,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:54:12,389 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 1828 transitions. [2022-11-20 19:54:12,389 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) [2022-11-20 19:54:12,390 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 1828 transitions. [2022-11-20 19:54:12,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:54:12,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:54:12,392 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] [2022-11-20 19:54:12,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 19:54:12,393 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)] === [2022-11-20 19:54:12,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:54:12,393 INFO L85 PathProgramCache]: Analyzing trace with hash -601172835, now seen corresponding path program 5 times [2022-11-20 19:54:12,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:54:12,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591228299] [2022-11-20 19:54:12,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:54:12,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:54:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:54:14,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:54:14,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:54:14,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591228299] [2022-11-20 19:54:14,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591228299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:54:14,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:54:14,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 19:54:14,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032386430] [2022-11-20 19:54:14,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:54:14,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 19:54:14,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:54:14,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 19:54:14,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-20 19:54:14,113 INFO L87 Difference]: Start difference. First operand 577 states and 1828 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) [2022-11-20 19:54:15,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:54:15,815 INFO L93 Difference]: Finished difference Result 1652 states and 4968 transitions. [2022-11-20 19:54:15,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 19:54:15,815 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 [2022-11-20 19:54:15,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:54:15,826 INFO L225 Difference]: With dead ends: 1652 [2022-11-20 19:54:15,826 INFO L226 Difference]: Without dead ends: 1638 [2022-11-20 19:54:15,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=236, Invalid=520, Unknown=0, NotChecked=0, Total=756 [2022-11-20 19:54:15,829 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 396 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:54:15,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 0 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 19:54:15,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2022-11-20 19:54:15,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 595. [2022-11-20 19:54:15,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 594 states have (on average 3.1936026936026938) internal successors, (1897), 594 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:15,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 1897 transitions. [2022-11-20 19:54:15,866 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 1897 transitions. Word has length 36 [2022-11-20 19:54:15,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:54:15,868 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 1897 transitions. [2022-11-20 19:54:15,868 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) [2022-11-20 19:54:15,869 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 1897 transitions. [2022-11-20 19:54:15,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:54:15,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:54:15,871 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] [2022-11-20 19:54:15,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 19:54:15,872 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)] === [2022-11-20 19:54:15,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:54:15,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1854142971, now seen corresponding path program 6 times [2022-11-20 19:54:15,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:54:15,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093797658] [2022-11-20 19:54:15,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:54:15,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:54:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:54:17,952 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 19:54:17,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:54:17,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093797658] [2022-11-20 19:54:17,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093797658] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:54:17,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755889726] [2022-11-20 19:54:17,953 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 19:54:17,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:54:17,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:54:17,954 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:54:17,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 19:54:18,185 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 19:54:18,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 19:54:18,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 19:54:18,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:54:18,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:54:18,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:54:18,812 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 19:54:18,813 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 [2022-11-20 19:54:19,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:54:19,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:54:19,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:54:19,397 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 19:54:19,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 57 [2022-11-20 19:54:19,807 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 19:54:19,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 257 treesize of output 333 [2022-11-20 19:54:21,082 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:54:21,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:54:21,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755889726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:54:21,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 19:54:21,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14] total 27 [2022-11-20 19:54:21,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828361093] [2022-11-20 19:54:21,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:54:21,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 19:54:21,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:54:21,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 19:54:21,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=738, Unknown=0, NotChecked=0, Total=812 [2022-11-20 19:54:21,086 INFO L87 Difference]: Start difference. First operand 595 states and 1897 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) [2022-11-20 19:54:23,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:54:23,830 INFO L93 Difference]: Finished difference Result 1372 states and 4249 transitions. [2022-11-20 19:54:23,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 19:54:23,830 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 [2022-11-20 19:54:23,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:54:23,839 INFO L225 Difference]: With dead ends: 1372 [2022-11-20 19:54:23,839 INFO L226 Difference]: Without dead ends: 1358 [2022-11-20 19:54:23,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=303, Invalid=1503, Unknown=0, NotChecked=0, Total=1806 [2022-11-20 19:54:23,840 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 314 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 253 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 19:54:23,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 0 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 533 Invalid, 0 Unknown, 253 Unchecked, 0.8s Time] [2022-11-20 19:54:23,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2022-11-20 19:54:23,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 732. [2022-11-20 19:54:23,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 3.4090287277701776) internal successors, (2492), 731 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:23,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 2492 transitions. [2022-11-20 19:54:23,879 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 2492 transitions. Word has length 36 [2022-11-20 19:54:23,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:54:23,879 INFO L495 AbstractCegarLoop]: Abstraction has 732 states and 2492 transitions. [2022-11-20 19:54:23,880 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) [2022-11-20 19:54:23,880 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 2492 transitions. [2022-11-20 19:54:23,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:54:23,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:54:23,883 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] [2022-11-20 19:54:23,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 19:54:24,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 19:54:24,090 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)] === [2022-11-20 19:54:24,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:54:24,092 INFO L85 PathProgramCache]: Analyzing trace with hash -934914407, now seen corresponding path program 7 times [2022-11-20 19:54:24,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:54:24,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265509823] [2022-11-20 19:54:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:54:24,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:54:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:54:25,519 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:54:25,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:54:25,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265509823] [2022-11-20 19:54:25,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265509823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:54:25,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:54:25,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 19:54:25,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854319258] [2022-11-20 19:54:25,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:54:25,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 19:54:25,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:54:25,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 19:54:25,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-20 19:54:25,522 INFO L87 Difference]: Start difference. First operand 732 states and 2492 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) [2022-11-20 19:54:27,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:54:27,271 INFO L93 Difference]: Finished difference Result 1858 states and 5774 transitions. [2022-11-20 19:54:27,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 19:54:27,272 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 [2022-11-20 19:54:27,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:54:27,284 INFO L225 Difference]: With dead ends: 1858 [2022-11-20 19:54:27,285 INFO L226 Difference]: Without dead ends: 1844 [2022-11-20 19:54:27,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=236, Invalid=520, Unknown=0, NotChecked=0, Total=756 [2022-11-20 19:54:27,286 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 354 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:54:27,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 0 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 19:54:27,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-11-20 19:54:27,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 656. [2022-11-20 19:54:27,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 655 states have (on average 3.3038167938931298) internal successors, (2164), 655 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:27,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 2164 transitions. [2022-11-20 19:54:27,325 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 2164 transitions. Word has length 36 [2022-11-20 19:54:27,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:54:27,325 INFO L495 AbstractCegarLoop]: Abstraction has 656 states and 2164 transitions. [2022-11-20 19:54:27,325 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) [2022-11-20 19:54:27,325 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 2164 transitions. [2022-11-20 19:54:27,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:54:27,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:54:27,328 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] [2022-11-20 19:54:27,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 19:54:27,328 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)] === [2022-11-20 19:54:27,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:54:27,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1125129189, now seen corresponding path program 3 times [2022-11-20 19:54:27,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:54:27,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532430235] [2022-11-20 19:54:27,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:54:27,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:54:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:54:27,630 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:54:27,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:54:27,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532430235] [2022-11-20 19:54:27,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532430235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:54:27,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:54:27,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 19:54:27,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888106529] [2022-11-20 19:54:27,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:54:27,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:54:27,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:54:27,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:54:27,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:54:27,633 INFO L87 Difference]: Start difference. First operand 656 states and 2164 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:27,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:54:27,822 INFO L93 Difference]: Finished difference Result 933 states and 2970 transitions. [2022-11-20 19:54:27,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 19:54:27,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:54:27,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:54:27,827 INFO L225 Difference]: With dead ends: 933 [2022-11-20 19:54:27,828 INFO L226 Difference]: Without dead ends: 933 [2022-11-20 19:54:27,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:54:27,828 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:54:27,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 19:54:27,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2022-11-20 19:54:27,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 692. [2022-11-20 19:54:27,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 691 states have (on average 3.3675832127351666) internal successors, (2327), 691 states have internal predecessors, (2327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:27,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 2327 transitions. [2022-11-20 19:54:27,857 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 2327 transitions. Word has length 36 [2022-11-20 19:54:27,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:54:27,858 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 2327 transitions. [2022-11-20 19:54:27,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:27,858 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 2327 transitions. [2022-11-20 19:54:27,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:54:27,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:54:27,861 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] [2022-11-20 19:54:27,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 19:54:27,861 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)] === [2022-11-20 19:54:27,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:54:27,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1591823613, now seen corresponding path program 4 times [2022-11-20 19:54:27,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:54:27,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751131725] [2022-11-20 19:54:27,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:54:27,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:54:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:54:28,158 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:54:28,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:54:28,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751131725] [2022-11-20 19:54:28,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751131725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:54:28,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:54:28,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 19:54:28,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450151201] [2022-11-20 19:54:28,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:54:28,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:54:28,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:54:28,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:54:28,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:54:28,161 INFO L87 Difference]: Start difference. First operand 692 states and 2327 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:28,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:54:28,402 INFO L93 Difference]: Finished difference Result 943 states and 3052 transitions. [2022-11-20 19:54:28,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 19:54:28,403 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:54:28,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:54:28,407 INFO L225 Difference]: With dead ends: 943 [2022-11-20 19:54:28,407 INFO L226 Difference]: Without dead ends: 943 [2022-11-20 19:54:28,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:54:28,408 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:54:28,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 19:54:28,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2022-11-20 19:54:28,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 733. [2022-11-20 19:54:28,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 732 states have (on average 3.300546448087432) internal successors, (2416), 732 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:28,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 2416 transitions. [2022-11-20 19:54:28,442 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 2416 transitions. Word has length 36 [2022-11-20 19:54:28,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:54:28,443 INFO L495 AbstractCegarLoop]: Abstraction has 733 states and 2416 transitions. [2022-11-20 19:54:28,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:28,443 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 2416 transitions. [2022-11-20 19:54:28,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:54:28,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:54:28,446 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] [2022-11-20 19:54:28,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 19:54:28,446 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)] === [2022-11-20 19:54:28,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:54:28,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1315750899, now seen corresponding path program 5 times [2022-11-20 19:54:28,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:54:28,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402867554] [2022-11-20 19:54:28,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:54:28,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:54:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:54:28,940 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:54:28,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:54:28,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402867554] [2022-11-20 19:54:28,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402867554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:54:28,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:54:28,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 19:54:28,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753029444] [2022-11-20 19:54:28,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:54:28,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 19:54:28,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:54:28,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 19:54:28,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 19:54:28,946 INFO L87 Difference]: Start difference. First operand 733 states and 2416 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) [2022-11-20 19:54:29,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:54:29,263 INFO L93 Difference]: Finished difference Result 1012 states and 3281 transitions. [2022-11-20 19:54:29,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 19:54:29,264 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 [2022-11-20 19:54:29,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:54:29,269 INFO L225 Difference]: With dead ends: 1012 [2022-11-20 19:54:29,269 INFO L226 Difference]: Without dead ends: 1012 [2022-11-20 19:54:29,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-20 19:54:29,270 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 149 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 19:54:29,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 0 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 19:54:29,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2022-11-20 19:54:29,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 763. [2022-11-20 19:54:29,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 762 states have (on average 3.351706036745407) internal successors, (2554), 762 states have internal predecessors, (2554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:29,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 2554 transitions. [2022-11-20 19:54:29,302 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 2554 transitions. Word has length 36 [2022-11-20 19:54:29,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:54:29,303 INFO L495 AbstractCegarLoop]: Abstraction has 763 states and 2554 transitions. [2022-11-20 19:54:29,303 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) [2022-11-20 19:54:29,303 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 2554 transitions. [2022-11-20 19:54:29,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:54:29,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:54:29,310 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] [2022-11-20 19:54:29,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 19:54:29,311 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)] === [2022-11-20 19:54:29,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:54:29,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1298917667, now seen corresponding path program 6 times [2022-11-20 19:54:29,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:54:29,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655294649] [2022-11-20 19:54:29,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:54:29,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:54:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:54:29,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:54:29,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:54:29,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655294649] [2022-11-20 19:54:29,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655294649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:54:29,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:54:29,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 19:54:29,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753419555] [2022-11-20 19:54:29,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:54:29,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 19:54:29,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:54:29,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 19:54:29,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 19:54:29,754 INFO L87 Difference]: Start difference. First operand 763 states and 2554 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) [2022-11-20 19:54:30,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:54:30,005 INFO L93 Difference]: Finished difference Result 912 states and 2977 transitions. [2022-11-20 19:54:30,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 19:54:30,006 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 [2022-11-20 19:54:30,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:54:30,010 INFO L225 Difference]: With dead ends: 912 [2022-11-20 19:54:30,010 INFO L226 Difference]: Without dead ends: 912 [2022-11-20 19:54:30,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-20 19:54:30,011 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 201 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:54:30,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 0 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 19:54:30,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2022-11-20 19:54:30,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 731. [2022-11-20 19:54:30,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 730 states have (on average 3.297260273972603) internal successors, (2407), 730 states have internal predecessors, (2407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:30,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 2407 transitions. [2022-11-20 19:54:30,040 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 2407 transitions. Word has length 36 [2022-11-20 19:54:30,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:54:30,042 INFO L495 AbstractCegarLoop]: Abstraction has 731 states and 2407 transitions. [2022-11-20 19:54:30,042 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) [2022-11-20 19:54:30,042 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 2407 transitions. [2022-11-20 19:54:30,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:54:30,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:54:30,045 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] [2022-11-20 19:54:30,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 19:54:30,046 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)] === [2022-11-20 19:54:30,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:54:30,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1854987411, now seen corresponding path program 8 times [2022-11-20 19:54:30,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:54:30,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571798194] [2022-11-20 19:54:30,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:54:30,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:54:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:54:31,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:54:31,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:54:31,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571798194] [2022-11-20 19:54:31,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571798194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:54:31,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:54:31,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 19:54:31,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831232245] [2022-11-20 19:54:31,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:54:31,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 19:54:31,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:54:31,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 19:54:31,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-20 19:54:31,595 INFO L87 Difference]: Start difference. First operand 731 states and 2407 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) [2022-11-20 19:54:33,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:54:33,617 INFO L93 Difference]: Finished difference Result 1950 states and 5755 transitions. [2022-11-20 19:54:33,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 19:54:33,617 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 [2022-11-20 19:54:33,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:54:33,625 INFO L225 Difference]: With dead ends: 1950 [2022-11-20 19:54:33,625 INFO L226 Difference]: Without dead ends: 1921 [2022-11-20 19:54:33,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=232, Invalid=524, Unknown=0, NotChecked=0, Total=756 [2022-11-20 19:54:33,628 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 391 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:54:33,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 0 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 19:54:33,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2022-11-20 19:54:33,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 767. [2022-11-20 19:54:33,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 766 states have (on average 3.2676240208877285) internal successors, (2503), 766 states have internal predecessors, (2503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:33,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 2503 transitions. [2022-11-20 19:54:33,670 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 2503 transitions. Word has length 36 [2022-11-20 19:54:33,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:54:33,670 INFO L495 AbstractCegarLoop]: Abstraction has 767 states and 2503 transitions. [2022-11-20 19:54:33,671 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) [2022-11-20 19:54:33,671 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 2503 transitions. [2022-11-20 19:54:33,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:54:33,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:54:33,674 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] [2022-11-20 19:54:33,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 19:54:33,674 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)] === [2022-11-20 19:54:33,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:54:33,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1479447269, now seen corresponding path program 9 times [2022-11-20 19:54:33,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:54:33,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670262066] [2022-11-20 19:54:33,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:54:33,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:54:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:54:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:54:35,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:54:35,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670262066] [2022-11-20 19:54:35,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670262066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:54:35,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:54:35,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 19:54:35,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470051286] [2022-11-20 19:54:35,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:54:35,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 19:54:35,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:54:35,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 19:54:35,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-20 19:54:35,085 INFO L87 Difference]: Start difference. First operand 767 states and 2503 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) [2022-11-20 19:54:37,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:54:37,052 INFO L93 Difference]: Finished difference Result 1975 states and 5801 transitions. [2022-11-20 19:54:37,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 19:54:37,053 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 [2022-11-20 19:54:37,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:54:37,060 INFO L225 Difference]: With dead ends: 1975 [2022-11-20 19:54:37,060 INFO L226 Difference]: Without dead ends: 1961 [2022-11-20 19:54:37,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=234, Invalid=522, Unknown=0, NotChecked=0, Total=756 [2022-11-20 19:54:37,061 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 401 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:54:37,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 0 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 19:54:37,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2022-11-20 19:54:37,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 743. [2022-11-20 19:54:37,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 742 states have (on average 3.284366576819407) internal successors, (2437), 742 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:37,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 2437 transitions. [2022-11-20 19:54:37,102 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 2437 transitions. Word has length 36 [2022-11-20 19:54:37,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:54:37,103 INFO L495 AbstractCegarLoop]: Abstraction has 743 states and 2437 transitions. [2022-11-20 19:54:37,103 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) [2022-11-20 19:54:37,103 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 2437 transitions. [2022-11-20 19:54:37,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:54:37,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:54:37,106 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] [2022-11-20 19:54:37,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 19:54:37,106 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)] === [2022-11-20 19:54:37,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:54:37,107 INFO L85 PathProgramCache]: Analyzing trace with hash -2022234707, now seen corresponding path program 10 times [2022-11-20 19:54:37,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:54:37,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450968097] [2022-11-20 19:54:37,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:54:37,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:54:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:54:38,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:54:38,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:54:38,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450968097] [2022-11-20 19:54:38,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450968097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:54:38,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:54:38,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:54:38,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367221028] [2022-11-20 19:54:38,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:54:38,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:54:38,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:54:38,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:54:38,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:54:38,413 INFO L87 Difference]: Start difference. First operand 743 states and 2437 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:40,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:54:40,397 INFO L93 Difference]: Finished difference Result 1912 states and 5634 transitions. [2022-11-20 19:54:40,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 19:54:40,398 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:54:40,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:54:40,405 INFO L225 Difference]: With dead ends: 1912 [2022-11-20 19:54:40,405 INFO L226 Difference]: Without dead ends: 1898 [2022-11-20 19:54:40,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2022-11-20 19:54:40,406 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 201 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:54:40,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 0 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1422 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 19:54:40,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2022-11-20 19:54:40,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 751. [2022-11-20 19:54:40,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 750 states have (on average 3.268) internal successors, (2451), 750 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:40,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 2451 transitions. [2022-11-20 19:54:40,446 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 2451 transitions. Word has length 36 [2022-11-20 19:54:40,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:54:40,446 INFO L495 AbstractCegarLoop]: Abstraction has 751 states and 2451 transitions. [2022-11-20 19:54:40,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:40,447 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 2451 transitions. [2022-11-20 19:54:40,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:54:40,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:54:40,449 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] [2022-11-20 19:54:40,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 19:54:40,450 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)] === [2022-11-20 19:54:40,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:54:40,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1196638427, now seen corresponding path program 11 times [2022-11-20 19:54:40,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:54:40,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457489344] [2022-11-20 19:54:40,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:54:40,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:54:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:54:41,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:54:41,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:54:41,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457489344] [2022-11-20 19:54:41,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457489344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:54:41,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:54:41,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:54:41,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110915798] [2022-11-20 19:54:41,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:54:41,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:54:41,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:54:41,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:54:41,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:54:41,664 INFO L87 Difference]: Start difference. First operand 751 states and 2451 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:43,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:54:43,342 INFO L93 Difference]: Finished difference Result 1959 states and 5808 transitions. [2022-11-20 19:54:43,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 19:54:43,343 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:54:43,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:54:43,350 INFO L225 Difference]: With dead ends: 1959 [2022-11-20 19:54:43,350 INFO L226 Difference]: Without dead ends: 1945 [2022-11-20 19:54:43,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2022-11-20 19:54:43,351 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 223 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:54:43,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 0 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1389 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 19:54:43,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2022-11-20 19:54:43,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 759. [2022-11-20 19:54:43,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 758 states have (on average 3.267810026385224) internal successors, (2477), 758 states have internal predecessors, (2477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:43,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 2477 transitions. [2022-11-20 19:54:43,387 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 2477 transitions. Word has length 36 [2022-11-20 19:54:43,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:54:43,388 INFO L495 AbstractCegarLoop]: Abstraction has 759 states and 2477 transitions. [2022-11-20 19:54:43,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:43,388 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 2477 transitions. [2022-11-20 19:54:43,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:54:43,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:54:43,391 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] [2022-11-20 19:54:43,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 19:54:43,391 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)] === [2022-11-20 19:54:43,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:54:43,392 INFO L85 PathProgramCache]: Analyzing trace with hash 603481601, now seen corresponding path program 12 times [2022-11-20 19:54:43,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:54:43,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154755406] [2022-11-20 19:54:43,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:54:43,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:54:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:54:44,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:54:44,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:54:44,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154755406] [2022-11-20 19:54:44,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154755406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:54:44,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:54:44,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:54:44,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256943715] [2022-11-20 19:54:44,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:54:44,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:54:44,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:54:44,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:54:44,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:54:44,871 INFO L87 Difference]: Start difference. First operand 759 states and 2477 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:46,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:54:46,589 INFO L93 Difference]: Finished difference Result 2049 states and 6061 transitions. [2022-11-20 19:54:46,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 19:54:46,589 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:54:46,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:54:46,597 INFO L225 Difference]: With dead ends: 2049 [2022-11-20 19:54:46,597 INFO L226 Difference]: Without dead ends: 2035 [2022-11-20 19:54:46,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2022-11-20 19:54:46,598 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 223 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:54:46,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 0 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 19:54:46,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2022-11-20 19:54:46,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 759. [2022-11-20 19:54:46,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 758 states have (on average 3.267810026385224) internal successors, (2477), 758 states have internal predecessors, (2477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:46,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 2477 transitions. [2022-11-20 19:54:46,637 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 2477 transitions. Word has length 36 [2022-11-20 19:54:46,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:54:46,638 INFO L495 AbstractCegarLoop]: Abstraction has 759 states and 2477 transitions. [2022-11-20 19:54:46,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:46,638 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 2477 transitions. [2022-11-20 19:54:46,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:54:46,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:54:46,641 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] [2022-11-20 19:54:46,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 19:54:46,641 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)] === [2022-11-20 19:54:46,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:54:46,642 INFO L85 PathProgramCache]: Analyzing trace with hash 905248773, now seen corresponding path program 13 times [2022-11-20 19:54:46,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:54:46,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505131330] [2022-11-20 19:54:46,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:54:46,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:54:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:54:47,797 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:54:47,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:54:47,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505131330] [2022-11-20 19:54:47,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505131330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:54:47,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:54:47,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:54:47,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629221273] [2022-11-20 19:54:47,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:54:47,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:54:47,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:54:47,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:54:47,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:54:47,799 INFO L87 Difference]: Start difference. First operand 759 states and 2477 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:49,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:54:49,603 INFO L93 Difference]: Finished difference Result 2029 states and 6017 transitions. [2022-11-20 19:54:49,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 19:54:49,603 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:54:49,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:54:49,611 INFO L225 Difference]: With dead ends: 2029 [2022-11-20 19:54:49,612 INFO L226 Difference]: Without dead ends: 2015 [2022-11-20 19:54:49,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2022-11-20 19:54:49,613 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 207 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1523 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:54:49,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 0 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1523 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 19:54:49,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2022-11-20 19:54:49,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 759. [2022-11-20 19:54:49,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 758 states have (on average 3.267810026385224) internal successors, (2477), 758 states have internal predecessors, (2477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:49,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 2477 transitions. [2022-11-20 19:54:49,653 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 2477 transitions. Word has length 36 [2022-11-20 19:54:49,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:54:49,654 INFO L495 AbstractCegarLoop]: Abstraction has 759 states and 2477 transitions. [2022-11-20 19:54:49,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:49,654 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 2477 transitions. [2022-11-20 19:54:49,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:54:49,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:54:49,657 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] [2022-11-20 19:54:49,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-20 19:54:49,658 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)] === [2022-11-20 19:54:49,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:54:49,658 INFO L85 PathProgramCache]: Analyzing trace with hash -121598533, now seen corresponding path program 14 times [2022-11-20 19:54:49,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:54:49,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108621557] [2022-11-20 19:54:49,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:54:49,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:54:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:54:51,162 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:54:51,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:54:51,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108621557] [2022-11-20 19:54:51,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108621557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:54:51,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:54:51,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 19:54:51,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461883967] [2022-11-20 19:54:51,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:54:51,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 19:54:51,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:54:51,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 19:54:51,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-20 19:54:51,166 INFO L87 Difference]: Start difference. First operand 759 states and 2477 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) [2022-11-20 19:54:52,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:54:52,621 INFO L93 Difference]: Finished difference Result 1417 states and 4250 transitions. [2022-11-20 19:54:52,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 19:54:52,622 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 [2022-11-20 19:54:52,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:54:52,625 INFO L225 Difference]: With dead ends: 1417 [2022-11-20 19:54:52,626 INFO L226 Difference]: Without dead ends: 1388 [2022-11-20 19:54:52,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=209, Invalid=493, Unknown=0, NotChecked=0, Total=702 [2022-11-20 19:54:52,627 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 296 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 19:54:52,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 0 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 19:54:52,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2022-11-20 19:54:52,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 803. [2022-11-20 19:54:52,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 3.229426433915212) internal successors, (2590), 802 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:52,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 2590 transitions. [2022-11-20 19:54:52,659 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 2590 transitions. Word has length 36 [2022-11-20 19:54:52,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:54:52,660 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 2590 transitions. [2022-11-20 19:54:52,660 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) [2022-11-20 19:54:52,660 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 2590 transitions. [2022-11-20 19:54:52,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:54:52,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:54:52,663 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] [2022-11-20 19:54:52,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-20 19:54:52,664 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)] === [2022-11-20 19:54:52,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:54:52,664 INFO L85 PathProgramCache]: Analyzing trace with hash 253941609, now seen corresponding path program 15 times [2022-11-20 19:54:52,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:54:52,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299222570] [2022-11-20 19:54:52,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:54:52,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:54:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:54:54,026 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:54:54,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:54:54,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299222570] [2022-11-20 19:54:54,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299222570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:54:54,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:54:54,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 19:54:54,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572505702] [2022-11-20 19:54:54,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:54:54,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 19:54:54,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:54:54,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 19:54:54,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-20 19:54:54,028 INFO L87 Difference]: Start difference. First operand 803 states and 2590 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) [2022-11-20 19:54:55,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:54:55,813 INFO L93 Difference]: Finished difference Result 1442 states and 4296 transitions. [2022-11-20 19:54:55,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 19:54:55,813 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 [2022-11-20 19:54:55,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:54:55,819 INFO L225 Difference]: With dead ends: 1442 [2022-11-20 19:54:55,819 INFO L226 Difference]: Without dead ends: 1428 [2022-11-20 19:54:55,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=211, Invalid=491, Unknown=0, NotChecked=0, Total=702 [2022-11-20 19:54:55,820 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 314 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 19:54:55,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 0 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 19:54:55,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2022-11-20 19:54:55,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 779. [2022-11-20 19:54:55,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 778 states have (on average 3.2442159383033418) internal successors, (2524), 778 states have internal predecessors, (2524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:55,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 2524 transitions. [2022-11-20 19:54:55,853 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 2524 transitions. Word has length 36 [2022-11-20 19:54:55,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:54:55,853 INFO L495 AbstractCegarLoop]: Abstraction has 779 states and 2524 transitions. [2022-11-20 19:54:55,853 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) [2022-11-20 19:54:55,854 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 2524 transitions. [2022-11-20 19:54:55,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:54:55,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:54:55,856 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] [2022-11-20 19:54:55,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-20 19:54:55,857 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)] === [2022-11-20 19:54:55,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:54:55,857 INFO L85 PathProgramCache]: Analyzing trace with hash -288845829, now seen corresponding path program 16 times [2022-11-20 19:54:55,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:54:55,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582971814] [2022-11-20 19:54:55,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:54:55,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:54:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:54:57,069 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:54:57,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:54:57,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582971814] [2022-11-20 19:54:57,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582971814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:54:57,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:54:57,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:54:57,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728859493] [2022-11-20 19:54:57,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:54:57,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:54:57,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:54:57,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:54:57,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:54:57,071 INFO L87 Difference]: Start difference. First operand 779 states and 2524 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:58,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:54:58,901 INFO L93 Difference]: Finished difference Result 1460 states and 4312 transitions. [2022-11-20 19:54:58,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 19:54:58,902 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:54:58,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:54:58,906 INFO L225 Difference]: With dead ends: 1460 [2022-11-20 19:54:58,907 INFO L226 Difference]: Without dead ends: 1446 [2022-11-20 19:54:58,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2022-11-20 19:54:58,908 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 194 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:54:58,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 0 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 19:54:58,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2022-11-20 19:54:58,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 767. [2022-11-20 19:54:58,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 766 states have (on average 3.255874673629243) internal successors, (2494), 766 states have internal predecessors, (2494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:58,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 2494 transitions. [2022-11-20 19:54:58,938 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 2494 transitions. Word has length 36 [2022-11-20 19:54:58,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:54:58,938 INFO L495 AbstractCegarLoop]: Abstraction has 767 states and 2494 transitions. [2022-11-20 19:54:58,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:58,939 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 2494 transitions. [2022-11-20 19:54:58,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:54:58,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:54:58,941 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] [2022-11-20 19:54:58,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-20 19:54:58,942 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)] === [2022-11-20 19:54:58,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:54:58,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1479646685, now seen corresponding path program 17 times [2022-11-20 19:54:58,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:54:58,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203457984] [2022-11-20 19:54:58,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:54:58,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:54:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:55:00,295 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:55:00,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:55:00,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203457984] [2022-11-20 19:55:00,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203457984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:55:00,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:55:00,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 19:55:00,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652554242] [2022-11-20 19:55:00,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:55:00,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 19:55:00,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:55:00,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 19:55:00,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:55:00,297 INFO L87 Difference]: Start difference. First operand 767 states and 2494 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) [2022-11-20 19:55:01,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:55:01,328 INFO L93 Difference]: Finished difference Result 965 states and 2882 transitions. [2022-11-20 19:55:01,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:55:01,328 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 [2022-11-20 19:55:01,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:55:01,332 INFO L225 Difference]: With dead ends: 965 [2022-11-20 19:55:01,332 INFO L226 Difference]: Without dead ends: 958 [2022-11-20 19:55:01,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2022-11-20 19:55:01,333 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 247 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:55:01,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 0 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:55:01,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2022-11-20 19:55:01,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 780. [2022-11-20 19:55:01,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 3.2362002567394095) internal successors, (2521), 779 states have internal predecessors, (2521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:55:01,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 2521 transitions. [2022-11-20 19:55:01,358 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 2521 transitions. Word has length 36 [2022-11-20 