./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_d9692c6c-dbf2-449f-a6a2-700d647dd987/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9692c6c-dbf2-449f-a6a2-700d647dd987/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9692c6c-dbf2-449f-a6a2-700d647dd987/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9692c6c-dbf2-449f-a6a2-700d647dd987/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9692c6c-dbf2-449f-a6a2-700d647dd987/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9692c6c-dbf2-449f-a6a2-700d647dd987/bin/utaipan-g80aRyZoba --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 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 --- 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-b5237d8 [2022-11-22 00:07:08,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:07:08,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:07:08,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:07:08,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:07:08,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:07:08,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:07:08,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:07:08,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:07:08,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:07:08,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:07:08,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:07:08,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:07:08,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:07:08,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:07:08,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:07:08,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:07:08,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:07:08,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:07:08,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:07:08,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:07:08,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:07:08,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:07:08,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:07:08,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:07:08,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:07:08,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:07:08,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:07:08,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:07:08,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:07:08,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:07:08,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:07:08,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:07:08,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:07:08,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:07:08,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:07:08,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:07:08,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:07:08,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:07:08,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:07:08,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:07:08,130 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9692c6c-dbf2-449f-a6a2-700d647dd987/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 00:07:08,164 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:07:08,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:07:08,165 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:07:08,165 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:07:08,165 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:07:08,166 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:07:08,166 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:07:08,166 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:07:08,166 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:07:08,171 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:07:08,172 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:07:08,172 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:07:08,172 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:07:08,172 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:07:08,173 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:07:08,175 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:07:08,175 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:07:08,175 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:07:08,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:07:08,176 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 00:07:08,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:07:08,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 00:07:08,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:07:08,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:07:08,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:07:08,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:07:08,178 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 00:07:08,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:07:08,179 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:07:08,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:07:08,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:07:08,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:07:08,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:07:08,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:07:08,180 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:07:08,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:07:08,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:07:08,182 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:07:08,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:07:08,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:07:08,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:07:08,183 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_d9692c6c-dbf2-449f-a6a2-700d647dd987/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9692c6c-dbf2-449f-a6a2-700d647dd987/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 [2022-11-22 00:07:08,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:07:08,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:07:08,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:07:08,517 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:07:08,518 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:07:08,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9692c6c-dbf2-449f-a6a2-700d647dd987/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2022-11-22 00:07:11,619 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:07:11,875 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:07:11,875 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9692c6c-dbf2-449f-a6a2-700d647dd987/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2022-11-22 00:07:11,883 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9692c6c-dbf2-449f-a6a2-700d647dd987/bin/utaipan-g80aRyZoba/data/954f2839a/7a0caba025964b66b06eac4ac7b1d098/FLAGae4816bf0 [2022-11-22 00:07:11,906 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9692c6c-dbf2-449f-a6a2-700d647dd987/bin/utaipan-g80aRyZoba/data/954f2839a/7a0caba025964b66b06eac4ac7b1d098 [2022-11-22 00:07:11,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:07:11,915 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:07:11,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:07:11,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:07:11,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:07:11,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:07:11" (1/1) ... [2022-11-22 00:07:11,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11aa2483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:11, skipping insertion in model container [2022-11-22 00:07:11,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:07:11" (1/1) ... [2022-11-22 00:07:11,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:07:11,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:07:12,204 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_d9692c6c-dbf2-449f-a6a2-700d647dd987/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4722,4735] [2022-11-22 00:07:12,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:07:12,229 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:07:12,262 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_d9692c6c-dbf2-449f-a6a2-700d647dd987/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4722,4735] [2022-11-22 00:07:12,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:07:12,278 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:07:12,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:12 WrapperNode [2022-11-22 00:07:12,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:07:12,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:07:12,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:07:12,281 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:07:12,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:12" (1/1) ... [2022-11-22 