19:55:01,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:55:01,359 INFO L495 AbstractCegarLoop]: Abstraction has 780 states and 2521 transitions. [2022-11-20 19:55:01,359 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) [2022-11-20 19:55:01,359 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 2521 transitions. [2022-11-20 19:55:01,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:55:01,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:55:01,362 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] [2022-11-20 19:55:01,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-20 19:55:01,363 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)] === [2022-11-20 19:55:01,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:55:01,363 INFO L85 PathProgramCache]: Analyzing trace with hash 402586323, now seen corresponding path program 18 times [2022-11-20 19:55:01,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:55:01,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796854086] [2022-11-20 19:55:01,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:55:01,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:55:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:55:02,624 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:55:02,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:55:02,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796854086] [2022-11-20 19:55:02,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796854086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:55:02,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:55:02,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 19:55:02,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137677417] [2022-11-20 19:55:02,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:55:02,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 19:55:02,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:55:02,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 19:55:02,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:55:02,626 INFO L87 Difference]: Start difference. First operand 780 states and 2521 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) [2022-11-20 19:55:03,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:55:03,847 INFO L93 Difference]: Finished difference Result 1109 states and 3215 transitions. [2022-11-20 19:55:03,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:55:03,848 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 [2022-11-20 19:55:03,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:55:03,851 INFO L225 Difference]: With dead ends: 1109 [2022-11-20 19:55:03,851 INFO L226 Difference]: Without dead ends: 1102 [2022-11-20 19:55:03,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2022-11-20 19:55:03,852 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 273 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:55:03,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 0 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:55:03,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2022-11-20 19:55:03,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 790. [2022-11-20 19:55:03,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 789 states have (on average 3.2281368821292777) internal successors, (2547), 789 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:55:03,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 2547 transitions. [2022-11-20 19:55:03,886 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 2547 transitions. Word has length 36 [2022-11-20 19:55:03,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:55:03,887 INFO L495 AbstractCegarLoop]: Abstraction has 790 states and 2547 transitions. [2022-11-20 19:55:03,887 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) [2022-11-20 19:55:03,887 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 2547 transitions. [2022-11-20 19:55:03,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:55:03,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:55:03,891 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] [2022-11-20 19:55:03,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-20 19:55:03,892 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)] === [2022-11-20 19:55:03,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:55:03,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1992789003, now seen corresponding path program 19 times [2022-11-20 19:55:03,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:55:03,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499973296] [2022-11-20 19:55:03,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:55:03,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:55:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:55:05,160 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:55:05,160 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:55:05,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499973296] [2022-11-20 19:55:05,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499973296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:55:05,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:55:05,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 19:55:05,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848123778] [2022-11-20 19:55:05,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:55:05,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 19:55:05,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:55:05,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 19:55:05,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:55:05,162 INFO L87 Difference]: Start difference. First operand 790 states and 2547 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) [2022-11-20 19:55:06,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:55:06,330 INFO L93 Difference]: Finished difference Result 1109 states and 3233 transitions. [2022-11-20 19:55:06,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:55:06,331 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 [2022-11-20 19:55:06,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:55:06,333 INFO L225 Difference]: With dead ends: 1109 [2022-11-20 19:55:06,333 INFO L226 Difference]: Without dead ends: 1102 [2022-11-20 19:55:06,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2022-11-20 19:55:06,334 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 262 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 19:55:06,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 0 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 19:55:06,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2022-11-20 19:55:06,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 810. [2022-11-20 19:55:06,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 809 states have (on average 3.2249690976514214) internal successors, (2609), 809 states have internal predecessors, (2609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:55:06,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 2609 transitions. [2022-11-20 19:55:06,362 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 2609 transitions. Word has length 36 [2022-11-20 19:55:06,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:55:06,362 INFO L495 AbstractCegarLoop]: Abstraction has 810 states and 2609 transitions. [2022-11-20 19:55:06,362 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) [2022-11-20 19:55:06,363 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 2609 transitions. [2022-11-20 19:55:06,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:55:06,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:55:06,366 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] [2022-11-20 19:55:06,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-20 19:55:06,366 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)] === [2022-11-20 19:55:06,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:55:06,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1304275645, now seen corresponding path program 20 times [2022-11-20 19:55:06,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:55:06,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73017919] [2022-11-20 19:55:06,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:55:06,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:55:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:55:07,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:55:07,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:55:07,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73017919] [2022-11-20 19:55:07,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73017919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:55:07,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:55:07,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 19:55:07,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842854122] [2022-11-20 19:55:07,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:55:07,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 19:55:07,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:55:07,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 19:55:07,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:55:07,520 INFO L87 Difference]: Start difference. First operand 810 states and 2609 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) [2022-11-20 19:55:08,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:55:08,697 INFO L93 Difference]: Finished difference Result 1080 states and 3170 transitions. [2022-11-20 19:55:08,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:55:08,697 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 [2022-11-20 19:55:08,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:55:08,699 INFO L225 Difference]: With dead ends: 1080 [2022-11-20 19:55:08,699 INFO L226 Difference]: Without dead ends: 1066 [2022-11-20 19:55:08,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2022-11-20 19:55:08,700 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 270 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:55:08,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 0 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:55:08,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2022-11-20 19:55:08,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 775. [2022-11-20 19:55:08,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 774 states have (on average 3.24031007751938) internal successors, (2508), 774 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:55:08,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 2508 transitions. [2022-11-20 19:55:08,725 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 2508 transitions. Word has length 36 [2022-11-20 19:55:08,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:55:08,725 INFO L495 AbstractCegarLoop]: Abstraction has 775 states and 2508 transitions. [2022-11-20 19:55:08,725 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) [2022-11-20 19:55:08,726 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 2508 transitions. [2022-11-20 19:55:08,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:55:08,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:55:08,729 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] [2022-11-20 19:55:08,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-20 19:55:08,729 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)] === [2022-11-20 19:55:08,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:55:08,730 INFO L85 PathProgramCache]: Analyzing trace with hash -478827339, now seen corresponding path program 21 times [2022-11-20 19:55:08,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:55:08,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296486080] [2022-11-20 19:55:08,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:55:08,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:55:08,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:55:09,827 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:55:09,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:55:09,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296486080] [2022-11-20 19:55:09,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296486080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:55:09,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:55:09,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 19:55:09,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892966760] [2022-11-20 19:55:09,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:55:09,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 19:55:09,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:55:09,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 19:55:09,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:55:09,834 INFO L87 Difference]: Start difference. First operand 775 states and 2508 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) [2022-11-20 19:55:10,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:55:10,878 INFO L93 Difference]: Finished difference Result 1020 states and 3042 transitions. [2022-11-20 19:55:10,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:55:10,879 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 [2022-11-20 19:55:10,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:55:10,881 INFO L225 Difference]: With dead ends: 1020 [2022-11-20 19:55:10,882 INFO L226 Difference]: Without dead ends: 1013 [2022-11-20 19:55:10,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2022-11-20 19:55:10,883 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 228 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:55:10,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 0 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:55:10,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-11-20 19:55:10,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 781. [2022-11-20 19:55:10,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 780 states have (on average 3.23974358974359) internal successors, (2527), 780 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:55:10,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 2527 transitions. [2022-11-20 19:55:10,905 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 2527 transitions. Word has length 36 [2022-11-20 19:55:10,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:55:10,905 INFO L495 AbstractCegarLoop]: Abstraction has 781 states and 2527 transitions. [2022-11-20 19:55:10,905 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) [2022-11-20 19:55:10,905 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 2527 transitions. [2022-11-20 19:55:10,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:55:10,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:55:10,909 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] [2022-11-20 19:55:10,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-20 19:55:10,910 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)] === [2022-11-20 19:55:10,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:55:10,910 INFO L85 PathProgramCache]: Analyzing trace with hash 775867983, now seen corresponding path program 22 times [2022-11-20 19:55:10,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:55:10,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122097568] [2022-11-20 19:55:10,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:55:10,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:55:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:55:12,752 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:55:12,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:55:12,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122097568] [2022-11-20 19:55:12,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122097568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:55:12,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:55:12,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-20 19:55:12,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858318681] [2022-11-20 19:55:12,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:55:12,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 19:55:12,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:55:12,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 19:55:12,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-11-20 19:55:12,754 INFO L87 Difference]: Start difference. First operand 781 states and 2527 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:55:17,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:55:17,993 INFO L93 Difference]: Finished difference Result 1538 states and 4305 transitions. [2022-11-20 19:55:17,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 19:55:17,994 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:55:17,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:55:17,996 INFO L225 Difference]: With dead ends: 1538 [2022-11-20 19:55:17,997 INFO L226 Difference]: Without dead ends: 1531 [2022-11-20 19:55:17,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=648, Invalid=1422, Unknown=0, NotChecked=0, Total=2070 [2022-11-20 19:55:17,998 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 393 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2016 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:55:17,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 0 Invalid, 2040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2016 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-20 19:55:18,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2022-11-20 19:55:18,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 789. [2022-11-20 19:55:18,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 788 states have (on average 3.239847715736041) internal successors, (2553), 788 states have internal predecessors, (2553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:55:18,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 2553 transitions. [2022-11-20 19:55:18,034 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 2553 transitions. Word has length 36 [2022-11-20 19:55:18,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:55:18,034 INFO L495 AbstractCegarLoop]: Abstraction has 789 states and 2553 transitions. [2022-11-20 19:55:18,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:55:18,035 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 2553 transitions. [2022-11-20 19:55:18,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:55:18,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:55:18,037 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] [2022-11-20 19:55:18,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-20 19:55:18,038 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)] === [2022-11-20 19:55:18,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:55:18,042 INFO L85 PathProgramCache]: Analyzing trace with hash 182711157, now seen corresponding path program 23 times [2022-11-20 19:55:18,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:55:18,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142482505] [2022-11-20 19:55:18,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:55:18,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:55:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:55:19,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:55:19,234 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:55:19,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142482505] [2022-11-20 19:55:19,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142482505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:55:19,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:55:19,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 19:55:19,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153795033] [2022-11-20 19:55:19,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:55:19,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 19:55:19,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:55:19,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 19:55:19,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:55:19,236 INFO L87 Difference]: Start difference. First operand 789 states and 2553 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) [2022-11-20 19:55:20,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:55:20,480 INFO L93 Difference]: Finished difference Result 1078 states and 3249 transitions. [2022-11-20 19:55:20,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:55:20,481 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 [2022-11-20 19:55:20,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:55:20,483 INFO L225 Difference]: With dead ends: 1078 [2022-11-20 19:55:20,483 INFO L226 Difference]: Without dead ends: 1071 [2022-11-20 19:55:20,483 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 [2022-11-20 19:55:20,484 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 282 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:55:20,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 0 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:55:20,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2022-11-20 19:55:20,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 789. [2022-11-20 19:55:20,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 788 states have (on average 3.239847715736041) internal successors, (2553), 788 states have internal predecessors, (2553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:55:20,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 2553 transitions. [2022-11-20 19:55:20,504 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 2553 transitions. Word has length 36 [2022-11-20 19:55:20,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:55:20,504 INFO L495 AbstractCegarLoop]: Abstraction has 789 states and 2553 transitions. [2022-11-20 19:55:20,504 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) [2022-11-20 19:55:20,505 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 2553 transitions. [2022-11-20 19:55:20,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:55:20,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:55:20,507 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] [2022-11-20 19:55:20,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-20 19:55:20,507 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)] === [2022-11-20 19:55:20,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:55:20,508 INFO L85 PathProgramCache]: Analyzing trace with hash 484478329, now seen corresponding path program 24 times [2022-11-20 19:55:20,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:55:20,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080027028] [2022-11-20 19:55:20,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:55:20,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:55:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:55:21,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:55:21,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:55:21,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080027028] [2022-11-20 19:55:21,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080027028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:55:21,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:55:21,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 19:55:21,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582631046] [2022-11-20 19:55:21,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:55:21,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 19:55:21,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:55:21,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 19:55:21,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:55:21,651 INFO L87 Difference]: Start difference. First operand 789 states and 2553 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) [2022-11-20 19:55:22,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:55:22,779 INFO L93 Difference]: Finished difference Result 1064 states and 3218 transitions. [2022-11-20 19:55:22,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:55:22,780 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 [2022-11-20 19:55:22,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:55:22,782 INFO L225 Difference]: With dead ends: 1064 [2022-11-20 19:55:22,782 INFO L226 Difference]: Without dead ends: 1057 [2022-11-20 19:55:22,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2022-11-20 19:55:22,783 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 229 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 19:55:22,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 0 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 19:55:22,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2022-11-20 19:55:22,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 781. [2022-11-20 19:55:22,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 780 states have (on average 3.23974358974359) internal successors, (2527), 780 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:55:22,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 2527 transitions. [2022-11-20 19:55:22,805 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 2527 transitions. Word has length 36 [2022-11-20 19:55:22,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:55:22,806 INFO L495 AbstractCegarLoop]: Abstraction has 781 states and 2527 transitions. [2022-11-20 19:55:22,806 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) [2022-11-20 19:55:22,806 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 2527 transitions. [2022-11-20 19:55:22,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:55:22,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:55:22,808 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] [2022-11-20 19:55:22,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-20 19:55:22,809 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)] === [2022-11-20 19:55:22,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:55:22,809 INFO L85 PathProgramCache]: Analyzing trace with hash -672022747, now seen corresponding path program 25 times [2022-11-20 19:55:22,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:55:22,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512018283] [2022-11-20 19:55:22,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:55:22,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:55:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:55:23,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:55:23,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:55:23,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512018283] [2022-11-20 19:55:23,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512018283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:55:23,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:55:23,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 19:55:23,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138623544] [2022-11-20 19:55:23,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:55:23,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 19:55:23,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:55:23,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 19:55:23,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:55:23,940 INFO L87 Difference]: Start difference. First operand 781 states and 2527 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) [2022-11-20 19:55:25,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:55:25,059 INFO L93 Difference]: Finished difference Result 1364 states and 4108 transitions. [2022-11-20 19:55:25,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:55:25,059 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 [2022-11-20 19:55:25,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:55:25,062 INFO L225 Difference]: With dead ends: 1364 [2022-11-20 19:55:25,062 INFO L226 Difference]: Without dead ends: 1357 [2022-11-20 19:55:25,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2022-11-20 19:55:25,063 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 272 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:55:25,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 0 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:55:25,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2022-11-20 19:55:25,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 795. [2022-11-20 19:55:25,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 794 states have (on average 3.2468513853904284) internal successors, (2578), 794 states have internal predecessors, (2578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:55:25,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 2578 transitions. [2022-11-20 19:55:25,099 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 2578 transitions. Word has length 36 [2022-11-20 19:55:25,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:55:25,100 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 2578 transitions. [2022-11-20 19:55:25,100 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) [2022-11-20 19:55:25,100 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 2578 transitions. [2022-11-20 19:55:25,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:55:25,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:55:25,103 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] [2022-11-20 19:55:25,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-20 19:55:25,103 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)] === [2022-11-20 19:55:25,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:55:25,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1265179573, now seen corresponding path program 26 times [2022-11-20 19:55:25,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:55:25,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936846123] [2022-11-20 19:55:25,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:55:25,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:55:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:55:26,223 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:55:26,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:55:26,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936846123] [2022-11-20 19:55:26,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936846123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:55:26,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:55:26,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 19:55:26,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244293216] [2022-11-20 19:55:26,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:55:26,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 19:55:26,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:55:26,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 19:55:26,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:55:26,225 INFO L87 Difference]: Start difference. First operand 795 states and 2578 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) [2022-11-20 19:55:27,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:55:27,247 INFO L93 Difference]: Finished difference Result 1438 states and 4371 transitions. [2022-11-20 19:55:27,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:55:27,247 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 [2022-11-20 19:55:27,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:55:27,250 INFO L225 Difference]: With dead ends: 1438 [2022-11-20 19:55:27,250 INFO L226 Difference]: Without dead ends: 1431 [2022-11-20 19:55:27,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2022-11-20 19:55:27,250 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 355 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:55:27,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 0 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:55:27,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2022-11-20 19:55:27,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 795. [2022-11-20 19:55:27,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 794 states have (on average 3.2468513853904284) internal successors, (2578), 794 states have internal predecessors, (2578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:55:27,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 2578 transitions. [2022-11-20 19:55:27,271 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 2578 transitions. Word has length 36 [2022-11-20 19:55:27,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:55:27,272 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 2578 transitions. [2022-11-20 19:55:27,272 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) [2022-11-20 19:55:27,272 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 2578 transitions. [2022-11-20 19:55:27,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:55:27,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:55:27,274 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] [2022-11-20 19:55:27,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-20 19:55:27,275 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)] === [2022-11-20 19:55:27,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:55:27,275 INFO L85 PathProgramCache]: Analyzing trace with hash -963412401, now seen corresponding path program 27 times [2022-11-20 19:55:27,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:55:27,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170451952] [2022-11-20 19:55:27,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:55:27,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:55:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:55:28,467 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 19:55:28,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:55:28,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170451952] [2022-11-20 19:55:28,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170451952] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:55:28,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756690877] [2022-11-20 19:55:28,468 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 19:55:28,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:55:28,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:55:28,474 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:55:28,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 19:55:28,759 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 19:55:28,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 19:55:28,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-20 19:55:28,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:55:28,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 73 [2022-11-20 19:55:29,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:55:29,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:55:29,406 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 19:55:29,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 64 [2022-11-20 19:55:29,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:55:29,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:55:29,634 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 19:55:29,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 49 [2022-11-20 19:55:34,053 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 19:55:34,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 336 treesize of output 1754 [2022-11-20 19:58:26,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:58:26,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:58:26,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756690877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:58:26,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 19:58:26,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [12] total 28 [2022-11-20 19:58:26,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110931729] [2022-11-20 19:58:26,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:58:26,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 19:58:26,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:58:26,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 19:58:26,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=789, Unknown=0, NotChecked=0, Total=870 [2022-11-20 19:58:26,506 INFO L87 Difference]: Start difference. First operand 795 states and 2578 transitions. Second operand has 19 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:58:35,602 WARN L233 SmtUtils]: Spent 7.26s on a formula simplification. DAG size of input: 109 DAG size of output: 106 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:58:36,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:58:36,330 INFO L93 Difference]: Finished difference Result 1098 states and 3334 transitions. [2022-11-20 19:58:36,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 19:58:36,331 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:58:36,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:58:36,333 INFO L225 Difference]: With dead ends: 1098 [2022-11-20 19:58:36,333 INFO L226 Difference]: Without dead ends: 1091 [2022-11-20 19:58:36,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=294, Invalid=1428, Unknown=0, NotChecked=0, Total=1722 [2022-11-20 19:58:36,334 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 333 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 283 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 19:58:36,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 0 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 690 Invalid, 0 Unknown, 283 Unchecked, 0.9s Time] [2022-11-20 19:58:36,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-11-20 19:58:36,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 800. [2022-11-20 19:58:36,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 799 states have (on average 3.254067584480601) internal successors, (2600), 799 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:58:36,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 2600 transitions. [2022-11-20 19:58:36,353 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 2600 transitions. Word has length 36 [2022-11-20 19:58:36,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:58:36,353 INFO L495 AbstractCegarLoop]: Abstraction has 800 states and 2600 transitions. [2022-11-20 19:58:36,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:58:36,353 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 2600 transitions. [2022-11-20 19:58:36,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:58:36,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:58:36,356 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] [2022-11-20 19:58:36,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 19:58:36,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:58:36,557 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)] === [2022-11-20 19:58:36,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:58:36,557 INFO L85 PathProgramCache]: Analyzing trace with hash -712849575, now seen corresponding path program 28 times [2022-11-20 19:58:36,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:58:36,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774031465] [2022-11-20 19:58:36,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:58:36,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:58:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:58:37,584 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:58:37,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:58:37,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774031465] [2022-11-20 19:58:37,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774031465] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:58:37,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:58:37,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 19:58:37,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226416444] [2022-11-20 19:58:37,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:58:37,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 19:58:37,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:58:37,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 19:58:37,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:58:37,588 INFO L87 Difference]: Start difference. First operand 800 states and 2600 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) [2022-11-20 19:58:38,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:58:38,521 INFO L93 Difference]: Finished difference Result 1335 states and 3991 transitions. [2022-11-20 19:58:38,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:58:38,521 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 [2022-11-20 19:58:38,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:58:38,524 INFO L225 Difference]: With dead ends: 1335 [2022-11-20 19:58:38,525 INFO L226 Difference]: Without dead ends: 1328 [2022-11-20 19:58:38,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2022-11-20 19:58:38,527 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 279 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:58:38,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 0 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:58:38,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2022-11-20 19:58:38,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 810. [2022-11-20 19:58:38,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 809 states have (on average 3.245982694684796) internal successors, (2626), 809 states have internal predecessors, (2626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:58:38,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 2626 transitions. [2022-11-20 19:58:38,556 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 2626 transitions. Word has length 36 [2022-11-20 19:58:38,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:58:38,557 INFO L495 AbstractCegarLoop]: Abstraction has 810 states and 2626 transitions. [2022-11-20 19:58:38,557 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) [2022-11-20 19:58:38,558 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 2626 transitions. [2022-11-20 19:58:38,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:58:38,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:58:38,560 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] [2022-11-20 19:58:38,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-20 19:58:38,560 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)] === [2022-11-20 19:58:38,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:58:38,561 INFO L85 PathProgramCache]: Analyzing trace with hash -701969013, now seen corresponding path program 29 times [2022-11-20 19:58:38,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:58:38,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773829565] [2022-11-20 19:58:38,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:58:38,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:58:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:58:39,625 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:58:39,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:58:39,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773829565] [2022-11-20 19:58:39,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773829565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:58:39,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:58:39,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 19:58:39,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540928721] [2022-11-20 19:58:39,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:58:39,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 19:58:39,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:58:39,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 19:58:39,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:58:39,627 INFO L87 Difference]: Start difference. First operand 810 states and 2626 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) [2022-11-20 19:58:40,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:58:40,908 INFO L93 Difference]: Finished difference Result 1373 states and 4108 transitions. [2022-11-20 19:58:40,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:58:40,908 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 [2022-11-20 19:58:40,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:58:40,911 INFO L225 Difference]: With dead ends: 1373 [2022-11-20 19:58:40,911 INFO L226 Difference]: Without dead ends: 1366 [2022-11-20 19:58:40,912 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 [2022-11-20 19:58:40,912 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 318 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:58:40,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 0 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:58:40,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2022-11-20 19:58:40,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 830. [2022-11-20 19:58:40,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 829 states have (on average 3.2424607961399277) internal successors, (2688), 829 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:58:40,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 2688 transitions. [2022-11-20 19:58:40,932 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 2688 transitions. Word has length 36 [2022-11-20 19:58:40,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:58:40,933 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 2688 transitions. [2022-11-20 19:58:40,933 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) [2022-11-20 19:58:40,933 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 2688 transitions. [2022-11-20 19:58:40,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:58:40,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:58:40,935 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] [2022-11-20 19:58:40,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-20 19:58:40,935 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)] === [2022-11-20 19:58:40,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:58:40,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1390482371, now seen corresponding path program 30 times [2022-11-20 19:58:40,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:58:40,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000831753] [2022-11-20 19:58:40,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:58:40,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:58:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:58:41,784 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:58:41,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:58:41,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000831753] [2022-11-20 19:58:41,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000831753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:58:41,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:58:41,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 19:58:41,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787524549] [2022-11-20 19:58:41,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:58:41,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 19:58:41,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:58:41,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 19:58:41,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:58:41,787 INFO L87 Difference]: Start difference. First operand 830 states and 2688 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) [2022-11-20 19:58:42,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:58:42,868 INFO L93 Difference]: Finished difference Result 1344 states and 4045 transitions. [2022-11-20 19:58:42,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:58:42,869 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 [2022-11-20 19:58:42,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:58:42,872 INFO L225 Difference]: With dead ends: 1344 [2022-11-20 19:58:42,872 INFO L226 Difference]: Without dead ends: 1330 [2022-11-20 19:58:42,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2022-11-20 19:58:42,873 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 335 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:58:42,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 0 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:58:42,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2022-11-20 19:58:42,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 800. [2022-11-20 19:58:42,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 799 states have (on average 3.254067584480601) internal successors, (2600), 799 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:58:42,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 2600 transitions. [2022-11-20 19:58:42,898 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 2600 transitions. Word has length 36 [2022-11-20 19:58:42,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:58:42,898 INFO L495 AbstractCegarLoop]: Abstraction has 800 states and 2600 transitions. [2022-11-20 19:58:42,899 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) [2022-11-20 19:58:42,899 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 2600 transitions. [2022-11-20 19:58:42,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:58:42,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:58:42,900 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] [2022-11-20 19:58:42,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-20 19:58:42,901 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)] === [2022-11-20 19:58:42,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:58:42,901 INFO L85 PathProgramCache]: Analyzing trace with hash -724647401, now seen corresponding path program 31 times [2022-11-20 19:58:42,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:58:42,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122283603] [2022-11-20 19:58:42,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:58:42,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:58:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:58:43,922 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:58:43,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:58:43,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122283603] [2022-11-20 19:58:43,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122283603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:58:43,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:58:43,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 19:58:43,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762388533] [2022-11-20 19:58:43,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:58:43,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 19:58:43,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:58:43,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 19:58:43,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:58:43,924 INFO L87 Difference]: Start difference. First operand 800 states and 2600 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) [2022-11-20 19:58:45,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:58:45,130 INFO L93 Difference]: Finished difference Result 1536 states and 4799 transitions. [2022-11-20 19:58:45,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:58:45,131 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 [2022-11-20 19:58:45,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:58:45,133 INFO L225 Difference]: With dead ends: 1536 [2022-11-20 19:58:45,134 INFO L226 Difference]: Without dead ends: 1529 [2022-11-20 19:58:45,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2022-11-20 19:58:45,134 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 318 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 19:58:45,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 0 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 19:58:45,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2022-11-20 19:58:45,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 842. [2022-11-20 19:58:45,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 3.3067776456599285) internal successors, (2781), 841 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:58:45,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 2781 transitions. [2022-11-20 19:58:45,161 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 2781 transitions. Word has length 36 [2022-11-20 19:58:45,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:58:45,161 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 2781 transitions. [2022-11-20 19:58:45,161 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) [2022-11-20 19:58:45,161 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 2781 transitions. [2022-11-20 19:58:45,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:58:45,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:58:45,164 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] [2022-11-20 19:58:45,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-20 19:58:45,164 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)] === [2022-11-20 19:58:45,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:58:45,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1604667743, now seen corresponding path program 32 times [2022-11-20 19:58:45,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:58:45,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119261094] [2022-11-20 19:58:45,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:58:45,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:58:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:58:46,092 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:58:46,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:58:46,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119261094] [2022-11-20 19:58:46,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119261094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:58:46,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:58:46,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 19:58:46,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858649128] [2022-11-20 19:58:46,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:58:46,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 19:58:46,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:58:46,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 19:58:46,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:58:46,094 INFO L87 Difference]: Start difference. First operand 842 states and 2781 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) [2022-11-20 19:58:47,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:58:47,414 INFO L93 Difference]: Finished difference Result 1521 states and 4699 transitions. [2022-11-20 19:58:47,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:58:47,414 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 [2022-11-20 19:58:47,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:58:47,417 INFO L225 Difference]: With dead ends: 1521 [2022-11-20 19:58:47,417 INFO L226 Difference]: Without dead ends: 1514 [2022-11-20 19:58:47,418 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 [2022-11-20 19:58:47,418 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 326 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:58:47,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 0 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:58:47,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2022-11-20 19:58:47,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 862. [2022-11-20 19:58:47,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 3.301974448315912) internal successors, (2843), 861 states have internal predecessors, (2843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:58:47,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 2843 transitions. [2022-11-20 19:58:47,443 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 2843 transitions. Word has length 36 [2022-11-20 19:58:47,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:58:47,443 INFO L495 AbstractCegarLoop]: Abstraction has 862 states and 2843 transitions. [2022-11-20 19:58:47,443 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) [2022-11-20 19:58:47,444 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 2843 transitions. [2022-11-20 19:58:47,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:58:47,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:58:47,446 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] [2022-11-20 19:58:47,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-20 19:58:47,447 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)] === [2022-11-20 19:58:47,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:58:47,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1696492503, now seen corresponding path program 33 times [2022-11-20 19:58:47,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:58:47,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89849727] [2022-11-20 19:58:47,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:58:47,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:58:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:58:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:58:48,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:58:48,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89849727] [2022-11-20 19:58:48,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89849727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:58:48,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:58:48,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 19:58:48,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216963271] [2022-11-20 19:58:48,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:58:48,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 19:58:48,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:58:48,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 19:58:48,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:58:48,337 INFO L87 Difference]: Start difference. First operand 862 states and 2843 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) [2022-11-20 19:58:49,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:58:49,200 INFO L93 Difference]: Finished difference Result 1492 states and 4636 transitions. [2022-11-20 19:58:49,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:58:49,201 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 [2022-11-20 19:58:49,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:58:49,204 INFO L225 Difference]: With dead ends: 1492 [2022-11-20 19:58:49,204 INFO L226 Difference]: Without dead ends: 1478 [2022-11-20 19:58:49,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2022-11-20 19:58:49,205 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 320 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:58:49,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 0 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:58:49,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2022-11-20 19:58:49,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 842. [2022-11-20 19:58:49,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 3.3067776456599285) internal successors, (2781), 841 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:58:49,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 2781 transitions. [2022-11-20 19:58:49,225 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 2781 transitions. Word has length 36 [2022-11-20 19:58:49,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:58:49,225 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 2781 transitions. [2022-11-20 19:58:49,225 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) [2022-11-20 19:58:49,225 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 2781 transitions. [2022-11-20 19:58:49,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:58:49,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:58:49,228 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] [2022-11-20 19:58:49,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-20 19:58:49,228 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)] === [2022-11-20 19:58:49,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:58:49,229 INFO L85 PathProgramCache]: Analyzing trace with hash 537710117, now seen corresponding path program 34 times [2022-11-20 19:58:49,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:58:49,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028189330] [2022-11-20 19:58:49,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:58:49,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:58:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:58:50,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:58:50,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:58:50,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028189330] [2022-11-20 19:58:50,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028189330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:58:50,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:58:50,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 19:58:50,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833893457] [2022-11-20 19:58:50,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:58:50,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 19:58:50,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:58:50,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 19:58:50,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:58:50,266 INFO L87 Difference]: Start difference. First operand 842 states and 2781 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) [2022-11-20 19:58:51,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:58:51,355 INFO L93 Difference]: Finished difference Result 1452 states and 4527 transitions. [2022-11-20 19:58:51,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:58:51,355 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 [2022-11-20 19:58:51,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:58:51,358 INFO L225 Difference]: With dead ends: 1452 [2022-11-20 19:58:51,358 INFO L226 Difference]: Without dead ends: 1445 [2022-11-20 19:58:51,358 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 [2022-11-20 19:58:51,358 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 270 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:58:51,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 0 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:58:51,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2022-11-20 19:58:51,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 851. [2022-11-20 19:58:51,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 850 states have (on average 3.303529411764706) internal successors, (2808), 850 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:58:51,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 2808 transitions. [2022-11-20 19:58:51,377 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 2808 transitions. Word has length 36 [2022-11-20 19:58:51,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:58:51,377 INFO L495 AbstractCegarLoop]: Abstraction has 851 states and 2808 transitions. [2022-11-20 19:58:51,378 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) [2022-11-20 19:58:51,378 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 2808 transitions. [2022-11-20 19:58:51,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:58:51,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:58:51,379 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] [2022-11-20 19:58:51,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-20 19:58:51,379 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)] === [2022-11-20 19:58:51,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:58:51,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1825435559, now seen corresponding path program 35 times [2022-11-20 19:58:51,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:58:51,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953748898] [2022-11-20 19:58:51,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:58:51,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:58:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:58:52,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:58:52,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:58:52,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953748898] [2022-11-20 19:58:52,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953748898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:58:52,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:58:52,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 19:58:52,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365559952] [2022-11-20 19:58:52,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:58:52,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 19:58:52,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:58:52,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 19:58:52,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:58:52,242 INFO L87 Difference]: Start difference. First operand 851 states and 2808 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) [2022-11-20 19:58:53,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:58:53,206 INFO L93 Difference]: Finished difference Result 1445 states and 4512 transitions. [2022-11-20 19:58:53,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:58:53,206 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 [2022-11-20 19:58:53,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:58:53,209 INFO L225 Difference]: With dead ends: 1445 [2022-11-20 19:58:53,209 INFO L226 Difference]: Without dead ends: 1431 [2022-11-20 19:58:53,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2022-11-20 19:58:53,210 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 324 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:58:53,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 0 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:58:53,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2022-11-20 19:58:53,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 832. [2022-11-20 19:58:53,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 831 states have (on average 3.296028880866426) internal successors, (2739), 831 states have internal predecessors, (2739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:58:53,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 2739 transitions. [2022-11-20 19:58:53,246 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 2739 transitions. Word has length 36 [2022-11-20 19:58:53,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:58:53,247 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 2739 transitions. [2022-11-20 19:58:53,247 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) [2022-11-20 19:58:53,247 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 2739 transitions. [2022-11-20 19:58:53,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:58:53,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:58:53,249 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] [2022-11-20 19:58:53,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-20 19:58:53,250 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)] === [2022-11-20 19:58:53,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:58:53,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1253376553, now seen corresponding path program 36 times [2022-11-20 19:58:53,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:58:53,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058060806] [2022-11-20 19:58:53,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:58:53,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:58:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:58:54,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:58:54,052 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:58:54,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058060806] [2022-11-20 19:58:54,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058060806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:58:54,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:58:54,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 19:58:54,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524132142] [2022-11-20 19:58:54,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:58:54,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 19:58:54,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:58:54,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 19:58:54,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:58:54,053 INFO L87 Difference]: Start difference. First operand 832 states and 2739 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) [2022-11-20 19:58:55,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:58:55,134 INFO L93 Difference]: Finished difference Result 1373 states and 4185 transitions. [2022-11-20 19:58:55,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:58:55,135 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 [2022-11-20 19:58:55,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:58:55,137 INFO L225 Difference]: With dead ends: 1373 [2022-11-20 19:58:55,137 INFO L226 Difference]: Without dead ends: 1366 [2022-11-20 19:58:55,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2022-11-20 19:58:55,138 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 297 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:58:55,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 0 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:58:55,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2022-11-20 19:58:55,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 799. [2022-11-20 19:58:55,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 798 states have (on average 3.274436090225564) internal successors, (2613), 798 states have internal predecessors, (2613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:58:55,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 2613 transitions. [2022-11-20 19:58:55,155 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 2613 transitions. Word has length 36 [2022-11-20 19:58:55,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:58:55,155 INFO L495 AbstractCegarLoop]: Abstraction has 799 states and 2613 transitions. [2022-11-20 19:58:55,155 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) [2022-11-20 19:58:55,155 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 2613 transitions. [2022-11-20 19:58:55,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:58:55,156 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:58:55,156 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] [2022-11-20 19:58:55,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-20 19:58:55,157 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)] === [2022-11-20 19:58:55,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:58:55,157 INFO L85 PathProgramCache]: Analyzing trace with hash 312581693, now seen corresponding path program 37 times [2022-11-20 19:58:55,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:58:55,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857860527] [2022-11-20 19:58:55,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:58:55,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:58:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:58:56,174 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:58:56,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:58:56,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857860527] [2022-11-20 19:58:56,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857860527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:58:56,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:58:56,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 19:58:56,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414897841] [2022-11-20 19:58:56,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:58:56,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 19:58:56,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:58:56,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 19:58:56,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:58:56,176 INFO L87 Difference]: Start difference. First operand 799 states and 2613 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) [2022-11-20 19:58:57,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:58:57,381 INFO L93 Difference]: Finished difference Result 1486 states and 4581 transitions. [2022-11-20 19:58:57,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:58:57,382 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 [2022-11-20 19:58:57,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:58:57,385 INFO L225 Difference]: With dead ends: 1486 [2022-11-20 19:58:57,385 INFO L226 Difference]: Without dead ends: 1479 [2022-11-20 19:58:57,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2022-11-20 19:58:57,386 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 288 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:58:57,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 0 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:58:57,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2022-11-20 19:58:57,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 694. [2022-11-20 19:58:57,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 693 states have (on average 3.093795093795094) internal successors, (2144), 693 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:58:57,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 2144 transitions. [2022-11-20 19:58:57,403 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 2144 transitions. Word has length 36 [2022-11-20 19:58:57,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:58:57,403 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 2144 transitions. [2022-11-20 19:58:57,404 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) [2022-11-20 19:58:57,404 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 2144 transitions. [2022-11-20 19:58:57,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:58:57,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:58:57,406 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] [2022-11-20 19:58:57,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-20 19:58:57,406 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)] === [2022-11-20 19:58:57,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:58:57,407 INFO L85 PathProgramCache]: Analyzing trace with hash -407908483, now seen corresponding path program 7 times [2022-11-20 19:58:57,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:58:57,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368053298] [2022-11-20 19:58:57,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:58:57,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:58:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:58:57,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:58:57,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:58:57,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368053298] [2022-11-20 19:58:57,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368053298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:58:57,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:58:57,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 19:58:57,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846273903] [2022-11-20 19:58:57,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:58:57,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 19:58:57,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:58:57,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 19:58:57,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 19:58:57,672 INFO L87 Difference]: Start difference. First operand 694 states and 2144 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:58:57,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:58:57,919 INFO L93 Difference]: Finished difference Result 939 states and 2866 transitions. [2022-11-20 19:58:57,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 19:58:57,920 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:58:57,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:58:57,921 INFO L225 Difference]: With dead ends: 939 [2022-11-20 19:58:57,922 INFO L226 Difference]: Without dead ends: 939 [2022-11-20 19:58:57,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-20 19:58:57,923 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 136 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:58:57,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 0 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 19:58:57,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2022-11-20 19:58:57,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 694. [2022-11-20 19:58:57,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 693 states have (on average 3.092352092352092) internal successors, (2143), 693 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:58:57,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 2143 transitions. [2022-11-20 19:58:57,936 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 2143 transitions. Word has length 36 [2022-11-20 19:58:57,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:58:57,936 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 2143 transitions. [2022-11-20 19:58:57,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:58:57,937 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 2143 transitions. [2022-11-20 19:58:57,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:58:57,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:58:57,939 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] [2022-11-20 19:58:57,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-20 19:58:57,939 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)] === [2022-11-20 19:58:57,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:58:57,939 INFO L85 PathProgramCache]: Analyzing trace with hash -683981197, now seen corresponding path program 8 times [2022-11-20 19:58:57,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:58:57,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320779147] [2022-11-20 19:58:57,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:58:57,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:58:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:58:58,371 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:58:58,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:58:58,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320779147] [2022-11-20 19:58:58,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320779147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:58:58,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:58:58,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 19:58:58,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398312698] [2022-11-20 19:58:58,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:58:58,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 19:58:58,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:58:58,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 19:58:58,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 19:58:58,373 INFO L87 Difference]: Start difference. First operand 694 states and 2143 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) [2022-11-20 19:58:58,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:58:58,650 INFO L93 Difference]: Finished difference Result 750 states and 2252 transitions. [2022-11-20 19:58:58,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 19:58:58,650 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 [2022-11-20 19:58:58,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:58:58,652 INFO L225 Difference]: With dead ends: 750 [2022-11-20 19:58:58,652 INFO L226 Difference]: Without dead ends: 750 [2022-11-20 19:58:58,652 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 [2022-11-20 19:58:58,652 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 156 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:58:58,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 0 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 19:58:58,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-11-20 19:58:58,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 663. [2022-11-20 19:58:58,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 662 states have (on average 3.122356495468278) internal successors, (2067), 662 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:58:58,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 2067 transitions. [2022-11-20 19:58:58,662 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 2067 transitions. Word has length 36 [2022-11-20 19:58:58,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:58:58,663 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 2067 transitions. [2022-11-20 19:58:58,663 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) [2022-11-20 19:58:58,663 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 2067 transitions. [2022-11-20 19:58:58,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:58:58,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:58:58,665 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] [2022-11-20 19:58:58,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-20 19:58:58,665 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)] === [2022-11-20 19:58:58,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:58:58,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1485715637, now seen corresponding path program 9 times [2022-11-20 19:58:58,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:58:58,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12953122] [2022-11-20 19:58:58,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:58:58,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:58:58,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:58:58,986 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:58:58,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:58:58,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12953122] [2022-11-20 19:58:58,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12953122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:58:58,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:58:58,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 19:58:58,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596202974] [2022-11-20 19:58:58,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:58:58,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 19:58:58,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:58:58,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 19:58:58,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 19:58:58,988 INFO L87 Difference]: Start difference. First operand 663 states and 2067 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:58:59,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:58:59,241 INFO L93 Difference]: Finished difference Result 878 states and 2672 transitions. [2022-11-20 19:58:59,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 19:58:59,242 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:58:59,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:58:59,244 INFO L225 Difference]: With dead ends: 878 [2022-11-20 19:58:59,244 INFO L226 Difference]: Without dead ends: 878 [2022-11-20 19:58:59,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-20 19:58:59,245 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 145 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:58:59,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 0 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 19:58:59,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-11-20 19:58:59,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 662. [2022-11-20 19:58:59,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 3.1210287443267775) internal successors, (2063), 661 states have internal predecessors, (2063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:58:59,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 2063 transitions. [2022-11-20 19:58:59,261 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 2063 transitions. Word has length 36 [2022-11-20 19:58:59,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:58:59,261 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 2063 transitions. [2022-11-20 19:58:59,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:58:59,262 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 2063 transitions. [2022-11-20 19:58:59,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:58:59,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:58:59,263 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] [2022-11-20 19:58:59,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-20 19:58:59,264 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)] === [2022-11-20 19:58:59,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:58:59,264 INFO L85 PathProgramCache]: Analyzing trace with hash -938331219, now seen corresponding path program 10 times [2022-11-20 19:58:59,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:58:59,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909589547] [2022-11-20 19:58:59,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:58:59,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:58:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:58:59,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:58:59,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:58:59,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909589547] [2022-11-20 19:58:59,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909589547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:58:59,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:58:59,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 19:58:59,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431721065] [2022-11-20 19:58:59,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:58:59,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 19:58:59,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:58:59,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 19:58:59,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 19:58:59,677 INFO L87 Difference]: Start difference. First operand 662 states and 2063 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:58:59,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:58:59,938 INFO L93 Difference]: Finished difference Result 746 states and 2249 transitions. [2022-11-20 19:58:59,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 19:58:59,939 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:58:59,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:58:59,941 INFO L225 Difference]: With dead ends: 746 [2022-11-20 19:58:59,941 INFO L226 Difference]: Without dead ends: 746 [2022-11-20 19:58:59,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-20 19:58:59,942 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 140 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:58:59,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 0 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 19:58:59,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-11-20 19:58:59,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 638. [2022-11-20 19:58:59,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 637 states have (on average 3.0800627943485086) internal successors, (1962), 637 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:58:59,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1962 transitions. [2022-11-20 19:58:59,957 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1962 transitions. Word has length 36 [2022-11-20 19:58:59,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:58:59,958 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 1962 transitions. [2022-11-20 19:58:59,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:58:59,958 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1962 transitions. [2022-11-20 19:58:59,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:58:59,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:58:59,960 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] [2022-11-20 19:58:59,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-20 19:58:59,960 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)] === [2022-11-20 19:58:59,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:58:59,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1834294640, now seen corresponding path program 1 times [2022-11-20 19:58:59,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:58:59,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364218733] [2022-11-20 19:58:59,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:58:59,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:00,798 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:00,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:00,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364218733] [2022-11-20 19:59:00,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364218733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:00,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:00,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:59:00,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845119672] [2022-11-20 19:59:00,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:00,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:00,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:00,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:00,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:00,801 INFO L87 Difference]: Start difference. First operand 638 states and 1962 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:01,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:01,662 INFO L93 Difference]: Finished difference Result 831 states and 2396 transitions. [2022-11-20 19:59:01,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 19:59:01,663 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:01,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:01,664 INFO L225 Difference]: With dead ends: 831 [2022-11-20 19:59:01,664 INFO L226 Difference]: Without dead ends: 802 [2022-11-20 19:59:01,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-11-20 19:59:01,665 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 203 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:01,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 0 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:59:01,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-11-20 19:59:01,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 686. [2022-11-20 19:59:01,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 685 states have (on average 3.065693430656934) internal successors, (2100), 685 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:01,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 2100 transitions. [2022-11-20 19:59:01,677 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 2100 transitions. Word has length 36 [2022-11-20 19:59:01,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:01,677 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 2100 transitions. [2022-11-20 19:59:01,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:01,677 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 2100 transitions. [2022-11-20 19:59:01,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:01,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:01,679 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] [2022-11-20 19:59:01,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-20 19:59:01,679 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)] === [2022-11-20 19:59:01,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:01,679 INFO L85 PathProgramCache]: Analyzing trace with hash -465778018, now seen corresponding path program 2 times [2022-11-20 19:59:01,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:01,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531856263] [2022-11-20 19:59:01,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:01,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:02,502 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:02,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:02,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531856263] [2022-11-20 19:59:02,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531856263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:02,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:02,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 19:59:02,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901404662] [2022-11-20 19:59:02,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:02,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 19:59:02,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:02,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 19:59:02,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-20 19:59:02,505 INFO L87 Difference]: Start difference. First operand 686 states and 2100 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) [2022-11-20 19:59:02,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:02,986 INFO L93 Difference]: Finished difference Result 767 states and 2257 transitions. [2022-11-20 19:59:02,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 19:59:02,987 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 [2022-11-20 19:59:02,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:02,988 INFO L225 Difference]: With dead ends: 767 [2022-11-20 19:59:02,988 INFO L226 Difference]: Without dead ends: 755 [2022-11-20 19:59:02,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-11-20 19:59:02,989 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 190 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:02,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 0 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 19:59:02,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-11-20 19:59:02,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 715. [2022-11-20 19:59:02,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 714 states have (on average 3.044817927170868) internal successors, (2174), 714 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:03,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 2174 transitions. [2022-11-20 19:59:03,001 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 2174 transitions. Word has length 36 [2022-11-20 19:59:03,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:03,001 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 2174 transitions. [2022-11-20 19:59:03,001 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) [2022-11-20 19:59:03,001 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 2174 transitions. [2022-11-20 19:59:03,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:03,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:03,003 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] [2022-11-20 19:59:03,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-20 19:59:03,003 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)] === [2022-11-20 19:59:03,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:03,004 INFO L85 PathProgramCache]: Analyzing trace with hash -928932920, now seen corresponding path program 3 times [2022-11-20 19:59:03,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:03,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010660118] [2022-11-20 19:59:03,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:03,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:03,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:03,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:03,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010660118] [2022-11-20 19:59:03,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010660118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:03,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:03,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:59:03,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113940382] [2022-11-20 19:59:03,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:03,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:03,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:03,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:03,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:03,840 INFO L87 Difference]: Start difference. First operand 715 states and 2174 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:04,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:04,678 INFO L93 Difference]: Finished difference Result 785 states and 2279 transitions. [2022-11-20 19:59:04,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:59:04,678 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:04,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:04,680 INFO L225 Difference]: With dead ends: 785 [2022-11-20 19:59:04,680 INFO L226 Difference]: Without dead ends: 767 [2022-11-20 19:59:04,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2022-11-20 19:59:04,681 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 219 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:04,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 0 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:59:04,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-11-20 19:59:04,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 678. [2022-11-20 19:59:04,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 677 states have (on average 3.039881831610044) internal successors, (2058), 677 states have internal predecessors, (2058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:04,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 2058 transitions. [2022-11-20 19:59:04,692 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 2058 transitions. Word has length 36 [2022-11-20 19:59:04,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:04,692 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 2058 transitions. [2022-11-20 19:59:04,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:04,692 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 2058 transitions. [2022-11-20 19:59:04,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:04,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:04,694 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] [2022-11-20 19:59:04,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-11-20 19:59:04,694 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)] === [2022-11-20 19:59:04,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:04,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1092892720, now seen corresponding path program 4 times [2022-11-20 19:59:04,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:04,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506431125] [2022-11-20 19:59:04,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:04,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:05,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:05,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:05,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506431125] [2022-11-20 19:59:05,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506431125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:05,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:05,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:59:05,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341722929] [2022-11-20 19:59:05,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:05,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:05,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:05,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:05,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:05,408 INFO L87 Difference]: Start difference. First operand 678 states and 2058 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:06,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:06,148 INFO L93 Difference]: Finished difference Result 739 states and 2145 transitions. [2022-11-20 19:59:06,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:59:06,148 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:06,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:06,150 INFO L225 Difference]: With dead ends: 739 [2022-11-20 19:59:06,150 INFO L226 Difference]: Without dead ends: 724 [2022-11-20 19:59:06,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2022-11-20 19:59:06,151 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 218 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:06,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 0 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 19:59:06,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-11-20 19:59:06,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 674. [2022-11-20 19:59:06,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 673 states have (on average 3.038632986627043) internal successors, (2045), 673 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:06,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 2045 transitions. [2022-11-20 19:59:06,162 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 2045 transitions. Word has length 36 [2022-11-20 19:59:06,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:06,162 INFO L495 AbstractCegarLoop]: Abstraction has 674 states and 2045 transitions. [2022-11-20 19:59:06,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:06,162 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 2045 transitions. [2022-11-20 19:59:06,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:06,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:06,163 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] [2022-11-20 19:59:06,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-11-20 19:59:06,164 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)] === [2022-11-20 19:59:06,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:06,164 INFO L85 PathProgramCache]: Analyzing trace with hash -922670498, now seen corresponding path program 5 times [2022-11-20 19:59:06,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:06,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101411543] [2022-11-20 19:59:06,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:06,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:06,984 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:06,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:06,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101411543] [2022-11-20 19:59:06,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101411543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:06,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:06,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 19:59:06,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922740197] [2022-11-20 19:59:06,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:06,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 19:59:06,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:06,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 19:59:06,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:59:06,986 INFO L87 Difference]: Start difference. First operand 674 states and 2045 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) [2022-11-20 19:59:07,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:07,609 INFO L93 Difference]: Finished difference Result 753 states and 2165 transitions. [2022-11-20 19:59:07,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 19:59:07,610 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 [2022-11-20 19:59:07,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:07,611 INFO L225 Difference]: With dead ends: 753 [2022-11-20 19:59:07,611 INFO L226 Difference]: Without dead ends: 742 [2022-11-20 19:59:07,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2022-11-20 19:59:07,612 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 242 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:07,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 0 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 19:59:07,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-11-20 19:59:07,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 686. [2022-11-20 19:59:07,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 685 states have (on average 3.011678832116788) internal successors, (2063), 685 states have internal predecessors, (2063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:07,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 2063 transitions. [2022-11-20 19:59:07,624 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 2063 transitions. Word has length 36 [2022-11-20 19:59:07,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:07,624 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 2063 transitions. [2022-11-20 19:59:07,624 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) [2022-11-20 19:59:07,624 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 2063 transitions. [2022-11-20 19:59:07,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:07,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:07,625 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] [2022-11-20 19:59:07,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-11-20 19:59:07,626 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)] === [2022-11-20 19:59:07,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:07,627 INFO L85 PathProgramCache]: Analyzing trace with hash 471858682, now seen corresponding path program 6 times [2022-11-20 19:59:07,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:07,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621792867] [2022-11-20 19:59:07,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:07,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:08,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:08,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621792867] [2022-11-20 19:59:08,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621792867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:08,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:08,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 19:59:08,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132540348] [2022-11-20 19:59:08,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:08,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 19:59:08,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:08,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 19:59:08,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-20 19:59:08,243 INFO L87 Difference]: Start difference. First operand 686 states and 2063 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) [2022-11-20 19:59:08,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:08,835 INFO L93 Difference]: Finished difference Result 876 states and 2474 transitions. [2022-11-20 19:59:08,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:59:08,835 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 [2022-11-20 19:59:08,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:08,837 INFO L225 Difference]: With dead ends: 876 [2022-11-20 19:59:08,837 INFO L226 Difference]: Without dead ends: 844 [2022-11-20 19:59:08,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-11-20 19:59:08,838 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 207 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:08,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 0 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 19:59:08,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2022-11-20 19:59:08,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 746. [2022-11-20 19:59:08,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 745 states have (on average 3.004026845637584) internal successors, (2238), 745 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:08,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 2238 transitions. [2022-11-20 19:59:08,850 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 2238 transitions. Word has length 36 [2022-11-20 19:59:08,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:08,850 INFO L495 AbstractCegarLoop]: Abstraction has 746 states and 2238 transitions. [2022-11-20 19:59:08,850 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) [2022-11-20 19:59:08,850 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 2238 transitions. [2022-11-20 19:59:08,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:08,852 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:08,852 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] [2022-11-20 19:59:08,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-11-20 19:59:08,853 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)] === [2022-11-20 19:59:08,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:08,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2003598418, now seen corresponding path program 7 times [2022-11-20 19:59:08,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:08,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704507164] [2022-11-20 19:59:08,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:08,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:09,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:09,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:09,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704507164] [2022-11-20 19:59:09,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704507164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:09,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:09,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:59:09,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583035490] [2022-11-20 19:59:09,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:09,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:09,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:09,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:09,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:09,769 INFO L87 Difference]: Start difference. First operand 746 states and 2238 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:10,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:10,543 INFO L93 Difference]: Finished difference Result 830 states and 2388 transitions. [2022-11-20 19:59:10,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:59:10,544 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:10,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:10,545 INFO L225 Difference]: With dead ends: 830 [2022-11-20 19:59:10,545 INFO L226 Difference]: Without dead ends: 812 [2022-11-20 19:59:10,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-11-20 19:59:10,546 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 175 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:10,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 0 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:59:10,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-11-20 19:59:10,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 748. [2022-11-20 19:59:10,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 747 states have (on average 3.001338688085676) internal successors, (2242), 747 states have internal predecessors, (2242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:10,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 2242 transitions. [2022-11-20 19:59:10,562 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 2242 transitions. Word has length 36 [2022-11-20 19:59:10,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:10,562 INFO L495 AbstractCegarLoop]: Abstraction has 748 states and 2242 transitions. [2022-11-20 19:59:10,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:10,562 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 2242 transitions. [2022-11-20 19:59:10,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:10,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:10,564 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] [2022-11-20 19:59:10,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-11-20 19:59:10,565 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)] === [2022-11-20 19:59:10,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:10,565 INFO L85 PathProgramCache]: Analyzing trace with hash -269543238, now seen corresponding path program 8 times [2022-11-20 19:59:10,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:10,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534326799] [2022-11-20 19:59:10,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:10,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:11,238 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:11,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:11,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534326799] [2022-11-20 19:59:11,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534326799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:11,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:11,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:59:11,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769605461] [2022-11-20 19:59:11,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:11,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:11,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:11,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:11,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:11,240 INFO L87 Difference]: Start difference. First operand 748 states and 2242 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:11,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:11,820 INFO L93 Difference]: Finished difference Result 817 states and 2358 transitions. [2022-11-20 19:59:11,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:59:11,820 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:11,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:11,822 INFO L225 Difference]: With dead ends: 817 [2022-11-20 19:59:11,822 INFO L226 Difference]: Without dead ends: 802 [2022-11-20 19:59:11,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2022-11-20 19:59:11,822 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 234 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:11,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 0 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 19:59:11,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-11-20 19:59:11,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 750. [2022-11-20 19:59:11,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 749 states have (on average 3.0) internal successors, (2247), 749 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:11,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 2247 transitions. [2022-11-20 19:59:11,843 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 2247 transitions. Word has length 36 [2022-11-20 19:59:11,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:11,843 INFO L495 AbstractCegarLoop]: Abstraction has 750 states and 2247 transitions. [2022-11-20 19:59:11,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:11,843 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 2247 transitions. [2022-11-20 19:59:11,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:11,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:11,855 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] [2022-11-20 19:59:11,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-11-20 19:59:11,856 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)] === [2022-11-20 19:59:11,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:11,857 INFO L85 PathProgramCache]: Analyzing trace with hash -502379782, now seen corresponding path program 9 times [2022-11-20 19:59:11,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:11,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217500125] [2022-11-20 19:59:11,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:11,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:12,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:12,607 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:12,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217500125] [2022-11-20 19:59:12,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217500125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:12,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:12,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:59:12,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962083196] [2022-11-20 19:59:12,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:12,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:12,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:12,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:12,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:12,609 INFO L87 Difference]: Start difference. First operand 750 states and 2247 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:13,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:13,202 INFO L93 Difference]: Finished difference Result 834 states and 2428 transitions. [2022-11-20 19:59:13,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:59:13,203 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:13,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:13,204 INFO L225 Difference]: With dead ends: 834 [2022-11-20 19:59:13,205 INFO L226 Difference]: Without dead ends: 819 [2022-11-20 19:59:13,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-11-20 19:59:13,205 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 155 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:13,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 0 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 19:59:13,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-11-20 19:59:13,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 761. [2022-11-20 19:59:13,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 760 states have (on average 2.9894736842105263) internal successors, (2272), 760 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:13,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 2272 transitions. [2022-11-20 19:59:13,217 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 2272 transitions. Word has length 36 [2022-11-20 19:59:13,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:13,218 INFO L495 AbstractCegarLoop]: Abstraction has 761 states and 2272 transitions. [2022-11-20 19:59:13,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:13,218 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 2272 transitions. [2022-11-20 19:59:13,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:13,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:13,219 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] [2022-11-20 19:59:13,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-11-20 19:59:13,220 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)] === [2022-11-20 19:59:13,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:13,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1492514856, now seen corresponding path program 10 times [2022-11-20 19:59:13,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:13,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689704013] [2022-11-20 19:59:13,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:13,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:14,224 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 19:59:14,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:14,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689704013] [2022-11-20 19:59:14,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689704013] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:59:14,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058758537] [2022-11-20 19:59:14,225 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 19:59:14,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:59:14,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:59:14,226 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:59:14,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 19:59:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:14,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-20 19:59:14,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:59:14,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:14,605 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2022-11-20 19:59:14,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2022-11-20 19:59:14,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:14,665 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-20 19:59:14,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 19:59:15,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:15,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:15,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:59:15,823 INFO L321 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-11-20 19:59:15,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 61 [2022-11-20 19:59:16,212 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 19:59:16,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 133 [2022-11-20 19:59:16,358 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:16,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:59:16,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058758537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:16,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 19:59:16,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 25 [2022-11-20 19:59:16,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101999350] [2022-11-20 19:59:16,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:16,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:16,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:16,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:16,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2022-11-20 19:59:16,360 INFO L87 Difference]: Start difference. First operand 761 states and 2272 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:17,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:17,938 INFO L93 Difference]: Finished difference Result 792 states and 2333 transitions. [2022-11-20 19:59:17,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 19:59:17,939 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:17,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:17,940 INFO L225 Difference]: With dead ends: 792 [2022-11-20 19:59:17,940 INFO L226 Difference]: Without dead ends: 780 [2022-11-20 19:59:17,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=233, Invalid=1173, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 19:59:17,941 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 163 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:17,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 0 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 382 Invalid, 0 Unknown, 85 Unchecked, 0.5s Time] [2022-11-20 19:59:17,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-11-20 19:59:17,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 760. [2022-11-20 19:59:17,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 759 states have (on average 2.9960474308300395) internal successors, (2274), 759 states have internal predecessors, (2274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:17,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 2274 transitions. [2022-11-20 19:59:17,953 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 2274 transitions. Word has length 36 [2022-11-20 19:59:17,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:17,954 INFO L495 AbstractCegarLoop]: Abstraction has 760 states and 2274 transitions. [2022-11-20 19:59:17,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:17,954 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 2274 transitions. [2022-11-20 19:59:17,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:17,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:17,955 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] [2022-11-20 19:59:17,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 19:59:18,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-11-20 19:59:18,156 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)] === [2022-11-20 19:59:18,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:18,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1029359954, now seen corresponding path program 11 times [2022-11-20 19:59:18,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:18,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791653478] [2022-11-20 19:59:18,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:18,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:19,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:19,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:19,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791653478] [2022-11-20 