00:07:12,299 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:12" (1/1) ... [2022-11-22 00:07:12,326 INFO L138 Inliner]: procedures = 25, calls = 98, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 253 [2022-11-22 00:07:12,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:07:12,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:07:12,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:07:12,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:07:12,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:12" (1/1) ... [2022-11-22 00:07:12,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:12" (1/1) ... [2022-11-22 00:07:12,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:12" (1/1) ... [2022-11-22 00:07:12,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:12" (1/1) ... [2022-11-22 00:07:12,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:12" (1/1) ... [2022-11-22 00:07:12,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:12" (1/1) ... [2022-11-22 00:07:12,358 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:12" (1/1) ... [2022-11-22 00:07:12,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:12" (1/1) ... [2022-11-22 00:07:12,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:07:12,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:07:12,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:07:12,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:07:12,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:12" (1/1) ... [2022-11-22 00:07:12,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:07:12,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9692c6c-dbf2-449f-a6a2-700d647dd987/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:07:12,404 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9692c6c-dbf2-449f-a6a2-700d647dd987/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:07:12,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9692c6c-dbf2-449f-a6a2-700d647dd987/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:07:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:07:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:07:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:07:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:07:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-22 00:07:12,465 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-22 00:07:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-22 00:07:12,465 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-22 00:07:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-22 00:07:12,465 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-22 00:07:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-22 00:07:12,466 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-22 00:07:12,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:07:12,466 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-22 00:07:12,466 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-22 00:07:12,466 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-22 00:07:12,466 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-22 00:07:12,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-22 00:07:12,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-22 00:07:12,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:07:12,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:07:12,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:07:12,469 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 00:07:12,635 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:07:12,639 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:07:13,151 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:07:13,259 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:07:13,267 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 00:07:13,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:07:13 BoogieIcfgContainer [2022-11-22 00:07:13,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:07:13,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:07:13,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:07:13,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:07:13,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:07:11" (1/3) ... [2022-11-22 00:07:13,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aeb8b3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:07:13, skipping insertion in model container [2022-11-22 00:07:13,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:07:12" (2/3) ... [2022-11-22 00:07:13,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aeb8b3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:07:13, skipping insertion in model container [2022-11-22 00:07:13,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:07:13" (3/3) ... [2022-11-22 00:07:13,288 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2022-11-22 00:07:13,301 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-22 00:07:13,312 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:07:13,313 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 00:07:13,313 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 00:07:13,480 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-11-22 00:07:13,518 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 00:07:13,534 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 246 places, 235 transitions, 542 flow [2022-11-22 00:07:13,538 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 246 places, 235 transitions, 542 flow [2022-11-22 00:07:13,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 235 transitions, 542 flow [2022-11-22 00:07:13,702 INFO L130 PetriNetUnfolder]: 8/207 cut-off events. [2022-11-22 00:07:13,703 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-22 00:07:13,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 207 events. 8/207 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 238 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 177. Up to 3 conditions per place. [2022-11-22 00:07:13,720 INFO L119 LiptonReduction]: Number of co-enabled transitions 7736 [2022-11-22 00:07:20,916 INFO L134 LiptonReduction]: Checked pairs total: 43996 [2022-11-22 00:07:20,916 INFO L136 LiptonReduction]: Total number of compositions: 174 [2022-11-22 00:07:20,925 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 99 places, 86 transitions, 244 flow [2022-11-22 00:07:21,998 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 18624 states, 18623 states have (on average 4.349943618106642) internal successors, (81009), 18623 states have internal predecessors, (81009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:22,023 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:07:22,031 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;@57ae8591, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:07:22,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-22 00:07:22,080 INFO L276 IsEmpty]: Start isEmpty. Operand has 18624 states, 18623 states have (on average 4.349943618106642) internal successors, (81009), 18623 states have internal predecessors, (81009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:22,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-22 00:07:22,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:07:22,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:07:22,291 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:07:22,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:07:22,299 INFO L85 PathProgramCache]: Analyzing trace with hash 567602473, now seen corresponding path program 1 times [2022-11-22 00:07:22,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:07:22,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097021059] [2022-11-22 00:07:22,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:07:22,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:07:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:07:22,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:07:22,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:07:22,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097021059] [2022-11-22 00:07:22,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097021059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:07:22,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:07:22,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:07:22,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483356033] [2022-11-22 00:07:22,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:07:22,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 00:07:22,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:07:22,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 00:07:22,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 00:07:22,679 INFO L87 Difference]: Start difference. First operand has 18624 states, 18623 states have (on average 4.349943618106642) internal successors, (81009), 18623 states have internal predecessors, (81009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:23,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:07:23,207 