19:59:19,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791653478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:19,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:19,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:59:19,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447869622] [2022-11-20 19:59:19,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:19,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:19,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:19,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:19,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:19,291 INFO L87 Difference]: Start difference. First operand 760 states and 2274 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:20,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:20,027 INFO L93 Difference]: Finished difference Result 802 states and 2340 transitions. [2022-11-20 19:59:20,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:59:20,028 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:20,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:20,029 INFO L225 Difference]: With dead ends: 802 [2022-11-20 19:59:20,029 INFO L226 Difference]: Without dead ends: 784 [2022-11-20 19:59:20,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-11-20 19:59:20,030 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 141 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:20,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 0 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 19:59:20,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-11-20 19:59:20,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 754. [2022-11-20 19:59:20,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 2.99601593625498) internal successors, (2256), 753 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:20,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 2256 transitions. [2022-11-20 19:59:20,042 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 2256 transitions. Word has length 36 [2022-11-20 19:59:20,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:20,042 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 2256 transitions. [2022-11-20 19:59:20,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:20,042 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 2256 transitions. [2022-11-20 19:59:20,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:20,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:20,043 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] [2022-11-20 19:59:20,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-11-20 19:59:20,044 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)] === [2022-11-20 19:59:20,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:20,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1578091814, now seen corresponding path program 12 times [2022-11-20 19:59:20,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:20,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427571209] [2022-11-20 19:59:20,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:20,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:20,862 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:20,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:20,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427571209] [2022-11-20 19:59:20,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427571209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:20,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:20,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:59:20,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953180638] [2022-11-20 19:59:20,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:20,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:20,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:20,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:20,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:20,864 INFO L87 Difference]: Start difference. First operand 754 states and 2256 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:21,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:21,658 INFO L93 Difference]: Finished difference Result 840 states and 2439 transitions. [2022-11-20 19:59:21,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 19:59:21,659 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:21,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:21,660 INFO L225 Difference]: With dead ends: 840 [2022-11-20 19:59:21,660 INFO L226 Difference]: Without dead ends: 825 [2022-11-20 19:59:21,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2022-11-20 19:59:21,661 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 191 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:21,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 0 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 19:59:21,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2022-11-20 19:59:21,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 766. [2022-11-20 19:59:21,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 765 states have (on average 2.9790849673202615) internal successors, (2279), 765 states have internal predecessors, (2279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:21,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 2279 transitions. [2022-11-20 19:59:21,673 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 2279 transitions. Word has length 36 [2022-11-20 19:59:21,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:21,674 INFO L495 AbstractCegarLoop]: Abstraction has 766 states and 2279 transitions. [2022-11-20 19:59:21,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:21,674 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 2279 transitions. [2022-11-20 19:59:21,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:21,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:21,675 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] [2022-11-20 19:59:21,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-11-20 19:59:21,675 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)] === [2022-11-20 19:59:21,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:21,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1796727468, now seen corresponding path program 13 times [2022-11-20 19:59:21,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:21,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912725288] [2022-11-20 19:59:21,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:21,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:22,183 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:22,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:22,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912725288] [2022-11-20 19:59:22,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912725288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:22,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:22,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 19:59:22,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275564254] [2022-11-20 19:59:22,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:22,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 19:59:22,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:22,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 19:59:22,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-20 19:59:22,185 INFO L87 Difference]: Start difference. First operand 766 states and 2279 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) [2022-11-20 19:59:22,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:22,642 INFO L93 Difference]: Finished difference Result 841 states and 2451 transitions. [2022-11-20 19:59:22,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 19:59:22,642 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 [2022-11-20 19:59:22,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:22,644 INFO L225 Difference]: With dead ends: 841 [2022-11-20 19:59:22,644 INFO L226 Difference]: Without dead ends: 815 [2022-11-20 19:59:22,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-11-20 19:59:22,645 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:22,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 0 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 19:59:22,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2022-11-20 19:59:22,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 770. [2022-11-20 19:59:22,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 769 states have (on average 2.977893368010403) internal successors, (2290), 769 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:22,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 2290 transitions. [2022-11-20 19:59:22,661 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 2290 transitions. Word has length 36 [2022-11-20 19:59:22,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:22,662 INFO L495 AbstractCegarLoop]: Abstraction has 770 states and 2290 transitions. [2022-11-20 19:59:22,662 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) [2022-11-20 19:59:22,662 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 2290 transitions. [2022-11-20 19:59:22,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:22,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:22,664 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] [2022-11-20 19:59:22,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-11-20 19:59:22,665 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)] === [2022-11-20 19:59:22,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:22,665 INFO L85 PathProgramCache]: Analyzing trace with hash -47667782, now seen corresponding path program 14 times [2022-11-20 19:59:22,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:22,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774900310] [2022-11-20 19:59:22,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:22,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:23,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:23,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:23,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774900310] [2022-11-20 19:59:23,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774900310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:23,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:23,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:59:23,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888463633] [2022-11-20 19:59:23,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:23,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:23,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:23,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:23,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:23,351 INFO L87 Difference]: Start difference. First operand 770 states and 2290 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:23,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:23,923 INFO L93 Difference]: Finished difference Result 794 states and 2334 transitions. [2022-11-20 19:59:23,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:59:23,924 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:23,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:23,925 INFO L225 Difference]: With dead ends: 794 [2022-11-20 19:59:23,925 INFO L226 Difference]: Without dead ends: 785 [2022-11-20 19:59:23,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2022-11-20 19:59:23,926 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 167 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:23,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 0 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 19:59:23,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2022-11-20 19:59:23,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 772. [2022-11-20 19:59:23,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 771 states have (on average 2.974059662775616) internal successors, (2293), 771 states have internal predecessors, (2293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:23,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 2293 transitions. [2022-11-20 19:59:23,938 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 2293 transitions. Word has length 36 [2022-11-20 19:59:23,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:23,938 INFO L495 AbstractCegarLoop]: Abstraction has 772 states and 2293 transitions. [2022-11-20 19:59:23,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:23,938 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 2293 transitions. [2022-11-20 19:59:23,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:23,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:23,940 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] [2022-11-20 19:59:23,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-11-20 19:59:23,940 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)] === [2022-11-20 19:59:23,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:23,940 INFO L85 PathProgramCache]: Analyzing trace with hash -84535834, now seen corresponding path program 15 times [2022-11-20 19:59:23,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:23,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279896318] [2022-11-20 19:59:23,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:23,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:24,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:24,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:24,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279896318] [2022-11-20 19:59:24,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279896318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:24,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:24,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:59:24,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435277320] [2022-11-20 19:59:24,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:24,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:24,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:24,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:24,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:24,753 INFO L87 Difference]: Start difference. First operand 772 states and 2293 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:25,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:25,421 INFO L93 Difference]: Finished difference Result 796 states and 2336 transitions. [2022-11-20 19:59:25,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:59:25,422 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:25,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:25,423 INFO L225 Difference]: With dead ends: 796 [2022-11-20 19:59:25,424 INFO L226 Difference]: Without dead ends: 780 [2022-11-20 19:59:25,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2022-11-20 19:59:25,424 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 207 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:25,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 0 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 19:59:25,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-11-20 19:59:25,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 767. [2022-11-20 19:59:25,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 766 states have (on average 2.9778067885117494) internal successors, (2281), 766 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:25,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 2281 transitions. [2022-11-20 19:59:25,440 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 2281 transitions. Word has length 36 [2022-11-20 19:59:25,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:25,440 INFO L495 AbstractCegarLoop]: Abstraction has 767 states and 2281 transitions. [2022-11-20 19:59:25,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:25,440 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 2281 transitions. [2022-11-20 19:59:25,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:25,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:25,442 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] [2022-11-20 19:59:25,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-11-20 19:59:25,443 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)] === [2022-11-20 19:59:25,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:25,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1557435908, now seen corresponding path program 16 times [2022-11-20 19:59:25,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:25,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119207110] [2022-11-20 19:59:25,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:25,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:26,197 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:26,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:26,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119207110] [2022-11-20 19:59:26,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119207110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:26,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:26,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:59:26,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052768512] [2022-11-20 19:59:26,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:26,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:26,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:26,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:26,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:26,199 INFO L87 Difference]: Start difference. First operand 767 states and 2281 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:26,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:26,838 INFO L93 Difference]: Finished difference Result 791 states and 2324 transitions. [2022-11-20 19:59:26,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:59:26,838 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:26,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:26,840 INFO L225 Difference]: With dead ends: 791 [2022-11-20 19:59:26,840 INFO L226 Difference]: Without dead ends: 780 [2022-11-20 19:59:26,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2022-11-20 19:59:26,840 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 170 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:26,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 0 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 19:59:26,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-11-20 19:59:26,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 767. [2022-11-20 19:59:26,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 766 states have (on average 2.9778067885117494) internal successors, (2281), 766 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:26,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 2281 transitions. [2022-11-20 19:59:26,851 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 2281 transitions. Word has length 36 [2022-11-20 19:59:26,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:26,851 INFO L495 AbstractCegarLoop]: Abstraction has 767 states and 2281 transitions. [2022-11-20 19:59:26,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:26,852 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 2281 transitions. [2022-11-20 19:59:26,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:26,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:26,854 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] [2022-11-20 19:59:26,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-11-20 19:59:26,854 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)] === [2022-11-20 19:59:26,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:26,854 INFO L85 PathProgramCache]: Analyzing trace with hash -646827176, now seen corresponding path program 17 times [2022-11-20 19:59:26,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:26,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713510375] [2022-11-20 19:59:26,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:26,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:27,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:27,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:27,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713510375] [2022-11-20 19:59:27,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713510375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:27,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:27,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:59:27,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594844721] [2022-11-20 19:59:27,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:27,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:27,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:27,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:27,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:27,738 INFO L87 Difference]: Start difference. First operand 767 states and 2281 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:28,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:28,458 INFO L93 Difference]: Finished difference Result 802 states and 2332 transitions. [2022-11-20 19:59:28,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:59:28,458 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:28,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:28,460 INFO L225 Difference]: With dead ends: 802 [2022-11-20 19:59:28,460 INFO L226 Difference]: Without dead ends: 779 [2022-11-20 19:59:28,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-11-20 19:59:28,460 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 215 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:28,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 0 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 19:59:28,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2022-11-20 19:59:28,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 760. [2022-11-20 19:59:28,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 759 states have (on average 2.986824769433465) internal successors, (2267), 759 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:28,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 2267 transitions. [2022-11-20 19:59:28,471 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 2267 transitions. Word has length 36 [2022-11-20 19:59:28,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:28,472 INFO L495 AbstractCegarLoop]: Abstraction has 760 states and 2267 transitions. [2022-11-20 19:59:28,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:28,472 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 2267 transitions. [2022-11-20 19:59:28,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:28,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:28,473 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] [2022-11-20 19:59:28,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-11-20 19:59:28,473 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)] === [2022-11-20 19:59:28,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:28,474 INFO L85 PathProgramCache]: Analyzing trace with hash -770564760, now seen corresponding path program 18 times [2022-11-20 19:59:28,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:28,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369918613] [2022-11-20 19:59:28,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:28,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:29,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:29,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:29,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369918613] [2022-11-20 19:59:29,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369918613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:29,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:29,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:59:29,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287093910] [2022-11-20 19:59:29,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:29,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:29,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:29,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:29,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:29,164 INFO L87 Difference]: Start difference. First operand 760 states and 2267 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:29,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:29,820 INFO L93 Difference]: Finished difference Result 797 states and 2323 transitions. [2022-11-20 19:59:29,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:59:29,821 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:29,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:29,822 INFO L225 Difference]: With dead ends: 797 [2022-11-20 19:59:29,822 INFO L226 Difference]: Without dead ends: 786 [2022-11-20 19:59:29,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2022-11-20 19:59:29,823 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 195 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:29,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 0 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 19:59:29,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-11-20 19:59:29,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 762. [2022-11-20 19:59:29,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 761 states have (on average 2.9829172141918527) internal successors, (2270), 761 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:29,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 2270 transitions. [2022-11-20 19:59:29,833 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 2270 transitions. Word has length 36 [2022-11-20 19:59:29,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:29,833 INFO L495 AbstractCegarLoop]: Abstraction has 762 states and 2270 transitions. [2022-11-20 19:59:29,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:29,833 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 2270 transitions. [2022-11-20 19:59:29,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:29,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:29,835 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] [2022-11-20 19:59:29,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-11-20 19:59:29,836 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)] === [2022-11-20 19:59:29,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:29,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1026484840, now seen corresponding path program 19 times [2022-11-20 19:59:29,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:29,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5752944] [2022-11-20 19:59:29,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:29,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:30,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:30,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:30,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5752944] [2022-11-20 19:59:30,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5752944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:30,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:30,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:59:30,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904678094] [2022-11-20 19:59:30,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:30,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:30,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:30,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:30,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:30,425 INFO L87 Difference]: Start difference. First operand 762 states and 2270 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:30,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:30,992 INFO L93 Difference]: Finished difference Result 785 states and 2308 transitions. [2022-11-20 19:59:30,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:59:30,993 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:30,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:30,994 INFO L225 Difference]: With dead ends: 785 [2022-11-20 19:59:30,994 INFO L226 Difference]: Without dead ends: 776 [2022-11-20 19:59:30,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-11-20 19:59:30,995 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 222 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:30,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 0 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 19:59:30,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2022-11-20 19:59:31,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 764. [2022-11-20 19:59:31,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 763 states have (on average 2.979030144167759) internal successors, (2273), 763 states have internal predecessors, (2273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:31,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 2273 transitions. [2022-11-20 19:59:31,004 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 2273 transitions. Word has length 36 [2022-11-20 19:59:31,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:31,005 INFO L495 AbstractCegarLoop]: Abstraction has 764 states and 2273 transitions. [2022-11-20 19:59:31,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:31,005 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 2273 transitions. [2022-11-20 19:59:31,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:31,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:31,006 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] [2022-11-20 19:59:31,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-11-20 19:59:31,006 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)] === [2022-11-20 19:59:31,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:31,007 INFO L85 PathProgramCache]: Analyzing trace with hash 989616788, now seen corresponding path program 20 times [2022-11-20 19:59:31,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:31,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759285573] [2022-11-20 19:59:31,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:31,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:31,595 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:31,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:31,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759285573] [2022-11-20 19:59:31,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759285573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:31,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:31,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:59:31,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637895393] [2022-11-20 19:59:31,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:31,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:31,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:31,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:31,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:31,597 INFO L87 Difference]: Start difference. First operand 764 states and 2273 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:32,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:32,195 INFO L93 Difference]: Finished difference Result 783 states and 2303 transitions. [2022-11-20 19:59:32,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:59:32,196 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:32,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:32,197 INFO L225 Difference]: With dead ends: 783 [2022-11-20 19:59:32,197 INFO L226 Difference]: Without dead ends: 764 [2022-11-20 19:59:32,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2022-11-20 19:59:32,198 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 214 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:32,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 0 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 19:59:32,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-11-20 19:59:32,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 756. [2022-11-20 19:59:32,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 755 states have (on average 2.9774834437086093) internal successors, (2248), 755 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:32,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 2248 transitions. [2022-11-20 19:59:32,207 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 2248 transitions. Word has length 36 [2022-11-20 19:59:32,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:32,207 INFO L495 AbstractCegarLoop]: Abstraction has 756 states and 2248 transitions. [2022-11-20 19:59:32,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:32,207 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 2248 transitions. [2022-11-20 19:59:32,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:32,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:32,209 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] [2022-11-20 19:59:32,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-11-20 19:59:32,209 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)] === [2022-11-20 19:59:32,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:32,209 INFO L85 PathProgramCache]: Analyzing trace with hash 725531504, now seen corresponding path program 21 times [2022-11-20 19:59:32,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:32,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814994224] [2022-11-20 19:59:32,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:32,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:32,732 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:32,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:32,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814994224] [2022-11-20 19:59:32,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814994224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:32,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:32,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 19:59:32,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562196767] [2022-11-20 19:59:32,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:32,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 19:59:32,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:32,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 19:59:32,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 19:59:32,734 INFO L87 Difference]: Start difference. First operand 756 states and 2248 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) [2022-11-20 19:59:33,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:33,338 INFO L93 Difference]: Finished difference Result 823 states and 2374 transitions. [2022-11-20 19:59:33,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 19:59:33,338 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 [2022-11-20 19:59:33,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:33,340 INFO L225 Difference]: With dead ends: 823 [2022-11-20 19:59:33,340 INFO L226 Difference]: Without dead ends: 812 [2022-11-20 19:59:33,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-11-20 19:59:33,341 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 167 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:33,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 0 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 19:59:33,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-11-20 19:59:33,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 768. [2022-11-20 19:59:33,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 767 states have (on average 2.9752281616688396) internal successors, (2282), 767 states have internal predecessors, (2282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:33,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 2282 transitions. [2022-11-20 19:59:33,352 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 2282 transitions. Word has length 36 [2022-11-20 19:59:33,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:33,352 INFO L495 AbstractCegarLoop]: Abstraction has 768 states and 2282 transitions. [2022-11-20 19:59:33,352 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) [2022-11-20 19:59:33,353 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 2282 transitions. [2022-11-20 19:59:33,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:33,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:33,354 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] [2022-11-20 19:59:33,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-11-20 19:59:33,354 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)] === [2022-11-20 19:59:33,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:33,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1171484922, now seen corresponding path program 22 times [2022-11-20 19:59:33,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:33,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182088551] [2022-11-20 19:59:33,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:33,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:33,820 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:33,820 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:33,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182088551] [2022-11-20 19:59:33,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182088551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:33,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:33,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 19:59:33,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789124078] [2022-11-20 19:59:33,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:33,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 19:59:33,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:33,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 19:59:33,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-20 19:59:33,822 INFO L87 Difference]: Start difference. First operand 768 states and 2282 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) [2022-11-20 19:59:34,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:34,392 INFO L93 Difference]: Finished difference Result 811 states and 2355 transitions. [2022-11-20 19:59:34,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 19:59:34,392 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 [2022-11-20 19:59:34,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:34,394 INFO L225 Difference]: With dead ends: 811 [2022-11-20 19:59:34,394 INFO L226 Difference]: Without dead ends: 800 [2022-11-20 19:59:34,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-11-20 19:59:34,395 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 170 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:34,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 0 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 19:59:34,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-11-20 19:59:34,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 770. [2022-11-20 19:59:34,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 769 states have (on average 2.9713914174252274) internal successors, (2285), 769 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:34,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 2285 transitions. [2022-11-20 19:59:34,412 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 2285 transitions. Word has length 36 [2022-11-20 19:59:34,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:34,412 INFO L495 AbstractCegarLoop]: Abstraction has 770 states and 2285 transitions. [2022-11-20 19:59:34,413 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) [2022-11-20 19:59:34,413 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 2285 transitions. [2022-11-20 19:59:34,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:34,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:34,415 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] [2022-11-20 19:59:34,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-11-20 19:59:34,415 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)] === [2022-11-20 19:59:34,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:34,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1326432774, now seen corresponding path program 23 times [2022-11-20 19:59:34,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:34,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285012706] [2022-11-20 19:59:34,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:34,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:35,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:35,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:35,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285012706] [2022-11-20 19:59:35,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285012706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:35,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:35,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 19:59:35,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404474655] [2022-11-20 19:59:35,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:35,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 19:59:35,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:35,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 19:59:35,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-20 19:59:35,075 INFO L87 Difference]: Start difference. First operand 770 states and 2285 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) [2022-11-20 19:59:35,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:35,550 INFO L93 Difference]: Finished difference Result 799 states and 2340 transitions. [2022-11-20 19:59:35,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 19:59:35,550 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 [2022-11-20 19:59:35,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:35,552 INFO L225 Difference]: With dead ends: 799 [2022-11-20 19:59:35,552 INFO L226 Difference]: Without dead ends: 790 [2022-11-20 19:59:35,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2022-11-20 19:59:35,553 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 141 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:35,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 0 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 19:59:35,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2022-11-20 19:59:35,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 772. [2022-11-20 19:59:35,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 771 states have (on average 2.96757457846952) internal successors, (2288), 771 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:35,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 2288 transitions. [2022-11-20 19:59:35,568 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 2288 transitions. Word has length 36 [2022-11-20 19:59:35,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:35,569 INFO L495 AbstractCegarLoop]: Abstraction has 772 states and 2288 transitions. [2022-11-20 19:59:35,569 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) [2022-11-20 19:59:35,569 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 2288 transitions. [2022-11-20 19:59:35,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:35,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:35,571 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] [2022-11-20 19:59:35,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-11-20 19:59:35,571 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)] === [2022-11-20 19:59:35,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:35,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1363300826, now seen corresponding path program 24 times [2022-11-20 19:59:35,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:35,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989519779] [2022-11-20 19:59:35,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:35,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:36,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:36,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:36,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989519779] [2022-11-20 19:59:36,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989519779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:36,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:36,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 19:59:36,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221572968] [2022-11-20 19:59:36,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:36,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 19:59:36,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:36,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 19:59:36,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-20 19:59:36,111 INFO L87 Difference]: Start difference. First operand 772 states and 2288 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) [2022-11-20 19:59:36,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:36,594 INFO L93 Difference]: Finished difference Result 797 states and 2335 transitions. [2022-11-20 19:59:36,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 19:59:36,594 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 [2022-11-20 19:59:36,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:36,596 INFO L225 Difference]: With dead ends: 797 [2022-11-20 19:59:36,596 INFO L226 Difference]: Without dead ends: 782 [2022-11-20 19:59:36,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2022-11-20 19:59:36,596 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 156 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:36,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 0 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 19:59:36,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-11-20 19:59:36,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 768. [2022-11-20 19:59:36,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 767 states have (on average 2.970013037809648) internal successors, (2278), 767 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:36,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 2278 transitions. [2022-11-20 19:59:36,607 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 2278 transitions. Word has length 36 [2022-11-20 19:59:36,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:36,607 INFO L495 AbstractCegarLoop]: Abstraction has 768 states and 2278 transitions. [2022-11-20 19:59:36,607 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) [2022-11-20 19:59:36,608 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 2278 transitions. [2022-11-20 19:59:36,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:36,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:36,609 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] [2022-11-20 19:59:36,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-11-20 19:59:36,609 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)] === [2022-11-20 19:59:36,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:36,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1669832944, now seen corresponding path program 25 times [2022-11-20 19:59:36,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:36,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316130267] [2022-11-20 19:59:36,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:36,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:37,328 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:37,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:37,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316130267] [2022-11-20 19:59:37,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316130267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:37,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:37,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 19:59:37,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213577363] [2022-11-20 19:59:37,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:37,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 19:59:37,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:37,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 19:59:37,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-20 19:59:37,329 INFO L87 Difference]: Start difference. First operand 768 states and 2278 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) [2022-11-20 19:59:37,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:37,738 INFO L93 Difference]: Finished difference Result 851 states and 2483 transitions. [2022-11-20 19:59:37,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 19:59:37,739 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 [2022-11-20 19:59:37,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:37,741 INFO L225 Difference]: With dead ends: 851 [2022-11-20 19:59:37,741 INFO L226 Difference]: Without dead ends: 836 [2022-11-20 19:59:37,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-20 19:59:37,742 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 193 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:37,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 0 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 19:59:37,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-11-20 19:59:37,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 801. [2022-11-20 19:59:37,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 800 states have (on average 2.98) internal successors, (2384), 800 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:37,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 2384 transitions. [2022-11-20 19:59:37,757 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 2384 transitions. Word has length 36 [2022-11-20 19:59:37,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:37,758 INFO L495 AbstractCegarLoop]: Abstraction has 801 states and 2384 transitions. [2022-11-20 19:59:37,758 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) [2022-11-20 19:59:37,758 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 2384 transitions. [2022-11-20 19:59:37,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:37,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:37,759 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] [2022-11-20 19:59:37,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-11-20 19:59:37,759 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)] === [2022-11-20 19:59:37,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:37,760 INFO L85 PathProgramCache]: Analyzing trace with hash -630239714, now seen corresponding path program 26 times [2022-11-20 19:59:37,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:37,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536898417] [2022-11-20 19:59:37,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:37,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:38,786 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:38,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:38,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536898417] [2022-11-20 19:59:38,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536898417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:38,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:38,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:59:38,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926765177] [2022-11-20 19:59:38,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:38,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:38,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:38,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:38,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:38,787 INFO L87 Difference]: Start difference. First operand 801 states and 2384 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:39,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:39,433 INFO L93 Difference]: Finished difference Result 1038 states and 2988 transitions. [2022-11-20 19:59:39,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:59:39,434 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:39,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:39,435 INFO L225 Difference]: With dead ends: 1038 [2022-11-20 19:59:39,435 INFO L226 Difference]: Without dead ends: 1026 [2022-11-20 19:59:39,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2022-11-20 19:59:39,436 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 205 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:39,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 0 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 19:59:39,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2022-11-20 19:59:39,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 858. [2022-11-20 19:59:39,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 857 states have (on average 3.010501750291715) internal successors, (2580), 857 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:39,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 2580 transitions. [2022-11-20 19:59:39,452 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 2580 transitions. Word has length 36 [2022-11-20 19:59:39,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:39,452 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 2580 transitions. [2022-11-20 19:59:39,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:39,452 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 2580 transitions. [2022-11-20 19:59:39,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:39,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:39,454 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] [2022-11-20 19:59:39,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-11-20 19:59:39,455 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)] === [2022-11-20 19:59:39,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:39,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1093394616, now seen corresponding path program 27 times [2022-11-20 19:59:39,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:39,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999317303] [2022-11-20 19:59:39,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:39,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:40,466 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:40,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:40,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999317303] [2022-11-20 19:59:40,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999317303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:40,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:40,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:59:40,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84967315] [2022-11-20 19:59:40,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:40,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:40,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:40,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:40,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:40,468 INFO L87 Difference]: Start difference. First operand 858 states and 2580 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:41,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:41,297 INFO L93 Difference]: Finished difference Result 1048 states and 2995 transitions. [2022-11-20 19:59:41,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:59:41,297 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:41,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:41,299 INFO L225 Difference]: With dead ends: 1048 [2022-11-20 19:59:41,299 INFO L226 Difference]: Without dead ends: 1030 [2022-11-20 19:59:41,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2022-11-20 19:59:41,299 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 219 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:41,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 0 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:59:41,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-11-20 19:59:41,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 855. [2022-11-20 19:59:41,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 3.0081967213114753) internal successors, (2569), 854 states have internal predecessors, (2569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:41,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 2569 transitions. [2022-11-20 19:59:41,315 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 2569 transitions. Word has length 36 [2022-11-20 19:59:41,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:41,316 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 2569 transitions. [2022-11-20 19:59:41,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:41,316 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 2569 transitions. [2022-11-20 19:59:41,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:41,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:41,318 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] [2022-11-20 19:59:41,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-11-20 19:59:41,318 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)] === [2022-11-20 19:59:41,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:41,319 INFO L85 PathProgramCache]: Analyzing trace with hash -544662756, now seen corresponding path program 28 times [2022-11-20 19:59:41,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:41,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493340707] [2022-11-20 19:59:41,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:41,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:42,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:42,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:42,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493340707] [2022-11-20 19:59:42,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493340707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:42,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:42,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:59:42,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011483591] [2022-11-20 19:59:42,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:42,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:42,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:42,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:42,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:42,043 INFO L87 Difference]: Start difference. First operand 855 states and 2569 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:42,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:42,701 INFO L93 Difference]: Finished difference Result 1053 states and 3005 transitions. [2022-11-20 19:59:42,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:59:42,702 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:42,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:42,704 INFO L225 Difference]: With dead ends: 1053 [2022-11-20 19:59:42,704 INFO L226 Difference]: Without dead ends: 1038 [2022-11-20 19:59:42,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2022-11-20 19:59:42,704 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 224 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:42,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 0 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 19:59:42,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-11-20 19:59:42,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 864. [2022-11-20 19:59:42,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 2.995365005793743) internal successors, (2585), 863 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:42,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 2585 transitions. [2022-11-20 19:59:42,718 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 2585 transitions. Word has length 36 [2022-11-20 19:59:42,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:42,718 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 2585 transitions. [2022-11-20 19:59:42,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:42,718 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 2585 transitions. [2022-11-20 19:59:42,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:42,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:42,720 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] [2022-11-20 19:59:42,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-11-20 19:59:42,721 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)] === [2022-11-20 19:59:42,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:42,721 INFO L85 PathProgramCache]: Analyzing trace with hash 375485258, now seen corresponding path program 29 times [2022-11-20 19:59:42,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:42,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615594960] [2022-11-20 19:59:42,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:42,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:43,177 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:43,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:43,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615594960] [2022-11-20 19:59:43,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615594960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:43,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:43,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 19:59:43,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158338339] [2022-11-20 19:59:43,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:43,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 19:59:43,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:43,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 19:59:43,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-20 19:59:43,178 INFO L87 Difference]: Start difference. First operand 864 states and 2585 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) [2022-11-20 19:59:43,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:43,601 INFO L93 Difference]: Finished difference Result 910 states and 2686 transitions. [2022-11-20 19:59:43,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 19:59:43,602 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 [2022-11-20 19:59:43,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:43,603 INFO L225 Difference]: With dead ends: 910 [2022-11-20 19:59:43,604 INFO L226 Difference]: Without dead ends: 893 [2022-11-20 19:59:43,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:59:43,604 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:43,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 19:59:43,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2022-11-20 19:59:43,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 858. [2022-11-20 19:59:43,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 857 states have (on average 3.001166861143524) internal successors, (2572), 857 states have internal predecessors, (2572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:43,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 2572 transitions. [2022-11-20 19:59:43,624 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 2572 transitions. Word has length 36 [2022-11-20 19:59:43,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:43,624 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 2572 transitions. [2022-11-20 19:59:43,624 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) [2022-11-20 19:59:43,625 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 2572 transitions. [2022-11-20 19:59:43,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:43,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:43,627 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] [2022-11-20 19:59:43,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-11-20 19:59:43,627 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)] === [2022-11-20 19:59:43,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:43,628 INFO L85 PathProgramCache]: Analyzing trace with hash 2124544944, now seen corresponding path program 30 times [2022-11-20 19:59:43,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:43,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317462487] [2022-11-20 19:59:43,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:43,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:44,412 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:44,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:44,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317462487] [2022-11-20 19:59:44,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317462487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:44,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:44,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:59:44,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690885635] [2022-11-20 19:59:44,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:44,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:44,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:44,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:44,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:44,413 INFO L87 Difference]: Start difference. First operand 858 states and 2572 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:45,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:45,162 INFO L93 Difference]: Finished difference Result 1031 states and 2967 transitions. [2022-11-20 19:59:45,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:59:45,163 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:45,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:45,164 INFO L225 Difference]: With dead ends: 1031 [2022-11-20 19:59:45,164 INFO L226 Difference]: Without dead ends: 1022 [2022-11-20 19:59:45,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2022-11-20 19:59:45,165 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 196 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:45,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 0 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 19:59:45,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2022-11-20 19:59:45,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 860. [2022-11-20 19:59:45,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 859 states have (on average 2.9976717112922002) internal successors, (2575), 859 states have internal predecessors, (2575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:45,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 2575 transitions. [2022-11-20 19:59:45,179 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 2575 transitions. Word has length 36 [2022-11-20 19:59:45,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:45,180 INFO L495 AbstractCegarLoop]: Abstraction has 860 states and 2575 transitions. [2022-11-20 19:59:45,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:45,180 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 2575 transitions. [2022-11-20 19:59:45,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:45,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:45,182 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] [2022-11-20 19:59:45,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-11-20 19:59:45,182 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)] === [2022-11-20 19:59:45,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:45,183 INFO L85 PathProgramCache]: Analyzing trace with hash 2087676892, now seen corresponding path program 31 times [2022-11-20 19:59:45,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:45,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534435255] [2022-11-20 19:59:45,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:45,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:45,984 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:45,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:45,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534435255] [2022-11-20 19:59:45,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534435255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:45,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:45,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:59:45,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120330667] [2022-11-20 19:59:45,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:45,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:45,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:45,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:45,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:45,988 INFO L87 Difference]: Start difference. First operand 860 states and 2575 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:46,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:46,684 INFO L93 Difference]: Finished difference Result 1033 states and 2969 transitions. [2022-11-20 19:59:46,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:59:46,685 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:46,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:46,687 INFO L225 Difference]: With dead ends: 1033 [2022-11-20 19:59:46,687 INFO L226 Difference]: Without dead ends: 1017 [2022-11-20 19:59:46,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2022-11-20 19:59:46,687 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 242 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:46,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 0 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 19:59:46,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2022-11-20 19:59:46,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 855. [2022-11-20 19:59:46,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 2.997658079625293) internal successors, (2560), 854 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:46,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 2560 transitions. [2022-11-20 19:59:46,702 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 2560 transitions. Word has length 36 [2022-11-20 19:59:46,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:46,703 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 2560 transitions. [2022-11-20 19:59:46,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:46,703 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 2560 transitions. [2022-11-20 19:59:46,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:46,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:46,704 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] [2022-11-20 19:59:46,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-11-20 19:59:46,705 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)] === [2022-11-20 19:59:46,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:46,705 INFO L85 PathProgramCache]: Analyzing trace with hash 614776818, now seen corresponding path program 32 times [2022-11-20 19:59:46,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:46,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278218201] [2022-11-20 19:59:46,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:46,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:47,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:47,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278218201] [2022-11-20 19:59:47,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278218201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:47,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:47,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:59:47,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769808585] [2022-11-20 19:59:47,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:47,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:47,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:47,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:47,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:47,477 INFO L87 Difference]: Start difference. First operand 855 states and 2560 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:48,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:48,250 INFO L93 Difference]: Finished difference Result 1037 states and 2974 transitions. [2022-11-20 19:59:48,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:59:48,250 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:48,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:48,252 INFO L225 Difference]: With dead ends: 1037 [2022-11-20 19:59:48,252 INFO L226 Difference]: Without dead ends: 1026 [2022-11-20 19:59:48,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2022-11-20 19:59:48,253 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 251 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:48,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 0 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:59:48,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2022-11-20 19:59:48,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 855. [2022-11-20 19:59:48,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 2.997658079625293) internal successors, (2560), 854 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:48,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 2560 transitions. [2022-11-20 19:59:48,274 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 2560 transitions. Word has length 36 [2022-11-20 19:59:48,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:48,274 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 2560 transitions. [2022-11-20 19:59:48,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:48,274 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 2560 transitions. [2022-11-20 19:59:48,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:48,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:48,276 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] [2022-11-20 19:59:48,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-11-20 19:59:48,277 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)] === [2022-11-20 19:59:48,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:48,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1525385550, now seen corresponding path program 33 times [2022-11-20 19:59:48,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:48,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379584968] [2022-11-20 19:59:48,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:48,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:49,016 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:49,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:49,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379584968] [2022-11-20 19:59:49,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379584968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:49,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:49,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:59:49,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724325051] [2022-11-20 19:59:49,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:49,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:49,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:49,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:49,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:49,017 INFO L87 Difference]: Start difference. First operand 855 states and 2560 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:49,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:49,805 INFO L93 Difference]: Finished difference Result 1048 states and 2982 transitions. [2022-11-20 19:59:49,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:59:49,806 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:49,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:49,807 INFO L225 Difference]: With dead ends: 1048 [2022-11-20 19:59:49,808 INFO L226 Difference]: Without dead ends: 1025 [2022-11-20 19:59:49,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2022-11-20 19:59:49,808 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 269 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:49,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 0 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:59:49,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2022-11-20 19:59:49,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 851. [2022-11-20 19:59:49,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 850 states have (on average 3.0023529411764707) internal successors, (2552), 850 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:49,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 2552 transitions. [2022-11-20 19:59:49,821 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 2552 transitions. Word has length 36 [2022-11-20 19:59:49,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:49,821 INFO L495 AbstractCegarLoop]: Abstraction has 851 states and 2552 transitions. [2022-11-20 19:59:49,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:49,822 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 2552 transitions. [2022-11-20 19:59:49,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:49,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:49,823 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] [2022-11-20 19:59:49,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-11-20 19:59:49,823 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)] === [2022-11-20 19:59:49,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:49,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1202611614, now seen corresponding path program 34 times [2022-11-20 19:59:49,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:49,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583203195] [2022-11-20 19:59:49,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:49,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:50,586 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:50,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:50,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583203195] [2022-11-20 19:59:50,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583203195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:50,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:50,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:59:50,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611637049] [2022-11-20 19:59:50,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:50,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:50,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:50,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:50,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:50,588 INFO L87 Difference]: Start difference. First operand 851 states and 2552 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:51,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:51,535 INFO L93 Difference]: Finished difference Result 1157 states and 3205 transitions. [2022-11-20 19:59:51,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 19:59:51,535 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:51,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:51,537 INFO L225 Difference]: With dead ends: 1157 [2022-11-20 19:59:51,537 INFO L226 Difference]: Without dead ends: 1128 [2022-11-20 19:59:51,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2022-11-20 19:59:51,538 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 242 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:51,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 0 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:59:51,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2022-11-20 19:59:51,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 894. [2022-11-20 19:59:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 893 states have (on average 2.983202687569989) internal successors, (2664), 893 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:51,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 2664 transitions. [2022-11-20 19:59:51,555 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 2664 transitions. Word has length 36 [2022-11-20 19:59:51,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:51,556 INFO L495 AbstractCegarLoop]: Abstraction has 894 states and 2664 transitions. [2022-11-20 19:59:51,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:51,556 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 2664 transitions. [2022-11-20 19:59:51,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:51,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:51,557 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] [2022-11-20 19:59:51,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-11-20 19:59:51,558 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)] === [2022-11-20 19:59:51,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:51,558 INFO L85 PathProgramCache]: Analyzing trace with hash 2122759628, now seen corresponding path program 35 times [2022-11-20 19:59:51,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:51,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129889969] [2022-11-20 19:59:51,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:51,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:51,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:52,171 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:52,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:52,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129889969] [2022-11-20 19:59:52,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129889969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:52,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:52,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 19:59:52,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597697190] [2022-11-20 19:59:52,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:52,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 19:59:52,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:52,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 19:59:52,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:59:52,173 INFO L87 Difference]: Start difference. First operand 894 states and 2664 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) [2022-11-20 19:59:53,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:53,027 INFO L93 Difference]: Finished difference Result 1130 states and 3162 transitions. [2022-11-20 19:59:53,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 19:59:53,027 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 [2022-11-20 19:59:53,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:53,029 INFO L225 Difference]: With dead ends: 1130 [2022-11-20 19:59:53,029 INFO L226 Difference]: Without dead ends: 1097 [2022-11-20 19:59:53,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2022-11-20 19:59:53,030 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 218 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:53,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 0 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:59:53,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2022-11-20 19:59:53,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 888. [2022-11-20 19:59:53,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 887 states have (on average 2.979706877113867) internal successors, (2643), 887 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:53,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 2643 transitions. [2022-11-20 19:59:53,052 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 2643 transitions. Word has length 36 [2022-11-20 19:59:53,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:53,053 INFO L495 AbstractCegarLoop]: Abstraction has 888 states and 2643 transitions. [2022-11-20 19:59:53,053 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) [2022-11-20 19:59:53,053 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 2643 transitions. [2022-11-20 19:59:53,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:53,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:53,055 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] [2022-11-20 19:59:53,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-11-20 19:59:53,055 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)] === [2022-11-20 19:59:53,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:53,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1913555934, now seen corresponding path program 36 times [2022-11-20 19:59:53,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:53,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651013471] [2022-11-20 19:59:53,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:53,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:53,848 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:53,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:53,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651013471] [2022-11-20 19:59:53,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651013471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:53,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:53,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:59:53,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616843978] [2022-11-20 19:59:53,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:53,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:53,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:53,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:53,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:53,849 INFO L87 Difference]: Start difference. First operand 888 states and 2643 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:54,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:54,624 INFO L93 Difference]: Finished difference Result 1087 states and 3079 transitions. [2022-11-20 19:59:54,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:59:54,625 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:54,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:54,627 INFO L225 Difference]: With dead ends: 1087 [2022-11-20 19:59:54,627 INFO L226 Difference]: Without dead ends: 1067 [2022-11-20 19:59:54,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-11-20 19:59:54,627 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 249 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:54,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 0 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 19:59:54,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2022-11-20 19:59:54,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 933. [2022-11-20 19:59:54,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 932 states have (on average 2.9463519313304722) internal successors, (2746), 932 states have internal predecessors, (2746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:54,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 2746 transitions. [2022-11-20 19:59:54,642 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 2746 transitions. Word has length 36 [2022-11-20 19:59:54,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:54,642 INFO L495 AbstractCegarLoop]: Abstraction has 933 states and 2746 transitions. [2022-11-20 19:59:54,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:54,642 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 2746 transitions. [2022-11-20 19:59:54,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:54,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:54,644 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] [2022-11-20 19:59:54,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-11-20 19:59:54,644 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)] === [2022-11-20 19:59:54,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:54,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1823607444, now seen corresponding path program 37 times [2022-11-20 19:59:54,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:54,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986070243] [2022-11-20 19:59:54,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:54,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:55,534 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:55,534 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:55,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986070243] [2022-11-20 19:59:55,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986070243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:55,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:55,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:59:55,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040466448] [2022-11-20 19:59:55,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:55,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:55,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:55,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:55,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:55,536 INFO L87 Difference]: Start difference. First operand 933 states and 2746 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:56,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:56,351 INFO L93 Difference]: Finished difference Result 1075 states and 3050 transitions. [2022-11-20 19:59:56,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:59:56,351 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:56,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:56,353 INFO L225 Difference]: With dead ends: 1075 [2022-11-20 19:59:56,353 INFO L226 Difference]: Without dead ends: 1064 [2022-11-20 19:59:56,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2022-11-20 19:59:56,354 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 212 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:56,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 0 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:59:56,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2022-11-20 19:59:56,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 933. [2022-11-20 19:59:56,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 932 states have (on average 2.9463519313304722) internal successors, (2746), 932 states have internal predecessors, (2746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:56,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 2746 transitions. [2022-11-20 19:59:56,369 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 2746 transitions. Word has length 36 [2022-11-20 19:59:56,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:56,369 INFO L495 AbstractCegarLoop]: Abstraction has 933 states and 2746 transitions. [2022-11-20 19:59:56,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:56,369 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 2746 transitions. [2022-11-20 19:59:56,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:56,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:56,371 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] [2022-11-20 19:59:56,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-11-20 19:59:56,371 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)] === [2022-11-20 19:59:56,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:56,371 INFO L85 PathProgramCache]: Analyzing trace with hash 2083481032, now seen corresponding path program 38 times [2022-11-20 19:59:56,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:56,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119453010] [2022-11-20 19:59:56,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:56,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:57,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:57,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:57,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119453010] [2022-11-20 19:59:57,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119453010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:57,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:57,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 19:59:57,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192466473] [2022-11-20 19:59:57,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:57,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:59:57,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:57,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:59:57,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:59:57,284 INFO L87 Difference]: Start difference. First operand 933 states and 2746 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:58,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:58,060 INFO L93 Difference]: Finished difference Result 1086 states and 3058 transitions. [2022-11-20 19:59:58,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:59:58,060 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 19:59:58,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:58,063 INFO L225 Difference]: With dead ends: 1086 [2022-11-20 19:59:58,063 INFO L226 Difference]: Without dead ends: 1061 [2022-11-20 19:59:58,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2022-11-20 19:59:58,063 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 252 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:58,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 0 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 19:59:58,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-11-20 19:59:58,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 902. [2022-11-20 19:59:58,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 901 states have (on average 2.951165371809101) internal successors, (2659), 901 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:58,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 2659 transitions. [2022-11-20 19:59:58,080 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 2659 transitions. Word has length 36 [2022-11-20 19:59:58,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:58,080 INFO L495 AbstractCegarLoop]: Abstraction has 902 states and 2659 transitions. [2022-11-20 19:59:58,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:58,080 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 2659 transitions. [2022-11-20 19:59:58,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:58,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:58,081 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] [2022-11-20 19:59:58,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-11-20 19:59:58,081 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)] === [2022-11-20 19:59:58,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:58,082 INFO L85 PathProgramCache]: Analyzing trace with hash 2117162206, now seen corresponding path program 39 times [2022-11-20 19:59:58,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:58,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084489337] [2022-11-20 19:59:58,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:58,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:58,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:58,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:58,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084489337] [2022-11-20 19:59:58,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084489337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:58,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:58,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 19:59:58,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346743138] [2022-11-20 19:59:58,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:58,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 19:59:58,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:58,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 19:59:58,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:59:58,688 INFO L87 Difference]: Start difference. First operand 902 states and 2659 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) [2022-11-20 19:59:59,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:59:59,269 INFO L93 Difference]: Finished difference Result 1051 states and 2986 transitions. [2022-11-20 19:59:59,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:59:59,269 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 [2022-11-20 19:59:59,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:59:59,271 INFO L225 Difference]: With dead ends: 1051 [2022-11-20 19:59:59,271 INFO L226 Difference]: Without dead ends: 1042 [2022-11-20 19:59:59,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2022-11-20 19:59:59,271 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 213 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 19:59:59,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 0 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 19:59:59,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2022-11-20 19:59:59,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 916. [2022-11-20 19:59:59,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 915 states have (on average 2.946448087431694) internal successors, (2696), 915 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:59:59,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 2696 transitions. [2022-11-20 19:59:59,286 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 2696 transitions. Word has length 36 [2022-11-20 19:59:59,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:59:59,286 INFO L495 AbstractCegarLoop]: Abstraction has 916 states and 2696 transitions. [2022-11-20 19:59:59,286 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) [2022-11-20 19:59:59,286 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 2696 transitions. [2022-11-20 19:59:59,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 19:59:59,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:59:59,288 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] [2022-11-20 19:59:59,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-11-20 19:59:59,288 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)] === [2022-11-20 19:59:59,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:59:59,288 INFO L85 PathProgramCache]: Analyzing trace with hash 2080294154, now seen corresponding path program 40 times [2022-11-20 19:59:59,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:59:59,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473567442] [2022-11-20 19:59:59,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:59:59,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:59:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:59:59,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 19:59:59,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:59:59,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473567442] [2022-11-20 19:59:59,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473567442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:59:59,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:59:59,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 19:59:59,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834646777] [2022-11-20 19:59:59,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:59:59,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 19:59:59,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:59:59,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 19:59:59,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:59:59,978 INFO L87 Difference]: Start difference. First operand 916 states and 2696 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) [2022-11-20 20:00:00,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:00:00,664 INFO L93 Difference]: Finished difference Result 1053 states and 2988 transitions. [2022-11-20 20:00:00,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:00:00,665 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 [2022-11-20 20:00:00,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:00:00,667 INFO L225 Difference]: With dead ends: 1053 [2022-11-20 20:00:00,667 INFO L226 Difference]: Without dead ends: 1040 [2022-11-20 20:00:00,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-11-20 20:00:00,667 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 209 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:00:00,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 0 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:00:00,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2022-11-20 20:00:00,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 914. [2022-11-20 20:00:00,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 913 states have (on average 2.945235487404162) internal successors, (2689), 913 states have internal predecessors, (2689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:00:00,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 2689 transitions. [2022-11-20 20:00:00,683 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 2689 transitions. Word has length 36 [2022-11-20 20:00:00,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:00:00,683 INFO L495 AbstractCegarLoop]: Abstraction has 914 states and 2689 transitions. [2022-11-20 20:00:00,683 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) [2022-11-20 20:00:00,683 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 2689 transitions. [2022-11-20 20:00:00,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:00:00,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:00:00,686 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] [2022-11-20 20:00:00,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-11-20 20:00:00,686 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)] === [2022-11-20 20:00:00,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:00:00,686 INFO L85 PathProgramCache]: Analyzing trace with hash -843078260, now seen corresponding path program 41 times [2022-11-20 20:00:00,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:00:00,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459814673] [2022-11-20 20:00:00,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:00:00,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:00:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:00:01,464 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 20:00:01,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:00:01,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459814673] [2022-11-20 20:00:01,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459814673] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:00:01,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35067781] [2022-11-20 20:00:01,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 20:00:01,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:00:01,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:00:01,468 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:00:01,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 20:00:01,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-20 20:00:01,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:00:01,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 20:00:01,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:00:01,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:00:01,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-20 20:00:08,898 WARN L233 SmtUtils]: Spent 6.51s on a formula simplification. DAG size of input: 75 DAG size of output: 70 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:00:17,279 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:00:17,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 326 treesize of output 1792 [2022-11-20 20:03:40,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:03:40,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:03:40,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35067781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:03:40,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:03:40,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 21 [2022-11-20 20:03:40,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267426190] [2022-11-20 20:03:40,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:03:40,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 20:03:40,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:03:40,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 20:03:40,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-11-20 20:03:40,198 INFO L87 Difference]: Start difference. First operand 914 states and 2689 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) [2022-11-20 20:04:32,427 WARN L233 SmtUtils]: Spent 47.32s on a formula simplification. DAG size of input: 99 DAG size of output: 98 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:04:36,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:36,886 INFO L93 Difference]: Finished difference Result 1008 states and 2893 transitions. [2022-11-20 20:04:36,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:04:36,887 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 [2022-11-20 20:04:36,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:36,888 INFO L225 Difference]: With dead ends: 1008 [2022-11-20 20:04:36,888 INFO L226 Difference]: Without dead ends: 987 [2022-11-20 20:04:36,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 68.4s TimeCoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2022-11-20 20:04:36,889 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 63 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 291 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:36,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 0 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 205 Invalid, 0 Unknown, 291 Unchecked, 0.2s Time] [2022-11-20 20:04:36,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2022-11-20 20:04:36,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 930. [2022-11-20 20:04:36,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 929 states have (on average 2.938643702906351) internal successors, (2730), 929 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:36,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 2730 transitions. [2022-11-20 20:04:36,903 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 2730 transitions. Word has length 36 [2022-11-20 20:04:36,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:36,904 INFO L495 AbstractCegarLoop]: Abstraction has 930 states and 2730 transitions. [2022-11-20 20:04:36,904 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) [2022-11-20 20:04:36,904 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 2730 transitions. [2022-11-20 20:04:36,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:04:36,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:36,906 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] [2022-11-20 20:04:36,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 20:04:37,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657326a2-043b-4d46-95d3-9ce1d1e7e086/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2022-11-20 20:04:37,113 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)] === [2022-11-20 20:04:37,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:37,114 INFO L85 PathProgramCache]: Analyzing trace with hash -435021642, now seen corresponding path program 42 times [2022-11-20 20:04:37,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:04:37,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748591867] [2022-11-20 20:04:37,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:37,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:04:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:38,065 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:04:38,066 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:04:38,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748591867] [2022-11-20 20:04:38,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748591867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:04:38,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:04:38,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 20:04:38,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625462753] [2022-11-20 20:04:38,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:04:38,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 20:04:38,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:04:38,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 20:04:38,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-20 20:04:38,068 INFO L87 Difference]: Start difference. First operand 930 states and 2730 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:39,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:39,002 INFO L93 Difference]: Finished difference Result 1128 states and 3116 transitions. [2022-11-20 20:04:39,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:04:39,002 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 20:04:39,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:39,004 INFO L225 Difference]: With dead ends: 1128 [2022-11-20 20:04:39,004 INFO L226 Difference]: Without dead ends: 1110 [2022-11-20 20:04:39,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2022-11-20 20:04:39,005 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 241 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:39,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 0 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:04:39,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2022-11-20 20:04:39,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 935. [2022-11-20 20:04:39,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 934 states have (on average 2.937901498929336) internal successors, (2744), 934 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:39,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 2744 transitions. [2022-11-20 20:04:39,027 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 2744 transitions. Word has length 36 [2022-11-20 20:04:39,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:39,027 INFO L495 AbstractCegarLoop]: Abstraction has 935 states and 2744 transitions. [2022-11-20 20:04:39,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:39,028 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 2744 transitions. [2022-11-20 20:04:39,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:04:39,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:39,029 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] [2022-11-20 20:04:39,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-11-20 20:04:39,030 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)] === [2022-11-20 20:04:39,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:39,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1586803998, now seen corresponding path program 43 times [2022-11-20 20:04:39,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:04:39,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863998373] [2022-11-20 20:04:39,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:39,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:04:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:39,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:04:39,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:04:39,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863998373] [2022-11-20 20:04:39,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863998373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:04:39,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:04:39,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 20:04:39,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020550766] [2022-11-20 20:04:39,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:04:39,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 20:04:39,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:04:39,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 20:04:39,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-20 20:04:39,752 INFO L87 Difference]: Start difference. First operand 935 states and 2744 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:40,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:40,428 INFO L93 Difference]: Finished difference Result 1118 states and 3096 transitions. [2022-11-20 20:04:40,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:04:40,429 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 20:04:40,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:40,431 INFO L225 Difference]: With dead ends: 1118 [2022-11-20 20:04:40,431 INFO L226 Difference]: Without dead ends: 1103 [2022-11-20 20:04:40,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2022-11-20 20:04:40,431 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 255 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:40,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 0 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:04:40,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2022-11-20 20:04:40,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 937. [2022-11-20 20:04:40,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 936 states have (on average 2.9337606837606836) internal successors, (2746), 936 states have internal predecessors, (2746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:40,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 2746 transitions. [2022-11-20 20:04:40,447 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 2746 transitions. Word has length 36 [2022-11-20 20:04:40,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:40,448 INFO L495 AbstractCegarLoop]: Abstraction has 937 states and 2746 transitions. [2022-11-20 20:04:40,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:40,448 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 2746 transitions. [2022-11-20 20:04:40,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:04:40,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:40,449 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] [2022-11-20 20:04:40,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-11-20 20:04:40,450 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)] === [2022-11-20 20:04:40,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:40,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1353967454, now seen corresponding path program 44 times [2022-11-20 20:04:40,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:04:40,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273442191] [2022-11-20 20:04:40,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:40,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:04:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:41,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:04:41,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:04:41,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273442191] [2022-11-20 20:04:41,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273442191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:04:41,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:04:41,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 20:04:41,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225619739] [2022-11-20 20:04:41,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:04:41,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 20:04:41,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:04:41,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 20:04:41,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-20 20:04:41,217 INFO L87 Difference]: Start difference. First operand 937 states and 2746 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:41,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:41,903 INFO L93 Difference]: Finished difference Result 1105 states and 3079 transitions. [2022-11-20 20:04:41,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:04:41,904 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 20:04:41,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:41,905 INFO L225 Difference]: With dead ends: 1105 [2022-11-20 20:04:41,906 INFO L226 Difference]: Without dead ends: 1090 [2022-11-20 20:04:41,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2022-11-20 20:04:41,906 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 163 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:41,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 0 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:04:41,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-11-20 20:04:41,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 937. [2022-11-20 20:04:41,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 936 states have (on average 2.9337606837606836) internal successors, (2746), 936 states have internal predecessors, (2746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:41,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 2746 transitions. [2022-11-20 20:04:41,921 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 2746 transitions. Word has length 36 [2022-11-20 20:04:41,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:41,922 INFO L495 AbstractCegarLoop]: Abstraction has 937 states and 2746 transitions. [2022-11-20 20:04:41,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:41,922 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 2746 transitions. [2022-11-20 20:04:41,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:04:41,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:41,923 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] [2022-11-20 20:04:41,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-11-20 20:04:41,923 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)] === [2022-11-20 20:04:41,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:41,924 INFO L85 PathProgramCache]: Analyzing trace with hash -946105204, now seen corresponding path program 45 times [2022-11-20 20:04:41,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:04:41,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970621705] [2022-11-20 20:04:41,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:41,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:04:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:42,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:04:42,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:04:42,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970621705] [2022-11-20 20:04:42,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970621705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:04:42,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:04:42,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 20:04:42,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489518431] [2022-11-20 20:04:42,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:04:42,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 20:04:42,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:04:42,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 20:04:42,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:04:42,816 INFO L87 Difference]: Start difference. First operand 937 states and 2746 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) [2022-11-20 20:04:43,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:43,286 INFO L93 Difference]: Finished difference Result 965 states and 2800 transitions. [2022-11-20 20:04:43,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:04:43,287 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 [2022-11-20 20:04:43,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:43,289 INFO L225 Difference]: With dead ends: 965 [2022-11-20 20:04:43,289 INFO L226 Difference]: Without dead ends: 953 [2022-11-20 20:04:43,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2022-11-20 20:04:43,289 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 164 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:43,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 0 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:04:43,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2022-11-20 20:04:43,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 945. [2022-11-20 20:04:43,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 944 states have (on average 2.9322033898305087) internal successors, (2768), 944 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:43,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 2768 transitions. [2022-11-20 20:04:43,305 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 2768 transitions. Word has length 36 [2022-11-20 20:04:43,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:43,305 INFO L495 AbstractCegarLoop]: Abstraction has 945 states and 2768 transitions. [2022-11-20 20:04:43,305 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) [2022-11-20 20:04:43,305 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 2768 transitions. [2022-11-20 20:04:43,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:04:43,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:43,308 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] [2022-11-20 20:04:43,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-11-20 20:04:43,308 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)] === [2022-11-20 20:04:43,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:43,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1409260106, now seen corresponding path program 46 times [2022-11-20 20:04:43,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:04:43,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212578216] [2022-11-20 20:04:43,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:43,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:04:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:43,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:04:43,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:04:43,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212578216] [2022-11-20 20:04:43,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212578216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:04:43,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:04:43,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 20:04:43,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688508525] [2022-11-20 20:04:43,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:04:43,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 20:04:43,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:04:43,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 20:04:43,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:04:43,980 INFO L87 Difference]: Start difference. First operand 945 states and 2768 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) [2022-11-20 20:04:44,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:44,505 INFO L93 Difference]: Finished difference Result 976 states and 2808 transitions. [2022-11-20 20:04:44,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:04:44,505 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 [2022-11-20 20:04:44,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:44,507 INFO L225 Difference]: With dead ends: 976 [2022-11-20 20:04:44,507 INFO L226 Difference]: Without dead ends: 956 [2022-11-20 20:04:44,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2022-11-20 20:04:44,507 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 179 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:44,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 0 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:04:44,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2022-11-20 20:04:44,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 940. [2022-11-20 20:04:44,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 939 states have (on average 2.9275825346112887) internal successors, (2749), 939 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:44,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 2749 transitions. [2022-11-20 20:04:44,520 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 2749 transitions. Word has length 36 [2022-11-20 20:04:44,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:44,520 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 2749 transitions. [2022-11-20 20:04:44,521 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) [2022-11-20 20:04:44,521 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 2749 transitions. [2022-11-20 20:04:44,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:04:44,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:44,522 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] [2022-11-20 20:04:44,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-11-20 20:04:44,522 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)] === [2022-11-20 20:04:44,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:44,523 INFO L85 PathProgramCache]: Analyzing trace with hash -860528246, now seen corresponding path program 47 times [2022-11-20 20:04:44,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:04:44,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463976210] [2022-11-20 20:04:44,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:44,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:04:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:45,136 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:04:45,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:04:45,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463976210] [2022-11-20 20:04:45,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463976210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:04:45,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:04:45,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 20:04:45,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740172733] [2022-11-20 20:04:45,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:04:45,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 20:04:45,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:04:45,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 20:04:45,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:04:45,137 INFO L87 Difference]: Start difference. First operand 940 states and 2749 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) [2022-11-20 20:04:45,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:45,630 INFO L93 Difference]: Finished difference Result 1019 states and 2903 transitions. [2022-11-20 20:04:45,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 20:04:45,630 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 [2022-11-20 20:04:45,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:45,632 INFO L225 Difference]: With dead ends: 1019 [2022-11-20 20:04:45,632 INFO L226 Difference]: Without dead ends: 993 [2022-11-20 20:04:45,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2022-11-20 20:04:45,633 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 197 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:45,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 0 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:04:45,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2022-11-20 20:04:45,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 940. [2022-11-20 20:04:45,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 939 states have (on average 2.92332268370607) internal successors, (2745), 939 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:45,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 2745 transitions. [2022-11-20 20:04:45,645 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 2745 transitions. Word has length 36 [2022-11-20 20:04:45,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:45,646 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 2745 transitions. [2022-11-20 20:04:45,646 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) [2022-11-20 20:04:45,646 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 2745 transitions. [2022-11-20 20:04:45,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:04:45,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:45,647 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] [2022-11-20 20:04:45,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-11-20 20:04:45,647 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:04:45,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:45,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1808679454, now seen corresponding path program 48 times [2022-11-20 20:04:45,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:04:45,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84249700] [2022-11-20 20:04:45,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:45,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:04:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:46,483 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:04:46,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:04:46,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84249700] [2022-11-20 20:04:46,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84249700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:04:46,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:04:46,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 20:04:46,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547548167] [2022-11-20 20:04:46,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:04:46,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 20:04:46,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:04:46,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 20:04:46,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:04:46,485 INFO L87 Difference]: Start difference. First operand 940 states and 2745 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) [2022-11-20 20:04:46,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:46,931 INFO L93 Difference]: Finished difference Result 953 states and 2764 transitions. [2022-11-20 20:04:46,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:04:46,931 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 [2022-11-20 20:04:46,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:46,933 INFO L225 Difference]: With dead ends: 953 [2022-11-20 20:04:46,933 INFO L226 Difference]: Without dead ends: 944 [2022-11-20 20:04:46,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2022-11-20 20:04:46,934 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 121 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:46,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 0 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:04:46,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2022-11-20 20:04:46,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 942. [2022-11-20 20:04:46,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 2.920297555791711) internal successors, (2748), 941 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:46,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2748 transitions. [2022-11-20 20:04:46,950 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2748 transitions. Word has length 36 [2022-11-20 20:04:46,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:46,950 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 2748 transitions. [2022-11-20 20:04:46,951 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) [2022-11-20 20:04:46,951 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2748 transitions. [2022-11-20 20:04:46,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:04:46,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:46,953 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] [2022-11-20 20:04:46,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-11-20 20:04:46,953 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:04:46,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:46,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1771811402, now seen corresponding path program 49 times [2022-11-20 20:04:46,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:04:46,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114148693] [2022-11-20 20:04:46,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:46,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:04:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:04:47,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:04:47,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114148693] [2022-11-20 20:04:47,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114148693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:04:47,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:04:47,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 20:04:47,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844678312] [2022-11-20 20:04:47,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:04:47,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 20:04:47,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:04:47,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 20:04:47,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:04:47,548 INFO L87 Difference]: Start difference. First operand 942 states and 2748 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) [2022-11-20 20:04:48,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:48,040 INFO L93 Difference]: Finished difference Result 955 states and 2766 transitions. [2022-11-20 20:04:48,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:04:48,040 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 [2022-11-20 20:04:48,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:48,042 INFO L225 Difference]: With dead ends: 955 [2022-11-20 20:04:48,042 INFO L226 Difference]: Without dead ends: 939 [2022-11-20 20:04:48,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 20:04:48,042 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 121 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:48,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 0 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:04:48,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2022-11-20 20:04:48,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 937. [2022-11-20 20:04:48,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 936 states have (on average 2.9166666666666665) internal successors, (2730), 936 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:48,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 2730 transitions. [2022-11-20 20:04:48,054 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 2730 transitions. Word has length 36 [2022-11-20 20:04:48,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:48,055 INFO L495 AbstractCegarLoop]: Abstraction has 937 states and 2730 transitions. [2022-11-20 20:04:48,055 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) [2022-11-20 20:04:48,055 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 2730 transitions. [2022-11-20 20:04:48,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:04:48,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:48,056 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] [2022-11-20 20:04:48,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-11-20 20:04:48,056 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:04:48,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:48,057 INFO L85 PathProgramCache]: Analyzing trace with hash 298911328, now seen corresponding path program 50 times [2022-11-20 20:04:48,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:04:48,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775191257] [2022-11-20 20:04:48,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:48,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:04:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:48,793 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:04:48,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:04:48,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775191257] [2022-11-20 20:04:48,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775191257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:04:48,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:04:48,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 20:04:48,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216599821] [2022-11-20 20:04:48,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:04:48,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 20:04:48,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:04:48,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 20:04:48,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-20 20:04:48,794 INFO L87 Difference]: Start difference. First operand 937 states and 2730 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:49,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:49,474 INFO L93 Difference]: Finished difference Result 1077 states and 3008 transitions. [2022-11-20 20:04:49,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:04:49,475 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 20:04:49,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:49,477 INFO L225 Difference]: With dead ends: 1077 [2022-11-20 20:04:49,477 INFO L226 Difference]: Without dead ends: 1066 [2022-11-20 20:04:49,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2022-11-20 20:04:49,477 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 244 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:49,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 0 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:04:49,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2022-11-20 20:04:49,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 941. [2022-11-20 20:04:49,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 940 states have (on average 2.9106382978723406) internal successors, (2736), 940 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:49,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 2736 transitions. [2022-11-20 20:04:49,490 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 2736 transitions. Word has length 36 [2022-11-20 20:04:49,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:49,491 INFO L495 AbstractCegarLoop]: Abstraction has 941 states and 2736 transitions. [2022-11-20 20:04:49,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:49,491 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 2736 transitions. [2022-11-20 20:04:49,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:04:49,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:49,492 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] [2022-11-20 20:04:49,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-11-20 20:04:49,492 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:04:49,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:49,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1209520060, now seen corresponding path program 51 times [2022-11-20 20:04:49,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:04:49,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812265997] [2022-11-20 20:04:49,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:49,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:04:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:50,281 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:04:50,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:04:50,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812265997] [2022-11-20 20:04:50,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812265997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:04:50,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:04:50,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 20:04:50,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94687494] [2022-11-20 20:04:50,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:04:50,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 20:04:50,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:04:50,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 20:04:50,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-20 20:04:50,282 INFO L87 Difference]: Start difference. First operand 941 states and 2736 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:50,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:50,986 INFO L93 Difference]: Finished difference Result 1088 states and 3016 transitions. [2022-11-20 20:04:50,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:04:50,987 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 20:04:50,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:50,988 INFO L225 Difference]: With dead ends: 1088 [2022-11-20 20:04:50,988 INFO L226 Difference]: Without dead ends: 1065 [2022-11-20 20:04:50,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2022-11-20 20:04:50,989 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 269 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:50,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 0 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:04:50,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2022-11-20 20:04:51,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 934. [2022-11-20 20:04:51,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 933 states have (on average 2.917470525187567) internal successors, (2722), 933 states have internal predecessors, (2722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:51,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 2722 transitions. [2022-11-20 20:04:51,003 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 2722 transitions. Word has length 36 [2022-11-20 20:04:51,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:51,003 INFO L495 AbstractCegarLoop]: Abstraction has 934 states and 2722 transitions. [2022-11-20 20:04:51,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:51,003 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 2722 transitions. [2022-11-20 20:04:51,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:04:51,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:51,005 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] [2022-11-20 20:04:51,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-11-20 20:04:51,005 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:04:51,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:51,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1085782476, now seen corresponding path program 52 times [2022-11-20 20:04:51,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:04:51,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802782247] [2022-11-20 20:04:51,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:51,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:04:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:51,589 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:04:51,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:04:51,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802782247] [2022-11-20 20:04:51,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802782247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:04:51,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:04:51,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 20:04:51,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303303046] [2022-11-20 20:04:51,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:04:51,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 20:04:51,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:04:51,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 20:04:51,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-20 20:04:51,590 INFO L87 Difference]: Start difference. First operand 934 states and 2722 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:52,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:52,274 INFO L93 Difference]: Finished difference Result 1077 states and 2995 transitions. [2022-11-20 20:04:52,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:04:52,275 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 20:04:52,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:52,276 INFO L225 Difference]: With dead ends: 1077 [2022-11-20 20:04:52,277 INFO L226 Difference]: Without dead ends: 1066 [2022-11-20 20:04:52,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2022-11-20 20:04:52,277 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 222 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:52,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 0 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:04:52,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2022-11-20 20:04:52,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 936. [2022-11-20 20:04:52,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 935 states have (on average 2.914438502673797) internal successors, (2725), 935 states have internal predecessors, (2725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:52,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 2725 transitions. [2022-11-20 20:04:52,291 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 2725 transitions. Word has length 36 [2022-11-20 20:04:52,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:52,292 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 2725 transitions. [2022-11-20 20:04:52,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:52,292 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 2725 transitions. [2022-11-20 20:04:52,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:04:52,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:52,293 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] [2022-11-20 20:04:52,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-11-20 20:04:52,293 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:04:52,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:52,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1412135220, now seen corresponding path program 53 times [2022-11-20 20:04:52,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:04:52,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011463144] [2022-11-20 20:04:52,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:52,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:04:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:52,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:04:52,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:04:52,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011463144] [2022-11-20 20:04:52,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011463144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:04:52,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:04:52,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 20:04:52,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181535308] [2022-11-20 20:04:52,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:04:52,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 20:04:52,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:04:52,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 20:04:52,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:04:52,836 INFO L87 Difference]: Start difference. First operand 936 states and 2725 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) [2022-11-20 20:04:53,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:53,287 INFO L93 Difference]: Finished difference Result 961 states and 2773 transitions. [2022-11-20 20:04:53,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:04:53,287 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 [2022-11-20 20:04:53,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:53,289 INFO L225 Difference]: With dead ends: 961 [2022-11-20 20:04:53,289 INFO L226 Difference]: Without dead ends: 952 [2022-11-20 20:04:53,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-20 20:04:53,289 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 130 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:53,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 0 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:04:53,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2022-11-20 20:04:53,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 946. [2022-11-20 20:04:53,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 945 states have (on average 2.9100529100529102) internal successors, (2750), 945 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:53,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 2750 transitions. [2022-11-20 20:04:53,302 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 2750 transitions. Word has length 36 [2022-11-20 20:04:53,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:53,302 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 2750 transitions. [2022-11-20 20:04:53,302 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) [2022-11-20 20:04:53,302 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 2750 transitions. [2022-11-20 20:04:53,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:04:53,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:53,303 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] [2022-11-20 20:04:53,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-11-20 20:04:53,304 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:04:53,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:53,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1449003272, now seen corresponding path program 54 times [2022-11-20 20:04:53,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:04:53,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066272760] [2022-11-20 20:04:53,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:53,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:04:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:53,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:04:53,916 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:04:53,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066272760] [2022-11-20 20:04:53,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066272760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:04:53,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:04:53,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 20:04:53,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036999566] [2022-11-20 20:04:53,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:04:53,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 20:04:53,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:04:53,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 20:04:53,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-20 20:04:53,918 INFO L87 Difference]: Start difference. First operand 946 states and 2750 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:54,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:54,570 INFO L93 Difference]: Finished difference Result 1073 states and 3000 transitions. [2022-11-20 20:04:54,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:04:54,570 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 20:04:54,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:54,572 INFO L225 Difference]: With dead ends: 1073 [2022-11-20 20:04:54,572 INFO L226 Difference]: Without dead ends: 1054 [2022-11-20 20:04:54,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2022-11-20 20:04:54,573 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 206 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:54,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 0 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:04:54,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2022-11-20 20:04:54,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 940. [2022-11-20 20:04:54,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 939 states have (on average 2.91160809371672) internal successors, (2734), 939 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:54,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 2734 transitions. [2022-11-20 20:04:54,588 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 2734 transitions. Word has length 36 [2022-11-20 20:04:54,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:54,588 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 2734 transitions. [2022-11-20 20:04:54,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:54,588 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 2734 transitions. [2022-11-20 20:04:54,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:04:54,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:54,590 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] [2022-11-20 20:04:54,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-11-20 20:04:54,590 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:04:54,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:54,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1056155120, now seen corresponding path program 55 times [2022-11-20 20:04:54,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:04:54,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110529759] [2022-11-20 20:04:54,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:54,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:04:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:55,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:04:55,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:04:55,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110529759] [2022-11-20 20:04:55,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110529759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:04:55,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:04:55,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 20:04:55,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356829208] [2022-11-20 20:04:55,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:04:55,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 20:04:55,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:04:55,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 20:04:55,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:04:55,135 INFO L87 Difference]: Start difference. First operand 940 states and 2734 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) [2022-11-20 20:04:55,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:55,785 INFO L93 Difference]: Finished difference Result 1127 states and 3116 transitions. [2022-11-20 20:04:55,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:04:55,785 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 [2022-11-20 20:04:55,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:55,787 INFO L225 Difference]: With dead ends: 1127 [2022-11-20 20:04:55,787 INFO L226 Difference]: Without dead ends: 1118 [2022-11-20 20:04:55,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-11-20 20:04:55,787 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 195 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:55,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 0 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:04:55,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2022-11-20 20:04:55,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 964. [2022-11-20 20:04:55,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 963 states have (on average 2.9096573208722742) internal successors, (2802), 963 states have internal predecessors, (2802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:55,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 2802 transitions. [2022-11-20 20:04:55,804 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 2802 transitions. Word has length 36 [2022-11-20 20:04:55,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:55,804 INFO L495 AbstractCegarLoop]: Abstraction has 964 states and 2802 transitions. [2022-11-20 20:04:55,804 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) [2022-11-20 20:04:55,804 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 2802 transitions. [2022-11-20 20:04:55,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:04:55,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:55,805 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] [2022-11-20 20:04:55,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-11-20 20:04:55,806 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:04:55,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:55,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1019287068, now seen corresponding path program 56 times [2022-11-20 20:04:55,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:04:55,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090860190] [2022-11-20 20:04:55,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:55,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:04:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:56,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:04:56,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:04:56,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090860190] [2022-11-20 20:04:56,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090860190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:04:56,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:04:56,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 20:04:56,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355031901] [2022-11-20 20:04:56,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:04:56,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 20:04:56,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:04:56,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 20:04:56,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:04:56,279 INFO L87 Difference]: Start difference. First operand 964 states and 2802 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) [2022-11-20 20:04:56,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:56,908 INFO L93 Difference]: Finished difference Result 1129 states and 3118 transitions. [2022-11-20 20:04:56,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:04:56,908 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 [2022-11-20 20:04:56,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:56,910 INFO L225 Difference]: With dead ends: 1129 [2022-11-20 20:04:56,910 INFO L226 Difference]: Without dead ends: 1116 [2022-11-20 20:04:56,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2022-11-20 20:04:56,910 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 205 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:56,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 0 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:04:56,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2022-11-20 20:04:56,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 954. [2022-11-20 20:04:56,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 953 states have (on average 2.9097586568730325) internal successors, (2773), 953 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:56,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 2773 transitions. [2022-11-20 20:04:56,924 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 2773 transitions. Word has length 36 [2022-11-20 20:04:56,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:56,924 INFO L495 AbstractCegarLoop]: Abstraction has 954 states and 2773 transitions. [2022-11-20 20:04:56,924 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) [2022-11-20 20:04:56,925 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 2773 transitions. [2022-11-20 20:04:56,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:04:56,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:56,926 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] [2022-11-20 20:04:56,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-11-20 20:04:56,926 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:04:56,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:56,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1904085346, now seen corresponding path program 57 times [2022-11-20 20:04:56,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:04:56,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728916862] [2022-11-20 20:04:56,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:56,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:04:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:04:57,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:04:57,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728916862] [2022-11-20 20:04:57,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728916862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:04:57,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:04:57,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 20:04:57,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976119981] [2022-11-20 20:04:57,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:04:57,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 20:04:57,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:04:57,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 20:04:57,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:04:57,558 INFO L87 Difference]: Start difference. First operand 954 states and 2773 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) [2022-11-20 20:04:58,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:58,306 INFO L93 Difference]: Finished difference Result 1159 states and 3168 transitions. [2022-11-20 20:04:58,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:04:58,307 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 [2022-11-20 20:04:58,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:58,309 INFO L225 Difference]: With dead ends: 1159 [2022-11-20 20:04:58,309 INFO L226 Difference]: Without dead ends: 1142 [2022-11-20 20:04:58,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-11-20 20:04:58,309 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 193 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:58,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 0 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:04:58,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2022-11-20 20:04:58,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 960. [2022-11-20 20:04:58,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 959 states have (on average 2.9051094890510947) internal successors, (2786), 959 states have internal predecessors, (2786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:58,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 2786 transitions. [2022-11-20 20:04:58,324 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 2786 transitions. Word has length 36 [2022-11-20 20:04:58,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:58,325 INFO L495 AbstractCegarLoop]: Abstraction has 960 states and 2786 transitions. [2022-11-20 20:04:58,325 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) [2022-11-20 20:04:58,325 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 2786 transitions. [2022-11-20 20:04:58,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:04:58,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:58,326 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] [2022-11-20 20:04:58,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-11-20 20:04:58,326 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:04:58,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:58,327 INFO L85 PathProgramCache]: Analyzing trace with hash 856917598, now seen corresponding path program 58 times [2022-11-20 20:04:58,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:04:58,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947929296] [2022-11-20 20:04:58,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:58,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:04:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:58,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:04:58,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:04:58,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947929296] [2022-11-20 20:04:58,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947929296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:04:58,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:04:58,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 20:04:58,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699066220] [2022-11-20 20:04:58,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:04:58,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 20:04:58,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:04:58,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 20:04:58,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:04:58,724 INFO L87 Difference]: Start difference. First operand 960 states and 2786 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) [2022-11-20 20:04:59,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:04:59,144 INFO L93 Difference]: Finished difference Result 1001 states and 2847 transitions. [2022-11-20 20:04:59,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:04:59,145 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 [2022-11-20 20:04:59,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:04:59,147 INFO L225 Difference]: With dead ends: 1001 [2022-11-20 20:04:59,147 INFO L226 Difference]: Without dead ends: 982 [2022-11-20 20:04:59,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 20:04:59,147 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 63 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:04:59,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 0 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:04:59,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2022-11-20 20:04:59,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 966. [2022-11-20 20:04:59,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 965 states have (on average 2.8860103626943006) internal successors, (2785), 965 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:04:59,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 2785 transitions. [2022-11-20 20:04:59,160 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 2785 transitions. Word has length 36 [2022-11-20 20:04:59,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:04:59,161 INFO L495 AbstractCegarLoop]: Abstraction has 966 states and 2785 transitions. [2022-11-20 20:04:59,161 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) [2022-11-20 20:04:59,161 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 2785 transitions. [2022-11-20 20:04:59,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:04:59,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:04:59,162 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] [2022-11-20 20:04:59,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-11-20 20:04:59,163 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:04:59,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:04:59,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1641000098, now seen corresponding path program 59 times [2022-11-20 20:04:59,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:04:59,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966698340] [2022-11-20 20:04:59,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:04:59,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:04:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:04:59,657 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:04:59,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:04:59,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966698340] [2022-11-20 20:04:59,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966698340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:04:59,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:04:59,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 20:04:59,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777246928] [2022-11-20 20:04:59,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:04:59,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 20:04:59,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:04:59,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 20:04:59,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:04:59,659 INFO L87 Difference]: Start difference. First operand 966 states and 2785 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) [2022-11-20 20:05:00,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:00,318 INFO L93 Difference]: Finished difference Result 1121 states and 3080 transitions. [2022-11-20 20:05:00,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:05:00,319 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 [2022-11-20 20:05:00,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:00,320 INFO L225 Difference]: With dead ends: 1121 [2022-11-20 20:05:00,320 INFO L226 Difference]: Without dead ends: 1112 [2022-11-20 20:05:00,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2022-11-20 20:05:00,321 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 167 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:00,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 0 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:05:00,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2022-11-20 20:05:00,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 968. [2022-11-20 20:05:00,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 967 states have (on average 2.8831437435367113) internal successors, (2788), 967 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:00,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 2788 transitions. [2022-11-20 20:05:00,337 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 2788 transitions. Word has length 36 [2022-11-20 20:05:00,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:00,337 INFO L495 AbstractCegarLoop]: Abstraction has 968 states and 2788 transitions. [2022-11-20 20:05:00,337 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) [2022-11-20 20:05:00,337 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 2788 transitions. [2022-11-20 20:05:00,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:00,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:00,339 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] [2022-11-20 20:05:00,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-11-20 20:05:00,339 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:00,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:00,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1677868150, now seen corresponding path program 60 times [2022-11-20 20:05:00,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:00,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934077098] [2022-11-20 20:05:00,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:00,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:00,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:00,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:00,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934077098] [2022-11-20 20:05:00,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934077098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:00,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:00,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 20:05:00,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948269865] [2022-11-20 20:05:00,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:00,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 20:05:00,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:00,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 20:05:00,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:05:00,816 INFO L87 Difference]: Start difference. First operand 968 states and 2788 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) [2022-11-20 20:05:01,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:01,403 INFO L93 Difference]: Finished difference Result 1123 states and 3082 transitions. [2022-11-20 20:05:01,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:05:01,403 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 [2022-11-20 20:05:01,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:01,405 INFO L225 Difference]: With dead ends: 1123 [2022-11-20 20:05:01,405 INFO L226 Difference]: Without dead ends: 1102 [2022-11-20 20:05:01,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-11-20 20:05:01,406 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 192 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:01,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 0 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:05:01,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2022-11-20 20:05:01,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 960. [2022-11-20 20:05:01,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 959 states have (on average 2.883211678832117) internal successors, (2765), 959 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:01,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 2765 transitions. [2022-11-20 20:05:01,420 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 2765 transitions. Word has length 36 [2022-11-20 20:05:01,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:01,420 INFO L495 AbstractCegarLoop]: Abstraction has 960 states and 2765 transitions. [2022-11-20 20:05:01,420 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) [2022-11-20 20:05:01,420 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 2765 transitions. [2022-11-20 20:05:01,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:01,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:01,422 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] [2022-11-20 20:05:01,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-11-20 20:05:01,422 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:01,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:01,422 INFO L85 PathProgramCache]: Analyzing trace with hash 168690600, now seen corresponding path program 61 times [2022-11-20 20:05:01,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:01,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346743308] [2022-11-20 20:05:01,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:01,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:01,884 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:01,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:01,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346743308] [2022-11-20 20:05:01,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346743308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:01,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:01,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 20:05:01,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741489190] [2022-11-20 20:05:01,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:01,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:05:01,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:01,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:05:01,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:05:01,885 INFO L87 Difference]: Start difference. First operand 960 states and 2765 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:02,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:02,362 INFO L93 Difference]: Finished difference Result 983 states and 2801 transitions. [2022-11-20 20:05:02,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:05:02,362 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 20:05:02,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:02,364 INFO L225 Difference]: With dead ends: 983 [2022-11-20 20:05:02,364 INFO L226 Difference]: Without dead ends: 974 [2022-11-20 20:05:02,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:05:02,364 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:02,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 0 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:05:02,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2022-11-20 20:05:02,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 962. [2022-11-20 20:05:02,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 961 states have (on average 2.8803329864724247) internal successors, (2768), 961 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:02,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 2768 transitions. [2022-11-20 20:05:02,378 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 2768 transitions. Word has length 36 [2022-11-20 20:05:02,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:02,378 INFO L495 AbstractCegarLoop]: Abstraction has 962 states and 2768 transitions. [2022-11-20 20:05:02,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:02,378 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 2768 transitions. [2022-11-20 20:05:02,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:02,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:02,379 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] [2022-11-20 20:05:02,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-11-20 20:05:02,380 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:02,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:02,380 INFO L85 PathProgramCache]: Analyzing trace with hash 131822548, now seen corresponding path program 62 times [2022-11-20 20:05:02,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:02,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089703129] [2022-11-20 20:05:02,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:02,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:02,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:02,776 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:02,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089703129] [2022-11-20 20:05:02,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089703129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:02,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:02,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 20:05:02,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321494303] [2022-11-20 20:05:02,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:02,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:05:02,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:02,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:05:02,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:05:02,780 INFO L87 Difference]: Start difference. First operand 962 states and 2768 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:03,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:03,175 INFO L93 Difference]: Finished difference Result 981 states and 2796 transitions. [2022-11-20 20:05:03,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:05:03,176 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 20:05:03,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:03,177 INFO L225 Difference]: With dead ends: 981 [2022-11-20 20:05:03,177 INFO L226 Difference]: Without dead ends: 966 [2022-11-20 20:05:03,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:05:03,178 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 50 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:03,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 0 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:05:03,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-11-20 20:05:03,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 960. [2022-11-20 20:05:03,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 959 states have (on average 2.8790406673618354) internal successors, (2761), 959 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:03,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 2761 transitions. [2022-11-20 20:05:03,189 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 2761 transitions. Word has length 36 [2022-11-20 20:05:03,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:03,190 INFO L495 AbstractCegarLoop]: Abstraction has 960 states and 2761 transitions. [2022-11-20 20:05:03,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:03,190 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 2761 transitions. [2022-11-20 20:05:03,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:03,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:03,191 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] [2022-11-20 20:05:03,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-11-20 20:05:03,192 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:03,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:03,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1130153118, now seen corresponding path program 63 times [2022-11-20 20:05:03,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:03,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521141229] [2022-11-20 20:05:03,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:03,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:03,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:03,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:03,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521141229] [2022-11-20 20:05:03,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521141229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:03,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:03,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 20:05:03,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135038068] [2022-11-20 20:05:03,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:03,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:05:03,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:03,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:05:03,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:05:03,561 INFO L87 Difference]: Start difference. First operand 960 states and 2761 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:03,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:03,949 INFO L93 Difference]: Finished difference Result 1039 states and 2921 transitions. [2022-11-20 20:05:03,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:05:03,949 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 20:05:03,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:03,951 INFO L225 Difference]: With dead ends: 1039 [2022-11-20 20:05:03,951 INFO L226 Difference]: Without dead ends: 1030 [2022-11-20 20:05:03,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:05:03,952 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 64 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:03,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 0 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:05:03,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-11-20 20:05:03,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 984. [2022-11-20 20:05:03,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 983 states have (on average 2.8779247202441507) internal successors, (2829), 983 states have internal predecessors, (2829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:03,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 2829 transitions. [2022-11-20 20:05:03,964 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 2829 transitions. Word has length 36 [2022-11-20 20:05:03,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:03,964 INFO L495 AbstractCegarLoop]: Abstraction has 984 states and 2829 transitions. [2022-11-20 20:05:03,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:03,965 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 2829 transitions. [2022-11-20 20:05:03,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:03,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:03,966 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] [2022-11-20 20:05:03,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-11-20 20:05:03,966 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:03,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:03,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1093285066, now seen corresponding path program 64 times [2022-11-20 20:05:03,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:03,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111653938] [2022-11-20 20:05:03,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:03,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:04,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:04,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:04,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111653938] [2022-11-20 20:05:04,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111653938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:04,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:04,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 20:05:04,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633508238] [2022-11-20 20:05:04,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:04,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:05:04,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:04,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:05:04,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:05:04,331 INFO L87 Difference]: Start difference. First operand 984 states and 2829 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:04,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:04,731 INFO L93 Difference]: Finished difference Result 1041 states and 2923 transitions. [2022-11-20 20:05:04,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:05:04,731 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 20:05:04,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:04,733 INFO L225 Difference]: With dead ends: 1041 [2022-11-20 20:05:04,733 INFO L226 Difference]: Without dead ends: 1028 [2022-11-20 20:05:04,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:05:04,733 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:04,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:05:04,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2022-11-20 20:05:04,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 974. [2022-11-20 20:05:04,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 973 states have (on average 2.8776978417266186) internal successors, (2800), 973 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:04,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 2800 transitions. [2022-11-20 20:05:04,746 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 2800 transitions. Word has length 36 [2022-11-20 20:05:04,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:04,746 INFO L495 AbstractCegarLoop]: Abstraction has 974 states and 2800 transitions. [2022-11-20 20:05:04,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:04,746 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 2800 transitions. [2022-11-20 20:05:04,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:04,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:04,747 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] [2022-11-20 20:05:04,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-11-20 20:05:04,748 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:04,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:04,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1830087348, now seen corresponding path program 65 times [2022-11-20 20:05:04,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:04,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994926328] [2022-11-20 20:05:04,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:04,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:05,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:05,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:05,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994926328] [2022-11-20 20:05:05,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994926328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:05,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:05,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 20:05:05,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806177958] [2022-11-20 20:05:05,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:05,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:05:05,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:05,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:05:05,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:05:05,177 INFO L87 Difference]: Start difference. First operand 974 states and 2800 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:05,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:05,685 INFO L93 Difference]: Finished difference Result 1039 states and 2916 transitions. [2022-11-20 20:05:05,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:05:05,686 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 20:05:05,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:05,687 INFO L225 Difference]: With dead ends: 1039 [2022-11-20 20:05:05,688 INFO L226 Difference]: Without dead ends: 1022 [2022-11-20 20:05:05,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:05:05,688 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 82 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:05,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 0 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:05:05,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2022-11-20 20:05:05,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 972. [2022-11-20 20:05:05,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 2.8764160659114317) internal successors, (2793), 971 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:05,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 2793 transitions. [2022-11-20 20:05:05,703 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 2793 transitions. Word has length 36 [2022-11-20 20:05:05,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:05,703 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 2793 transitions. [2022-11-20 20:05:05,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:05,703 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 2793 transitions. [2022-11-20 20:05:05,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:05,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:05,705 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] [2022-11-20 20:05:05,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-11-20 20:05:05,706 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:05,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:05,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1567002100, now seen corresponding path program 66 times [2022-11-20 20:05:05,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:05,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47715493] [2022-11-20 20:05:05,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:05,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:06,116 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:06,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:06,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47715493] [2022-11-20 20:05:06,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47715493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:06,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:06,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 20:05:06,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687249656] [2022-11-20 20:05:06,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:06,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:05:06,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:06,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:05:06,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:05:06,118 INFO L87 Difference]: Start difference. First operand 972 states and 2793 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:06,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:06,577 INFO L93 Difference]: Finished difference Result 1031 states and 2890 transitions. [2022-11-20 20:05:06,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:05:06,578 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 20:05:06,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:06,579 INFO L225 Difference]: With dead ends: 1031 [2022-11-20 20:05:06,580 INFO L226 Difference]: Without dead ends: 1022 [2022-11-20 20:05:06,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:05:06,580 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:06,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:05:06,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2022-11-20 20:05:06,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 974. [2022-11-20 20:05:06,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 973 states have (on average 2.8735868448098665) internal successors, (2796), 973 states have internal predecessors, (2796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:06,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 2796 transitions. [2022-11-20 20:05:06,593 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 2796 transitions. Word has length 36 [2022-11-20 20:05:06,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:06,594 INFO L495 AbstractCegarLoop]: Abstraction has 974 states and 2796 transitions. [2022-11-20 20:05:06,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:06,594 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 2796 transitions. [2022-11-20 20:05:06,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:06,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:06,595 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] [2022-11-20 20:05:06,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-11-20 20:05:06,595 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:06,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:06,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1603870152, now seen corresponding path program 67 times [2022-11-20 20:05:06,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:06,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453802871] [2022-11-20 20:05:06,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:06,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:07,011 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:07,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:07,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453802871] [2022-11-20 20:05:07,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453802871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:07,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:07,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 20:05:07,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421741023] [2022-11-20 20:05:07,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:07,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 20:05:07,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:07,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 20:05:07,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:05:07,012 INFO L87 Difference]: Start difference. First operand 974 states and 2796 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) [2022-11-20 20:05:07,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:07,390 INFO L93 Difference]: Finished difference Result 995 states and 2829 transitions. [2022-11-20 20:05:07,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:05:07,391 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 [2022-11-20 20:05:07,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:07,392 INFO L225 Difference]: With dead ends: 995 [2022-11-20 20:05:07,393 INFO L226 Difference]: Without dead ends: 978 [2022-11-20 20:05:07,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-20 20:05:07,393 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:07,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 0 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:05:07,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2022-11-20 20:05:07,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 962. [2022-11-20 20:05:07,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 961 states have (on average 2.8740894901144642) internal successors, (2762), 961 states have internal predecessors, (2762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:07,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 2762 transitions. [2022-11-20 20:05:07,406 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 2762 transitions. Word has length 36 [2022-11-20 20:05:07,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:07,406 INFO L495 AbstractCegarLoop]: Abstraction has 962 states and 2762 transitions. [2022-11-20 20:05:07,406 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) [2022-11-20 20:05:07,406 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 2762 transitions. [2022-11-20 20:05:07,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:07,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:07,407 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] [2022-11-20 20:05:07,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-11-20 20:05:07,408 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:07,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:07,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1660542414, now seen corresponding path program 1 times [2022-11-20 20:05:07,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:07,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688466515] [2022-11-20 20:05:07,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:07,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:08,265 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:08,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:08,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688466515] [2022-11-20 20:05:08,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688466515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:08,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:08,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:05:08,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678471319] [2022-11-20 20:05:08,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:08,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:05:08,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:08,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:05:08,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:05:08,267 INFO L87 Difference]: Start difference. First operand 962 states and 2762 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) [2022-11-20 20:05:09,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:09,388 INFO L93 Difference]: Finished difference Result 1687 states and 4763 transitions. [2022-11-20 20:05:09,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 20:05:09,388 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 [2022-11-20 20:05:09,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:09,391 INFO L225 Difference]: With dead ends: 1687 [2022-11-20 20:05:09,391 INFO L226 Difference]: Without dead ends: 1658 [2022-11-20 20:05:09,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=191, Invalid=459, Unknown=0, NotChecked=0, Total=650 [2022-11-20 20:05:09,392 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 300 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:09,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 0 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 20:05:09,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2022-11-20 20:05:09,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1026. [2022-11-20 20:05:09,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 1025 states have (on average 2.939512195121951) internal successors, (3013), 1025 states have internal predecessors, (3013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:09,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 3013 transitions. [2022-11-20 20:05:09,410 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 3013 transitions. Word has length 36 [2022-11-20 20:05:09,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:09,410 INFO L495 AbstractCegarLoop]: Abstraction has 1026 states and 3013 transitions. [2022-11-20 20:05:09,410 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) [2022-11-20 20:05:09,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 3013 transitions. [2022-11-20 20:05:09,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:09,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:09,412 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] [2022-11-20 20:05:09,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-11-20 20:05:09,412 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:09,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:09,412 INFO L85 PathProgramCache]: Analyzing trace with hash 334352224, now seen corresponding path program 2 times [2022-11-20 20:05:09,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:09,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692271538] [2022-11-20 20:05:09,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:09,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:10,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:10,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:10,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692271538] [2022-11-20 20:05:10,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692271538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:10,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:10,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:05:10,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321780319] [2022-11-20 20:05:10,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:10,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:05:10,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:10,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:05:10,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:05:10,370 INFO L87 Difference]: Start difference. First operand 1026 states and 3013 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) [2022-11-20 20:05:11,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:11,664 INFO L93 Difference]: Finished difference Result 1094 states and 3112 transitions. [2022-11-20 20:05:11,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:05:11,664 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 [2022-11-20 20:05:11,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:11,666 INFO L225 Difference]: With dead ends: 1094 [2022-11-20 20:05:11,666 INFO L226 Difference]: Without dead ends: 1082 [2022-11-20 20:05:11,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=159, Invalid=393, Unknown=0, NotChecked=0, Total=552 [2022-11-20 20:05:11,667 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 271 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:11,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 0 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 20:05:11,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2022-11-20 20:05:11,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1022. [2022-11-20 20:05:11,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 1021 states have (on average 2.942213516160627) internal successors, (3004), 1021 states have internal predecessors, (3004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:11,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 3004 transitions. [2022-11-20 20:05:11,682 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 3004 transitions. Word has length 36 [2022-11-20 20:05:11,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:11,682 INFO L495 AbstractCegarLoop]: Abstraction has 1022 states and 3004 transitions. [2022-11-20 20:05:11,682 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) [2022-11-20 20:05:11,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 3004 transitions. [2022-11-20 20:05:11,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:11,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:11,683 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] [2022-11-20 20:05:11,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-11-20 20:05:11,684 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:11,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:11,684 INFO L85 PathProgramCache]: Analyzing trace with hash -128802678, now seen corresponding path program 3 times [2022-11-20 20:05:11,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:11,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497195743] [2022-11-20 20:05:11,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:11,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:12,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:12,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:12,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497195743] [2022-11-20 20:05:12,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497195743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:12,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:12,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:05:12,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332109114] [2022-11-20 20:05:12,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:12,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:05:12,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:12,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:05:12,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:05:12,644 INFO L87 Difference]: Start difference. First operand 1022 states and 3004 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) [2022-11-20 20:05:13,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:13,848 INFO L93 Difference]: Finished difference Result 1089 states and 3100 transitions. [2022-11-20 20:05:13,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:05:13,849 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 [2022-11-20 20:05:13,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:13,850 INFO L225 Difference]: With dead ends: 1089 [2022-11-20 20:05:13,850 INFO L226 Difference]: Without dead ends: 1071 [2022-11-20 20:05:13,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2022-11-20 20:05:13,851 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 241 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:13,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 0 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 20:05:13,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2022-11-20 20:05:13,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 963. [2022-11-20 20:05:13,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 2.872141372141372) internal successors, (2763), 962 states have internal predecessors, (2763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:13,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 2763 transitions. [2022-11-20 20:05:13,867 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 2763 transitions. Word has length 36 [2022-11-20 20:05:13,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:13,867 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 2763 transitions. [2022-11-20 20:05:13,867 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) [2022-11-20 20:05:13,867 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 2763 transitions. [2022-11-20 20:05:13,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:13,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:13,869 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] [2022-11-20 20:05:13,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-11-20 20:05:13,869 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:13,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:13,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1893022962, now seen corresponding path program 4 times [2022-11-20 20:05:13,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:13,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188101441] [2022-11-20 20:05:13,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:13,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:14,682 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:14,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:14,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188101441] [2022-11-20 20:05:14,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188101441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:14,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:14,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:05:14,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325500283] [2022-11-20 20:05:14,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:14,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:05:14,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:14,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:05:14,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:05:14,684 INFO L87 Difference]: Start difference. First operand 963 states and 2763 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) [2022-11-20 20:05:15,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:15,752 INFO L93 Difference]: Finished difference Result 1019 states and 2838 transitions. [2022-11-20 20:05:15,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:05:15,753 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 [2022-11-20 20:05:15,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:15,754 INFO L225 Difference]: With dead ends: 1019 [2022-11-20 20:05:15,754 INFO L226 Difference]: Without dead ends: 1004 [2022-11-20 20:05:15,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2022-11-20 20:05:15,755 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 191 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:15,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 0 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 20:05:15,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2022-11-20 20:05:15,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 962. [2022-11-20 20:05:15,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 961 states have (on average 2.8657648283038504) internal successors, (2754), 961 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:15,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 2754 transitions. [2022-11-20 20:05:15,771 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 2754 transitions. Word has length 36 [2022-11-20 20:05:15,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:15,771 INFO L495 AbstractCegarLoop]: Abstraction has 962 states and 2754 transitions. [2022-11-20 20:05:15,771 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) [2022-11-20 20:05:15,771 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 2754 transitions. [2022-11-20 20:05:15,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:15,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:15,773 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] [2022-11-20 20:05:15,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-11-20 20:05:15,773 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:15,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:15,773 INFO L85 PathProgramCache]: Analyzing trace with hash -122540256, now seen corresponding path program 5 times [2022-11-20 20:05:15,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:15,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823263425] [2022-11-20 20:05:15,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:15,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:16,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:16,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:16,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823263425] [2022-11-20 20:05:16,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823263425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:16,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:16,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 20:05:16,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930292385] [2022-11-20 20:05:16,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:16,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 20:05:16,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:16,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 20:05:16,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-20 20:05:16,529 INFO L87 Difference]: Start difference. First operand 962 states and 2754 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:17,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:17,466 INFO L93 Difference]: Finished difference Result 1029 states and 2852 transitions. [2022-11-20 20:05:17,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:05:17,467 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 20:05:17,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:17,469 INFO L225 Difference]: With dead ends: 1029 [2022-11-20 20:05:17,469 INFO L226 Difference]: Without dead ends: 1018 [2022-11-20 20:05:17,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2022-11-20 20:05:17,469 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 240 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:17,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 0 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:05:17,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2022-11-20 20:05:17,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 962. [2022-11-20 20:05:17,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 961 states have (on average 2.8657648283038504) internal successors, (2754), 961 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:17,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 2754 transitions. [2022-11-20 20:05:17,499 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 2754 transitions. Word has length 36 [2022-11-20 20:05:17,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:17,499 INFO L495 AbstractCegarLoop]: Abstraction has 962 states and 2754 transitions. [2022-11-20 20:05:17,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:17,500 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 2754 transitions. [2022-11-20 20:05:17,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:17,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:17,501 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] [2022-11-20 20:05:17,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-11-20 20:05:17,502 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:17,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:17,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1324992772, now seen corresponding path program 6 times [2022-11-20 20:05:17,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:17,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196745858] [2022-11-20 20:05:17,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:17,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:18,703 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:18,703 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:18,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196745858] [2022-11-20 20:05:18,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196745858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:18,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:18,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 20:05:18,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306396575] [2022-11-20 20:05:18,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:18,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 20:05:18,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:18,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 20:05:18,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:05:18,705 INFO L87 Difference]: Start difference. First operand 962 states and 2754 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) [2022-11-20 20:05:19,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:19,716 INFO L93 Difference]: Finished difference Result 1727 states and 4911 transitions. [2022-11-20 20:05:19,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:05:19,717 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 [2022-11-20 20:05:19,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:19,720 INFO L225 Difference]: With dead ends: 1727 [2022-11-20 20:05:19,721 INFO L226 Difference]: Without dead ends: 1698 [2022-11-20 20:05:19,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-11-20 20:05:19,721 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 252 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:19,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 0 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 20:05:19,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2022-11-20 20:05:19,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1106. [2022-11-20 20:05:19,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1105 states have (on average 3.0244343891402714) internal successors, (3342), 1105 states have internal predecessors, (3342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:19,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 3342 transitions. [2022-11-20 20:05:19,743 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 3342 transitions. Word has length 36 [2022-11-20 20:05:19,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:19,743 INFO L495 AbstractCegarLoop]: Abstraction has 1106 states and 3342 transitions. [2022-11-20 20:05:19,743 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) [2022-11-20 20:05:19,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 3342 transitions. [2022-11-20 20:05:19,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:19,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:19,746 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] [2022-11-20 20:05:19,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-11-20 20:05:19,746 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:19,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:19,747 INFO L85 PathProgramCache]: Analyzing trace with hash 669901866, now seen corresponding path program 7 times [2022-11-20 20:05:19,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:19,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905428689] [2022-11-20 20:05:19,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:19,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:20,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:20,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:20,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905428689] [2022-11-20 20:05:20,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905428689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:20,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:20,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:05:20,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643234522] [2022-11-20 20:05:20,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:20,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:05:20,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:20,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:05:20,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:05:20,724 INFO L87 Difference]: Start difference. First operand 1106 states and 3342 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) [2022-11-20 20:05:22,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:22,006 INFO L93 Difference]: Finished difference Result 1262 states and 3701 transitions. [2022-11-20 20:05:22,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:05:22,006 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 [2022-11-20 20:05:22,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:22,009 INFO L225 Difference]: With dead ends: 1262 [2022-11-20 20:05:22,009 INFO L226 Difference]: Without dead ends: 1250 [2022-11-20 20:05:22,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2022-11-20 20:05:22,009 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 280 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:22,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 0 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 20:05:22,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2022-11-20 20:05:22,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1148. [2022-11-20 20:05:22,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 1147 states have (on average 3.031386224934612) internal successors, (3477), 1147 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:22,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 3477 transitions. [2022-11-20 20:05:22,034 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 3477 transitions. Word has length 36 [2022-11-20 20:05:22,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:22,034 INFO L495 AbstractCegarLoop]: Abstraction has 1148 states and 3477 transitions. [2022-11-20 20:05:22,034 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) [2022-11-20 20:05:22,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 3477 transitions. [2022-11-20 20:05:22,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:22,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:22,037 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] [2022-11-20 20:05:22,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-11-20 20:05:22,037 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:22,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:22,038 INFO L85 PathProgramCache]: Analyzing trace with hash 206746964, now seen corresponding path program 8 times [2022-11-20 20:05:22,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:22,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657730374] [2022-11-20 20:05:22,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:22,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:22,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:22,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:22,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657730374] [2022-11-20 20:05:22,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657730374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:22,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:22,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:05:22,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742540340] [2022-11-20 20:05:22,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:22,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:05:22,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:22,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:05:22,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:05:22,958 INFO L87 Difference]: Start difference. First operand 1148 states and 3477 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) [2022-11-20 20:05:24,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:24,046 INFO L93 Difference]: Finished difference Result 1272 states and 3708 transitions. [2022-11-20 20:05:24,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:05:24,046 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 [2022-11-20 20:05:24,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:24,048 INFO L225 Difference]: With dead ends: 1272 [2022-11-20 20:05:24,048 INFO L226 Difference]: Without dead ends: 1254 [2022-11-20 20:05:24,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2022-11-20 20:05:24,049 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 243 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:24,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 0 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 20:05:24,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2022-11-20 20:05:24,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1130. [2022-11-20 20:05:24,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1129 states have (on average 3.025686448184234) internal successors, (3416), 1129 states have internal predecessors, (3416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:24,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 3416 transitions. [2022-11-20 20:05:24,065 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 3416 transitions. Word has length 36 [2022-11-20 20:05:24,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:24,065 INFO L495 AbstractCegarLoop]: Abstraction has 1130 states and 3416 transitions. [2022-11-20 20:05:24,066 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) [2022-11-20 20:05:24,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 3416 transitions. [2022-11-20 20:05:24,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:24,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:24,067 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] [2022-11-20 20:05:24,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-11-20 20:05:24,067 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:24,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:24,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1263752530, now seen corresponding path program 9 times [2022-11-20 20:05:24,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:24,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641568557] [2022-11-20 20:05:24,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:24,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:24,966 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:24,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:24,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641568557] [2022-11-20 20:05:24,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641568557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:24,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:24,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:05:24,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164380304] [2022-11-20 20:05:24,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:24,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:05:24,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:24,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:05:24,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:05:24,967 INFO L87 Difference]: Start difference. First operand 1130 states and 3416 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) [2022-11-20 20:05:26,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:26,224 INFO L93 Difference]: Finished difference Result 1857 states and 5179 transitions. [2022-11-20 20:05:26,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 20:05:26,224 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 [2022-11-20 20:05:26,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:26,227 INFO L225 Difference]: With dead ends: 1857 [2022-11-20 20:05:26,228 INFO L226 Difference]: Without dead ends: 1828 [2022-11-20 20:05:26,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2022-11-20 20:05:26,228 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 244 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:26,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 0 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 20:05:26,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2022-11-20 20:05:26,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1166. [2022-11-20 20:05:26,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1165 states have (on average 3.0145922746781117) internal successors, (3512), 1165 states have internal predecessors, (3512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:26,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 3512 transitions. [2022-11-20 20:05:26,249 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 3512 transitions. Word has length 36 [2022-11-20 20:05:26,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:26,249 INFO L495 AbstractCegarLoop]: Abstraction has 1166 states and 3512 transitions. [2022-11-20 20:05:26,249 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) [2022-11-20 20:05:26,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 3512 transitions. [2022-11-20 20:05:26,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:26,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:26,251 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] [2022-11-20 20:05:26,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-11-20 20:05:26,251 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:26,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:26,251 INFO L85 PathProgramCache]: Analyzing trace with hash -888212388, now seen corresponding path program 10 times [2022-11-20 20:05:26,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:26,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857578306] [2022-11-20 20:05:26,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:26,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:27,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:27,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:27,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857578306] [2022-11-20 20:05:27,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857578306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:27,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:27,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:05:27,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061955185] [2022-11-20 20:05:27,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:27,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:05:27,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:27,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:05:27,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:05:27,048 INFO L87 Difference]: Start difference. First operand 1166 states and 3512 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) [2022-11-20 20:05:28,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:28,192 INFO L93 Difference]: Finished difference Result 1846 states and 5157 transitions. [2022-11-20 20:05:28,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 20:05:28,192 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 [2022-11-20 20:05:28,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:28,195 INFO L225 Difference]: With dead ends: 1846 [2022-11-20 20:05:28,195 INFO L226 Difference]: Without dead ends: 1775 [2022-11-20 20:05:28,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=209, Invalid=493, Unknown=0, NotChecked=0, Total=702 [2022-11-20 20:05:28,195 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 217 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:28,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 0 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 20:05:28,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2022-11-20 20:05:28,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1148. [2022-11-20 20:05:28,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 1147 states have (on average 3.01743679163034) internal successors, (3461), 1147 states have internal predecessors, (3461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:28,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 3461 transitions. [2022-11-20 20:05:28,215 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 3461 transitions. Word has length 36 [2022-11-20 20:05:28,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:28,215 INFO L495 AbstractCegarLoop]: Abstraction has 1148 states and 3461 transitions. [2022-11-20 20:05:28,215 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) [2022-11-20 20:05:28,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 3461 transitions. [2022-11-20 20:05:28,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:28,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:28,217 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] [2022-11-20 20:05:28,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-11-20 20:05:28,217 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:28,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:28,217 INFO L85 PathProgramCache]: Analyzing trace with hash -573255620, now seen corresponding path program 11 times [2022-11-20 20:05:28,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:28,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900111531] [2022-11-20 20:05:28,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:28,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:29,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:29,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:29,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900111531] [2022-11-20 20:05:29,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900111531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:29,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:29,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:05:29,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461370304] [2022-11-20 20:05:29,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:29,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:05:29,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:29,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:05:29,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:05:29,288 INFO L87 Difference]: Start difference. First operand 1148 states and 3461 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) [2022-11-20 20:05:30,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:30,469 INFO L93 Difference]: Finished difference Result 1254 states and 3669 transitions. [2022-11-20 20:05:30,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:05:30,470 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 [2022-11-20 20:05:30,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:30,472 INFO L225 Difference]: With dead ends: 1254 [2022-11-20 20:05:30,472 INFO L226 Difference]: Without dead ends: 1245 [2022-11-20 20:05:30,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2022-11-20 20:05:30,472 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 251 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:30,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 0 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 20:05:30,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2022-11-20 20:05:30,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1158. [2022-11-20 20:05:30,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1157 states have (on average 3.0112359550561796) internal successors, (3484), 1157 states have internal predecessors, (3484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:30,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 3484 transitions. [2022-11-20 20:05:30,490 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 3484 transitions. Word has length 36 [2022-11-20 20:05:30,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:30,490 INFO L495 AbstractCegarLoop]: Abstraction has 1158 states and 3484 transitions. [2022-11-20 20:05:30,490 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) [2022-11-20 20:05:30,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 3484 transitions. [2022-11-20 20:05:30,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:30,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:30,492 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] [2022-11-20 20:05:30,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-11-20 20:05:30,492 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:30,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:30,492 INFO L85 PathProgramCache]: Analyzing trace with hash 823979246, now seen corresponding path program 12 times [2022-11-20 20:05:30,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:30,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069073618] [2022-11-20 20:05:30,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:30,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:31,326 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:31,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:31,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069073618] [2022-11-20 20:05:31,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069073618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:31,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:31,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:05:31,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674602201] [2022-11-20 20:05:31,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:31,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:05:31,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:31,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:05:31,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:05:31,328 INFO L87 Difference]: Start difference. First operand 1158 states and 3484 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) [2022-11-20 20:05:32,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:32,183 INFO L93 Difference]: Finished difference Result 1272 states and 3690 transitions. [2022-11-20 20:05:32,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:05:32,183 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 [2022-11-20 20:05:32,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:32,186 INFO L225 Difference]: With dead ends: 1272 [2022-11-20 20:05:32,187 INFO L226 Difference]: Without dead ends: 1248 [2022-11-20 20:05:32,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2022-11-20 20:05:32,187 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 241 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:32,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 0 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 20:05:32,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2022-11-20 20:05:32,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1151. [2022-11-20 20:05:32,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 3.0104347826086957) internal successors, (3462), 1150 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:32,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 3462 transitions. [2022-11-20 20:05:32,214 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 3462 transitions. Word has length 36 [2022-11-20 20:05:32,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:32,215 INFO L495 AbstractCegarLoop]: Abstraction has 1151 states and 3462 transitions. [2022-11-20 20:05:32,215 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) [2022-11-20 20:05:32,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 3462 transitions. [2022-11-20 20:05:32,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:32,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:32,217 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] [2022-11-20 20:05:32,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-11-20 20:05:32,218 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:32,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:32,218 INFO L85 PathProgramCache]: Analyzing trace with hash -648920828, now seen corresponding path program 13 times [2022-11-20 20:05:32,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:32,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932553759] [2022-11-20 20:05:32,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:32,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:32,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:32,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:32,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932553759] [2022-11-20 20:05:32,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932553759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:32,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:32,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 20:05:32,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477081732] [2022-11-20 20:05:32,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:32,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 20:05:32,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:32,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 20:05:32,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:05:32,926 INFO L87 Difference]: Start difference. First operand 1151 states and 3462 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) [2022-11-20 20:05:33,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:33,614 INFO L93 Difference]: Finished difference Result 1377 states and 3983 transitions. [2022-11-20 20:05:33,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 20:05:33,614 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 [2022-11-20 20:05:33,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:33,616 INFO L225 Difference]: With dead ends: 1377 [2022-11-20 20:05:33,616 INFO L226 Difference]: Without dead ends: 1358 [2022-11-20 20:05:33,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-11-20 20:05:33,617 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 209 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:33,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 0 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:05:33,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2022-11-20 20:05:33,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 1209. [2022-11-20 20:05:33,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 1208 states have (on average 3.004139072847682) internal successors, (3629), 1208 states have internal predecessors, (3629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:33,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 3629 transitions. [2022-11-20 20:05:33,634 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 3629 transitions. Word has length 36 [2022-11-20 20:05:33,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:33,635 INFO L495 AbstractCegarLoop]: Abstraction has 1209 states and 3629 transitions. [2022-11-20 20:05:33,635 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) [2022-11-20 20:05:33,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 3629 transitions. [2022-11-20 20:05:33,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:33,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:33,637 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] [2022-11-20 20:05:33,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-11-20 20:05:33,637 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:33,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:33,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1172415014, now seen corresponding path program 14 times [2022-11-20 20:05:33,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:33,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865647713] [2022-11-20 20:05:33,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:33,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:34,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:34,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:34,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865647713] [2022-11-20 20:05:34,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865647713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:34,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:34,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:05:34,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55636364] [2022-11-20 20:05:34,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:34,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:05:34,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:34,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:05:34,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:05:34,552 INFO L87 Difference]: Start difference. First operand 1209 states and 3629 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) [2022-11-20 20:05:35,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:35,616 INFO L93 Difference]: Finished difference Result 1312 states and 3800 transitions. [2022-11-20 20:05:35,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:05:35,616 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 [2022-11-20 20:05:35,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:35,619 INFO L225 Difference]: With dead ends: 1312 [2022-11-20 20:05:35,619 INFO L226 Difference]: Without dead ends: 1279 [2022-11-20 20:05:35,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2022-11-20 20:05:35,619 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 258 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:35,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 0 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 20:05:35,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2022-11-20 20:05:35,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1190. [2022-11-20 20:05:35,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 1189 states have (on average 3.00336417157275) internal successors, (3571), 1189 states have internal predecessors, (3571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:35,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 3571 transitions. [2022-11-20 20:05:35,647 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 3571 transitions. Word has length 36 [2022-11-20 20:05:35,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:35,647 INFO L495 AbstractCegarLoop]: Abstraction has 1190 states and 3571 transitions. [2022-11-20 20:05:35,647 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) [2022-11-20 20:05:35,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 3571 transitions. [2022-11-20 20:05:35,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:35,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:35,650 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] [2022-11-20 20:05:35,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-11-20 20:05:35,650 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:35,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:35,651 INFO L85 PathProgramCache]: Analyzing trace with hash 2115875522, now seen corresponding path program 15 times [2022-11-20 20:05:35,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:35,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723760176] [2022-11-20 20:05:35,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:35,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:36,540 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:36,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:36,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723760176] [2022-11-20 20:05:36,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723760176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:36,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:36,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:05:36,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709641685] [2022-11-20 20:05:36,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:36,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:05:36,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:36,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:05:36,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:05:36,542 INFO L87 Difference]: Start difference. First operand 1190 states and 3571 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) [2022-11-20 20:05:37,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:37,822 INFO L93 Difference]: Finished difference Result 1880 states and 5254 transitions. [2022-11-20 20:05:37,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 20:05:37,822 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 [2022-11-20 20:05:37,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:37,825 INFO L225 Difference]: With dead ends: 1880 [2022-11-20 20:05:37,825 INFO L226 Difference]: Without dead ends: 1851 [2022-11-20 20:05:37,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=188, Invalid=462, Unknown=0, NotChecked=0, Total=650 [2022-11-20 20:05:37,826 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 229 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:37,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 0 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 20:05:37,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2022-11-20 20:05:37,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1203. [2022-11-20 20:05:37,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 3.0008319467554077) internal successors, (3607), 1202 states have internal predecessors, (3607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:37,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 3607 transitions. [2022-11-20 20:05:37,854 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 3607 transitions. Word has length 36 [2022-11-20 20:05:37,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:37,854 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 3607 transitions. [2022-11-20 20:05:37,854 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) [2022-11-20 20:05:37,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 3607 transitions. [2022-11-20 20:05:37,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:37,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:37,856 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] [2022-11-20 20:05:37,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-11-20 20:05:37,856 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:37,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:37,856 INFO L85 PathProgramCache]: Analyzing trace with hash -184197136, now seen corresponding path program 16 times [2022-11-20 20:05:37,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:37,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096474644] [2022-11-20 20:05:37,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:37,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:38,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:38,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:38,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096474644] [2022-11-20 20:05:38,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096474644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:38,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:38,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:05:38,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40828634] [2022-11-20 20:05:38,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:38,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:05:38,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:38,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:05:38,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:05:38,705 INFO L87 Difference]: Start difference. First operand 1203 states and 3607 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) [2022-11-20 20:05:39,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:39,663 INFO L93 Difference]: Finished difference Result 1293 states and 3751 transitions. [2022-11-20 20:05:39,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:05:39,664 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 [2022-11-20 20:05:39,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:39,666 INFO L225 Difference]: With dead ends: 1293 [2022-11-20 20:05:39,666 INFO L226 Difference]: Without dead ends: 1281 [2022-11-20 20:05:39,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2022-11-20 20:05:39,667 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 187 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:39,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 0 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 20:05:39,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2022-11-20 20:05:39,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1199. [2022-11-20 20:05:39,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1198 states have (on average 3.003338898163606) internal successors, (3598), 1198 states have internal predecessors, (3598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:39,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 3598 transitions. [2022-11-20 20:05:39,683 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 3598 transitions. Word has length 36 [2022-11-20 20:05:39,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:39,683 INFO L495 AbstractCegarLoop]: Abstraction has 1199 states and 3598 transitions. [2022-11-20 20:05:39,684 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) [2022-11-20 20:05:39,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 3598 transitions. [2022-11-20 20:05:39,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:39,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:39,685 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] [2022-11-20 20:05:39,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-11-20 20:05:39,685 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:39,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:39,686 INFO L85 PathProgramCache]: Analyzing trace with hash -647352038, now seen corresponding path program 17 times [2022-11-20 20:05:39,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:39,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216184602] [2022-11-20 20:05:39,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:39,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:40,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:40,607 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:40,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216184602] [2022-11-20 20:05:40,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216184602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:40,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:40,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:05:40,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478193211] [2022-11-20 20:05:40,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:40,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:05:40,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:40,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:05:40,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:05:40,608 INFO L87 Difference]: Start difference. First operand 1199 states and 3598 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) [2022-11-20 20:05:41,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:41,705 INFO L93 Difference]: Finished difference Result 1296 states and 3746 transitions. [2022-11-20 20:05:41,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:05:41,706 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 [2022-11-20 20:05:41,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:41,708 INFO L225 Difference]: With dead ends: 1296 [2022-11-20 20:05:41,708 INFO L226 Difference]: Without dead ends: 1278 [2022-11-20 20:05:41,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2022-11-20 20:05:41,708 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 215 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:41,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 0 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 20:05:41,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2022-11-20 20:05:41,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1191. [2022-11-20 20:05:41,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1190 states have (on average 3.0016806722689076) internal successors, (3572), 1190 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:41,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 3572 transitions. [2022-11-20 20:05:41,736 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 3572 transitions. Word has length 36 [2022-11-20 20:05:41,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:41,737 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 3572 transitions. [2022-11-20 20:05:41,737 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) [2022-11-20 20:05:41,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 3572 transitions. [2022-11-20 20:05:41,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:41,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:41,738 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] [2022-11-20 20:05:41,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-11-20 20:05:41,739 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:41,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:41,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1374473602, now seen corresponding path program 18 times [2022-11-20 20:05:41,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:41,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391247807] [2022-11-20 20:05:41,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:41,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:42,446 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:42,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:42,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391247807] [2022-11-20 20:05:42,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391247807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:42,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:42,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:05:42,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434934169] [2022-11-20 20:05:42,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:42,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:05:42,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:42,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:05:42,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:05:42,447 INFO L87 Difference]: Start difference. First operand 1191 states and 3572 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) [2022-11-20 20:05:43,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:43,547 INFO L93 Difference]: Finished difference Result 1267 states and 3689 transitions. [2022-11-20 20:05:43,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:05:43,547 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 [2022-11-20 20:05:43,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:43,549 INFO L225 Difference]: With dead ends: 1267 [2022-11-20 20:05:43,549 INFO L226 Difference]: Without dead ends: 1252 [2022-11-20 20:05:43,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2022-11-20 20:05:43,550 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 189 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:43,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 0 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 20:05:43,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2022-11-20 20:05:43,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1190. [2022-11-20 20:05:43,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 1189 states have (on average 3.0) internal successors, (3567), 1189 states have internal predecessors, (3567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:43,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 3567 transitions. [2022-11-20 20:05:43,566 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 3567 transitions. Word has length 36 [2022-11-20 20:05:43,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:43,566 INFO L495 AbstractCegarLoop]: Abstraction has 1190 states and 3567 transitions. [2022-11-20 20:05:43,566 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) [2022-11-20 20:05:43,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 3567 transitions. [2022-11-20 20:05:43,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:43,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:43,568 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] [2022-11-20 20:05:43,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-11-20 20:05:43,568 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:43,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:43,568 INFO L85 PathProgramCache]: Analyzing trace with hash 500897002, now seen corresponding path program 19 times [2022-11-20 20:05:43,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:43,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717772689] [2022-11-20 20:05:43,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:43,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:44,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:44,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:44,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717772689] [2022-11-20 20:05:44,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717772689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:44,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:44,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 20:05:44,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557859148] [2022-11-20 20:05:44,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:44,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 20:05:44,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:44,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 20:05:44,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:05:44,202 INFO L87 Difference]: Start difference. First operand 1190 states and 3567 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) [2022-11-20 20:05:44,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:44,857 INFO L93 Difference]: Finished difference Result 1407 states and 4090 transitions. [2022-11-20 20:05:44,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 20:05:44,858 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 [2022-11-20 20:05:44,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:44,860 INFO L225 Difference]: With dead ends: 1407 [2022-11-20 20:05:44,860 INFO L226 Difference]: Without dead ends: 1398 [2022-11-20 20:05:44,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2022-11-20 20:05:44,861 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 176 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:44,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 0 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:05:44,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2022-11-20 20:05:44,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1262. [2022-11-20 20:05:44,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 3.0190325138778746) internal successors, (3807), 1261 states have internal predecessors, (3807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:44,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 3807 transitions. [2022-11-20 20:05:44,887 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 3807 transitions. Word has length 36 [2022-11-20 20:05:44,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:44,887 INFO L495 AbstractCegarLoop]: Abstraction has 1262 states and 3807 transitions. [2022-11-20 20:05:44,887 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) [2022-11-20 20:05:44,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 3807 transitions. [2022-11-20 20:05:44,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:44,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:44,889 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] [2022-11-20 20:05:44,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-11-20 20:05:44,890 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:44,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:44,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1898131868, now seen corresponding path program 20 times [2022-11-20 20:05:44,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:44,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512274636] [2022-11-20 20:05:44,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:44,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:45,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:45,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:45,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512274636] [2022-11-20 20:05:45,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512274636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:45,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:45,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:05:45,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529662528] [2022-11-20 20:05:45,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:45,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:05:45,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:45,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:05:45,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:05:45,569 INFO L87 Difference]: Start difference. First operand 1262 states and 3807 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) [2022-11-20 20:05:46,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:46,383 INFO L93 Difference]: Finished difference Result 1375 states and 3998 transitions. [2022-11-20 20:05:46,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:05:46,384 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 [2022-11-20 20:05:46,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:46,386 INFO L225 Difference]: With dead ends: 1375 [2022-11-20 20:05:46,386 INFO L226 Difference]: Without dead ends: 1350 [2022-11-20 20:05:46,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2022-11-20 20:05:46,387 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 256 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:46,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 0 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:05:46,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2022-11-20 20:05:46,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1268. [2022-11-20 20:05:46,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 1267 states have (on average 3.0118389897395423) internal successors, (3816), 1267 states have internal predecessors, (3816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:46,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 3816 transitions. [2022-11-20 20:05:46,405 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 3816 transitions. Word has length 36 [2022-11-20 20:05:46,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:46,405 INFO L495 AbstractCegarLoop]: Abstraction has 1268 states and 3816 transitions. [2022-11-20 20:05:46,405 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) [2022-11-20 20:05:46,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 3816 transitions. [2022-11-20 20:05:46,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:46,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:46,407 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] [2022-11-20 20:05:46,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-11-20 20:05:46,407 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:46,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:46,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1491297200, now seen corresponding path program 21 times [2022-11-20 20:05:46,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:46,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131871085] [2022-11-20 20:05:46,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:46,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:46,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:46,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131871085] [2022-11-20 20:05:46,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131871085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:46,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:46,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 20:05:46,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291706082] [2022-11-20 20:05:46,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:46,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 20:05:46,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:46,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 20:05:46,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:05:46,984 INFO L87 Difference]: Start difference. First operand 1268 states and 3816 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) [2022-11-20 20:05:47,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:47,676 INFO L93 Difference]: Finished difference Result 1425 states and 4106 transitions. [2022-11-20 20:05:47,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 20:05:47,677 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 [2022-11-20 20:05:47,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:47,679 INFO L225 Difference]: With dead ends: 1425 [2022-11-20 20:05:47,679 INFO L226 Difference]: Without dead ends: 1400 [2022-11-20 20:05:47,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2022-11-20 20:05:47,679 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 239 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:47,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 0 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:05:47,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2022-11-20 20:05:47,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1258. [2022-11-20 20:05:47,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 2.9992044550517103) internal successors, (3770), 1257 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:47,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 3770 transitions. [2022-11-20 20:05:47,704 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 3770 transitions. Word has length 36 [2022-11-20 20:05:47,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:47,705 INFO L495 AbstractCegarLoop]: Abstraction has 1258 states and 3770 transitions. [2022-11-20 20:05:47,705 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) [2022-11-20 20:05:47,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 3770 transitions. [2022-11-20 20:05:47,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:47,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:47,708 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] [2022-11-20 20:05:47,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-11-20 20:05:47,708 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:47,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:47,708 INFO L85 PathProgramCache]: Analyzing trace with hash -454785746, now seen corresponding path program 22 times [2022-11-20 20:05:47,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:47,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951270107] [2022-11-20 20:05:47,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:47,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:48,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:48,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:48,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951270107] [2022-11-20 20:05:48,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951270107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:48,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:48,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 20:05:48,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520565555] [2022-11-20 20:05:48,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:48,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 20:05:48,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:48,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 20:05:48,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-20 20:05:48,374 INFO L87 Difference]: Start difference. First operand 1258 states and 3770 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:49,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:49,145 INFO L93 Difference]: Finished difference Result 1411 states and 4064 transitions. [2022-11-20 20:05:49,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:05:49,146 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2022-11-20 20:05:49,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:49,149 INFO L225 Difference]: With dead ends: 1411 [2022-11-20 20:05:49,149 INFO L226 Difference]: Without dead ends: 1380 [2022-11-20 20:05:49,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2022-11-20 20:05:49,150 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 233 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:49,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 0 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 20:05:49,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2022-11-20 20:05:49,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1258. [2022-11-20 20:05:49,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 2.9896579156722356) internal successors, (3758), 1257 states have internal predecessors, (3758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:49,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 3758 transitions. [2022-11-20 20:05:49,177 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 3758 transitions. Word has length 36 [2022-11-20 20:05:49,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:49,178 INFO L495 AbstractCegarLoop]: Abstraction has 1258 states and 3758 transitions. [2022-11-20 20:05:49,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:49,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 3758 transitions. [2022-11-20 20:05:49,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:49,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:49,181 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] [2022-11-20 20:05:49,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-11-20 20:05:49,181 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:49,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:49,181 INFO L85 PathProgramCache]: Analyzing trace with hash -92253784, now seen corresponding path program 68 times [2022-11-20 20:05:49,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:49,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311609032] [2022-11-20 20:05:49,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:49,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:49,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:49,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:49,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311609032] [2022-11-20 20:05:49,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311609032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:49,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:49,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 20:05:49,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82260060] [2022-11-20 20:05:49,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:49,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 20:05:49,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:49,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 20:05:49,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:05:49,953 INFO L87 Difference]: Start difference. First operand 1258 states and 3758 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) [2022-11-20 20:05:50,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:50,702 INFO L93 Difference]: Finished difference Result 1379 states and 3958 transitions. [2022-11-20 20:05:50,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:05:50,702 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 [2022-11-20 20:05:50,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:50,704 INFO L225 Difference]: With dead ends: 1379 [2022-11-20 20:05:50,704 INFO L226 Difference]: Without dead ends: 1336 [2022-11-20 20:05:50,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-11-20 20:05:50,705 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 214 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:50,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 0 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 20:05:50,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2022-11-20 20:05:50,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 1218. [2022-11-20 20:05:50,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 1217 states have (on average 2.989317995069844) internal successors, (3638), 1217 states have internal predecessors, (3638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:50,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 3638 transitions. [2022-11-20 20:05:50,722 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 3638 transitions. Word has length 36 [2022-11-20 20:05:50,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:50,722 INFO L495 AbstractCegarLoop]: Abstraction has 1218 states and 3638 transitions. [2022-11-20 20:05:50,723 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) [2022-11-20 20:05:50,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 3638 transitions. [2022-11-20 20:05:50,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:50,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:50,724 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] [2022-11-20 20:05:50,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-11-20 20:05:50,725 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:50,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:50,725 INFO L85 PathProgramCache]: Analyzing trace with hash 270055922, now seen corresponding path program 23 times [2022-11-20 20:05:50,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:50,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928655357] [2022-11-20 20:05:50,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:50,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:51,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:51,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:51,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928655357] [2022-11-20 20:05:51,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928655357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:51,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:51,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:05:51,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350775441] [2022-11-20 20:05:51,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:51,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:05:51,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:51,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:05:51,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:05:51,735 INFO L87 Difference]: Start difference. First operand 1218 states and 3638 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) [2022-11-20 20:05:53,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:53,150 INFO L93 Difference]: Finished difference Result 2047 states and 5735 transitions. [2022-11-20 20:05:53,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 20:05:53,150 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 [2022-11-20 20:05:53,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:53,153 INFO L225 Difference]: With dead ends: 2047 [2022-11-20 20:05:53,153 INFO L226 Difference]: Without dead ends: 2018 [2022-11-20 20:05:53,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=179, Invalid=471, Unknown=0, NotChecked=0, Total=650 [2022-11-20 20:05:53,154 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 296 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:53,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 0 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 20:05:53,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2022-11-20 20:05:53,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1238. [2022-11-20 20:05:53,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 2.9935327405012124) internal successors, (3703), 1237 states have internal predecessors, (3703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:53,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 3703 transitions. [2022-11-20 20:05:53,177 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 3703 transitions. Word has length 36 [2022-11-20 20:05:53,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:53,177 INFO L495 AbstractCegarLoop]: Abstraction has 1238 states and 3703 transitions. [2022-11-20 20:05:53,177 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) [2022-11-20 20:05:53,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 3703 transitions. [2022-11-20 20:05:53,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:53,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:53,179 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] [2022-11-20 20:05:53,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-11-20 20:05:53,179 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:53,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:53,179 INFO L85 PathProgramCache]: Analyzing trace with hash -2030016736, now seen corresponding path program 24 times [2022-11-20 20:05:53,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:53,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628859581] [2022-11-20 20:05:53,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:53,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:54,183 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:54,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:54,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628859581] [2022-11-20 20:05:54,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628859581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:54,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:54,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:05:54,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431513667] [2022-11-20 20:05:54,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:54,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:05:54,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:54,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:05:54,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:05:54,185 INFO L87 Difference]: Start difference. First operand 1238 states and 3703 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) [2022-11-20 20:05:55,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:55,211 INFO L93 Difference]: Finished difference Result 1437 states and 4166 transitions. [2022-11-20 20:05:55,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:05:55,211 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 [2022-11-20 20:05:55,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:55,214 INFO L225 Difference]: With dead ends: 1437 [2022-11-20 20:05:55,214 INFO L226 Difference]: Without dead ends: 1425 [2022-11-20 20:05:55,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2022-11-20 20:05:55,214 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 208 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:55,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 0 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 20:05:55,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2022-11-20 20:05:55,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1253. [2022-11-20 20:05:55,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 1252 states have (on average 2.9952076677316293) internal successors, (3750), 1252 states have internal predecessors, (3750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:55,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 3750 transitions. [2022-11-20 20:05:55,234 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 3750 transitions. Word has length 36 [2022-11-20 20:05:55,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:55,234 INFO L495 AbstractCegarLoop]: Abstraction has 1253 states and 3750 transitions. [2022-11-20 20:05:55,234 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) [2022-11-20 20:05:55,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 3750 transitions. [2022-11-20 20:05:55,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:55,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:55,236 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] [2022-11-20 20:05:55,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-11-20 20:05:55,236 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:55,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:55,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1801795658, now seen corresponding path program 25 times [2022-11-20 20:05:55,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:55,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374551436] [2022-11-20 20:05:55,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:55,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:56,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:56,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:56,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374551436] [2022-11-20 20:05:56,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374551436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:56,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:56,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:05:56,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022988684] [2022-11-20 20:05:56,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:56,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:05:56,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:56,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:05:56,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:05:56,399 INFO L87 Difference]: Start difference. First operand 1253 states and 3750 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) [2022-11-20 20:05:57,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:05:57,721 INFO L93 Difference]: Finished difference Result 1447 states and 4173 transitions. [2022-11-20 20:05:57,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:05:57,721 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 [2022-11-20 20:05:57,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:05:57,723 INFO L225 Difference]: With dead ends: 1447 [2022-11-20 20:05:57,723 INFO L226 Difference]: Without dead ends: 1429 [2022-11-20 20:05:57,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2022-11-20 20:05:57,724 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 271 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:05:57,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 0 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 20:05:57,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2022-11-20 20:05:57,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 1241. [2022-11-20 20:05:57,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 1240 states have (on average 2.9911290322580646) internal successors, (3709), 1240 states have internal predecessors, (3709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:05:57,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 3709 transitions. [2022-11-20 20:05:57,741 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 3709 transitions. Word has length 36 [2022-11-20 20:05:57,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:05:57,741 INFO L495 AbstractCegarLoop]: Abstraction has 1241 states and 3709 transitions. [2022-11-20 20:05:57,742 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) [2022-11-20 20:05:57,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 3709 transitions. [2022-11-20 20:05:57,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:05:57,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:57,743 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] [2022-11-20 20:05:57,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-11-20 20:05:57,743 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:05:57,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:57,744 INFO L85 PathProgramCache]: Analyzing trace with hash 331296164, now seen corresponding path program 26 times [2022-11-20 20:05:57,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:57,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301203640] [2022-11-20 20:05:57,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:57,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:05:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:05:58,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:05:58,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:05:58,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301203640] [2022-11-20 20:05:58,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301203640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:05:58,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:05:58,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:05:58,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395117906] [2022-11-20 20:05:58,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:05:58,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:05:58,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:05:58,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:05:58,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:05:58,695 INFO L87 Difference]: Start difference. First operand 1241 states and 3709 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) [2022-11-20 20:06:00,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:06:00,310 INFO L93 Difference]: Finished difference Result 2131 states and 5909 transitions. [2022-11-20 20:06:00,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 20:06:00,310 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 [2022-11-20 20:06:00,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:06:00,314 INFO L225 Difference]: With dead ends: 2131 [2022-11-20 20:06:00,314 INFO L226 Difference]: Without dead ends: 2102 [2022-11-20 20:06:00,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2022-11-20 20:06:00,314 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 266 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:06:00,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 0 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 20:06:00,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2102 states. [2022-11-20 20:06:00,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2102 to 1271. [2022-11-20 20:06:00,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1271 states, 1270 states have (on average 2.9803149606299213) internal successors, (3785), 1270 states have internal predecessors, (3785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:06:00,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 3785 transitions. [2022-11-20 20:06:00,339 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 3785 transitions. Word has length 36 [2022-11-20 20:06:00,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:06:00,339 INFO L495 AbstractCegarLoop]: Abstraction has 1271 states and 3785 transitions. [2022-11-20 20:06:00,339 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) [2022-11-20 20:06:00,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 3785 transitions. [2022-11-20 20:06:00,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:06:00,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:06:00,341 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] [2022-11-20 20:06:00,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-11-20 20:06:00,341 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:06:00,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:06:00,341 INFO L85 PathProgramCache]: Analyzing trace with hash 706836306, now seen corresponding path program 27 times [2022-11-20 20:06:00,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:06:00,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147243517] [2022-11-20 20:06:00,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:06:00,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:06:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:06:01,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:06:01,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:06:01,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147243517] [2022-11-20 20:06:01,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147243517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:06:01,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:06:01,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 20:06:01,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256671192] [2022-11-20 20:06:01,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:06:01,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 20:06:01,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:06:01,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 20:06:01,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:06:01,030 INFO L87 Difference]: Start difference. First operand 1271 states and 3785 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) [2022-11-20 20:06:02,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:06:02,032 INFO L93 Difference]: Finished difference Result 2274 states and 6327 transitions. [2022-11-20 20:06:02,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 20:06:02,032 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 [2022-11-20 20:06:02,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:06:02,035 INFO L225 Difference]: With dead ends: 2274 [2022-11-20 20:06:02,036 INFO L226 Difference]: Without dead ends: 2203 [2022-11-20 20:06:02,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2022-11-20 20:06:02,036 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 253 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:06:02,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 0 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 20:06:02,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2022-11-20 20:06:02,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 1267. [2022-11-20 20:06:02,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1267 states, 1266 states have (on average 2.985781990521327) internal successors, (3780), 1266 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:06:02,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1267 states to 1267 states and 3780 transitions. [2022-11-20 20:06:02,058 INFO L78 Accepts]: Start accepts. Automaton has 1267 states and 3780 transitions. Word has length 36 [2022-11-20 20:06:02,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:06:02,058 INFO L495 AbstractCegarLoop]: Abstraction has 1267 states and 3780 transitions. [2022-11-20 20:06:02,058 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) [2022-11-20 20:06:02,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1267 states and 3780 transitions. [2022-11-20 20:06:02,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:06:02,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:06:02,059 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] [2022-11-20 20:06:02,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-11-20 20:06:02,060 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:06:02,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:06:02,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1021793074, now seen corresponding path program 28 times [2022-11-20 20:06:02,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:06:02,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505615756] [2022-11-20 20:06:02,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:06:02,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:06:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:06:02,874 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:06:02,875 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:06:02,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505615756] [2022-11-20 20:06:02,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505615756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:06:02,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:06:02,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:06:02,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900409458] [2022-11-20 20:06:02,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:06:02,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:06:02,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:06:02,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:06:02,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:06:02,876 INFO L87 Difference]: Start difference. First operand 1267 states and 3780 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) [2022-11-20 20:06:03,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:06:03,693 INFO L93 Difference]: Finished difference Result 1450 states and 4196 transitions. [2022-11-20 20:06:03,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:06:03,693 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 [2022-11-20 20:06:03,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:06:03,695 INFO L225 Difference]: With dead ends: 1450 [2022-11-20 20:06:03,696 INFO L226 Difference]: Without dead ends: 1441 [2022-11-20 20:06:03,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2022-11-20 20:06:03,696 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 167 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:06:03,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 0 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:06:03,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2022-11-20 20:06:03,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1267. [2022-11-20 20:06:03,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1267 states, 1266 states have (on average 2.985781990521327) internal successors, (3780), 1266 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:06:03,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1267 states to 1267 states and 3780 transitions. [2022-11-20 20:06:03,714 INFO L78 Accepts]: Start accepts. Automaton has 1267 states and 3780 transitions. Word has length 36 [2022-11-20 20:06:03,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:06:03,714 INFO L495 AbstractCegarLoop]: Abstraction has 1267 states and 3780 transitions. [2022-11-20 20:06:03,714 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) [2022-11-20 20:06:03,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1267 states and 3780 transitions. [2022-11-20 20:06:03,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:06:03,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:06:03,716 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] [2022-11-20 20:06:03,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-11-20 20:06:03,716 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:06:03,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:06:03,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1875939356, now seen corresponding path program 29 times [2022-11-20 20:06:03,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:06:03,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424587000] [2022-11-20 20:06:03,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:06:03,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:06:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:06:04,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:06:04,537 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:06:04,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424587000] [2022-11-20 20:06:04,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424587000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:06:04,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:06:04,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:06:04,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906051862] [2022-11-20 20:06:04,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:06:04,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:06:04,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:06:04,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:06:04,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:06:04,538 INFO L87 Difference]: Start difference. First operand 1267 states and 3780 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) [2022-11-20 20:06:05,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:06:05,387 INFO L93 Difference]: Finished difference Result 1460 states and 4212 transitions. [2022-11-20 20:06:05,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:06:05,388 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 [2022-11-20 20:06:05,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:06:05,390 INFO L225 Difference]: With dead ends: 1460 [2022-11-20 20:06:05,390 INFO L226 Difference]: Without dead ends: 1426 [2022-11-20 20:06:05,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2022-11-20 20:06:05,391 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 189 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:06:05,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 0 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 20:06:05,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2022-11-20 20:06:05,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1258. [2022-11-20 20:06:05,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 2.9856801909307875) internal successors, (3753), 1257 states have internal predecessors, (3753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:06:05,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 3753 transitions. [2022-11-20 20:06:05,408 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 3753 transitions. Word has length 36 [2022-11-20 20:06:05,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:06:05,408 INFO L495 AbstractCegarLoop]: Abstraction has 1258 states and 3753 transitions. [2022-11-20 20:06:05,408 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) [2022-11-20 20:06:05,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 3753 transitions. [2022-11-20 20:06:05,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:06:05,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:06:05,410 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] [2022-11-20 20:06:05,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-11-20 20:06:05,410 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:06:05,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:06:05,411 INFO L85 PathProgramCache]: Analyzing trace with hash 946127866, now seen corresponding path program 30 times [2022-11-20 20:06:05,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:06:05,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74790388] [2022-11-20 20:06:05,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:06:05,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:06:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:06:06,258 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:06:06,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:06:06,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74790388] [2022-11-20 20:06:06,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74790388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:06:06,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:06:06,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:06:06,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714356242] [2022-11-20 20:06:06,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:06:06,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:06:06,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:06:06,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:06:06,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:06:06,259 INFO L87 Difference]: Start difference. First operand 1258 states and 3753 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) [2022-11-20 20:06:07,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:06:07,098 INFO L93 Difference]: Finished difference Result 1495 states and 4258 transitions. [2022-11-20 20:06:07,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:06:07,098 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 [2022-11-20 20:06:07,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:06:07,100 INFO L225 Difference]: With dead ends: 1495 [2022-11-20 20:06:07,100 INFO L226 Difference]: Without dead ends: 1476 [2022-11-20 20:06:07,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2022-11-20 20:06:07,101 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 252 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:06:07,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 0 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 20:06:07,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-20 20:06:07,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1258. [2022-11-20 20:06:07,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 2.9856801909307875) internal successors, (3753), 1257 states have internal predecessors, (3753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:06:07,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 3753 transitions. [2022-11-20 20:06:07,120 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 3753 transitions. Word has length 36 [2022-11-20 20:06:07,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:06:07,120 INFO L495 AbstractCegarLoop]: Abstraction has 1258 states and 3753 transitions. [2022-11-20 20:06:07,120 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) [2022-11-20 20:06:07,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 3753 transitions. [2022-11-20 20:06:07,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:06:07,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:06:07,122 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] [2022-11-20 20:06:07,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-11-20 20:06:07,122 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:06:07,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:06:07,122 INFO L85 PathProgramCache]: Analyzing trace with hash 422633680, now seen corresponding path program 31 times [2022-11-20 20:06:07,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:06:07,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369549590] [2022-11-20 20:06:07,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:06:07,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:06:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:06:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:06:08,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:06:08,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369549590] [2022-11-20 20:06:08,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369549590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:06:08,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:06:08,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:06:08,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537401510] [2022-11-20 20:06:08,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:06:08,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:06:08,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:06:08,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:06:08,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:06:08,096 INFO L87 Difference]: Start difference. First operand 1258 states and 3753 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) [2022-11-20 20:06:09,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:06:09,096 INFO L93 Difference]: Finished difference Result 1483 states and 4225 transitions. [2022-11-20 20:06:09,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:06:09,097 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 [2022-11-20 20:06:09,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:06:09,099 INFO L225 Difference]: With dead ends: 1483 [2022-11-20 20:06:09,099 INFO L226 Difference]: Without dead ends: 1442 [2022-11-20 20:06:09,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2022-11-20 20:06:09,099 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 274 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:06:09,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 0 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 20:06:09,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2022-11-20 20:06:09,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1243. [2022-11-20 20:06:09,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 1242 states have (on average 2.9919484702093397) internal successors, (3716), 1242 states have internal predecessors, (3716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:06:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 3716 transitions. [2022-11-20 20:06:09,117 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 3716 transitions. Word has length 36 [2022-11-20 20:06:09,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:06:09,117 INFO L495 AbstractCegarLoop]: Abstraction has 1243 states and 3716 transitions. [2022-11-20 20:06:09,118 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) [2022-11-20 20:06:09,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 3716 transitions. [2022-11-20 20:06:09,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:06:09,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:06:09,119 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] [2022-11-20 20:06:09,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-11-20 20:06:09,119 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:06:09,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:06:09,120 INFO L85 PathProgramCache]: Analyzing trace with hash -804502648, now seen corresponding path program 32 times [2022-11-20 20:06:09,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:06:09,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597300526] [2022-11-20 20:06:09,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:06:09,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:06:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:06:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:06:09,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:06:09,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597300526] [2022-11-20 20:06:09,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597300526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:06:09,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:06:09,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:06:09,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578532885] [2022-11-20 20:06:09,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:06:09,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:06:09,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:06:09,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:06:09,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:06:09,948 INFO L87 Difference]: Start difference. First operand 1243 states and 3716 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) [2022-11-20 20:06:11,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:06:11,328 INFO L93 Difference]: Finished difference Result 2147 states and 5948 transitions. [2022-11-20 20:06:11,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 20:06:11,328 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 [2022-11-20 20:06:11,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:06:11,332 INFO L225 Difference]: With dead ends: 2147 [2022-11-20 20:06:11,332 INFO L226 Difference]: Without dead ends: 2118 [2022-11-20 20:06:11,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=222, Invalid=534, Unknown=0, NotChecked=0, Total=756 [2022-11-20 20:06:11,333 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 280 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:06:11,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 0 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 20:06:11,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2022-11-20 20:06:11,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 1270. [2022-11-20 20:06:11,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 2.976359338061466) internal successors, (3777), 1269 states have internal predecessors, (3777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:06:11,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 3777 transitions. [2022-11-20 20:06:11,355 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 3777 transitions. Word has length 36 [2022-11-20 20:06:11,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:06:11,355 INFO L495 AbstractCegarLoop]: Abstraction has 1270 states and 3777 transitions. [2022-11-20 20:06:11,355 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) [2022-11-20 20:06:11,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 3777 transitions. [2022-11-20 20:06:11,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:06:11,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:06:11,357 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] [2022-11-20 20:06:11,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-11-20 20:06:11,357 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 20:06:11,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:06:11,357 INFO L85 PathProgramCache]: Analyzing trace with hash -428962506, now seen corresponding path program 33 times [2022-11-20 20:06:11,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:06:11,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903826586] [2022-11-20 20:06:11,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:06:11,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:06:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:06:12,122 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:06:12,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:06:12,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903826586] [2022-11-20 20:06:12,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903826586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:06:12,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:06:12,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 20:06:12,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927652919] [2022-11-20 20:06:12,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:06:12,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:06:12,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:06:12,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:06:12,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:06:12,124 INFO L87 Difference]: Start difference. First operand 1270 states and 3777 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)