INFO L93 Difference]: Finished difference Result 18624 states and 80623 transitions. [2022-11-22 00:07:23,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 00:07:23,209 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-11-22 00:07:23,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:07:23,427 INFO L225 Difference]: With dead ends: 18624 [2022-11-22 00:07:23,428 INFO L226 Difference]: Without dead ends: 18624 [2022-11-22 00:07:23,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 00:07:23,432 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:07:23,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:07:23,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18624 states. [2022-11-22 00:07:24,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18624 to 18624. [2022-11-22 00:07:24,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18624 states, 18623 states have (on average 4.329216560167535) internal successors, (80623), 18623 states have internal predecessors, (80623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:25,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18624 states to 18624 states and 80623 transitions. [2022-11-22 00:07:25,213 INFO L78 Accepts]: Start accepts. Automaton has 18624 states and 80623 transitions. Word has length 55 [2022-11-22 00:07:25,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:07:25,214 INFO L495 AbstractCegarLoop]: Abstraction has 18624 states and 80623 transitions. [2022-11-22 00:07:25,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:25,215 INFO L276 IsEmpty]: Start isEmpty. Operand 18624 states and 80623 transitions. [2022-11-22 00:07:25,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:07:25,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:07:25,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:07:25,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:07:25,307 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:07:25,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:07:25,308 INFO L85 PathProgramCache]: Analyzing trace with hash -901178867, now seen corresponding path program 1 times [2022-11-22 00:07:25,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:07:25,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760440668] [2022-11-22 00:07:25,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:07:25,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:07:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:07:26,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:07:26,248 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:07:26,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760440668] [2022-11-22 00:07:26,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760440668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:07:26,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:07:26,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:07:26,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880555084] [2022-11-22 00:07:26,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:07:26,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:07:26,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:07:26,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:07:26,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:07:26,252 INFO L87 Difference]: Start difference. First operand 18624 states and 80623 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:26,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:07:26,872 INFO L93 Difference]: Finished difference Result 17088 states and 73063 transitions. [2022-11-22 00:07:26,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:07:26,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:07:26,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:07:27,006 INFO L225 Difference]: With dead ends: 17088 [2022-11-22 00:07:27,007 INFO L226 Difference]: Without dead ends: 17088 [2022-11-22 00:07:27,008 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 [2022-11-22 00:07:27,010 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 62 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:07:27,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 71 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:07:27,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17088 states. [2022-11-22 00:07:27,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17088 to 17088. [2022-11-22 00:07:27,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17088 states, 17087 states have (on average 4.275940773687599) internal successors, (73063), 17087 states have internal predecessors, (73063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:28,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17088 states to 17088 states and 73063 transitions. [2022-11-22 00:07:28,295 INFO L78 Accepts]: Start accepts. Automaton has 17088 states and 73063 transitions. Word has length 63 [2022-11-22 00:07:28,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:07:28,296 INFO L495 AbstractCegarLoop]: Abstraction has 17088 states and 73063 transitions. [2022-11-22 00:07:28,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:28,297 INFO L276 IsEmpty]: Start isEmpty. Operand 17088 states and 73063 transitions. [2022-11-22 00:07:28,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:07:28,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:07:28,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:07:28,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:07:28,382 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:07:28,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:07:28,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1397668173, now seen corresponding path program 2 times [2022-11-22 00:07:28,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:07:28,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780798147] [2022-11-22 00:07:28,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:07:28,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:07:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:07:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:07:29,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:07:29,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780798147] [2022-11-22 00:07:29,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780798147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:07:29,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:07:29,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-22 00:07:29,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135566705] [2022-11-22 00:07:29,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:07:29,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-22 00:07:29,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:07:29,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-22 00:07:29,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-11-22 00:07:29,783 INFO L87 Difference]: Start difference. First operand 17088 states and 73063 transitions. Second operand has 15 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:34,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:07:34,173 INFO L93 Difference]: Finished difference Result 22197 states and 92944 transitions. [2022-11-22 00:07:34,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-22 00:07:34,174 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:07:34,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:07:34,333 INFO L225 Difference]: With dead ends: 22197 [2022-11-22 00:07:34,333 INFO L226 Difference]: Without dead ends: 21816 [2022-11-22 00:07:34,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=169, Invalid=1471, Unknown=0, NotChecked=0, Total=1640 [2022-11-22 00:07:34,339 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 728 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 4823 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 4827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 4823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:07:34,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1541 Invalid, 4827 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 4823 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-22 00:07:34,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21816 states. [2022-11-22 00:07:35,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21816 to 18876. [2022-11-22 00:07:35,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18876 states, 18875 states have (on average 4.233377483443709) internal successors, (79905), 18875 states have internal predecessors, (79905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:35,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18876 states to 18876 states and 79905 transitions. [2022-11-22 00:07:35,556 INFO L78 Accepts]: Start accepts. Automaton has 18876 states and 79905 transitions. Word has length 63 [2022-11-22 00:07:35,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:07:35,558 INFO L495 AbstractCegarLoop]: Abstraction has 18876 states and 79905 transitions. [2022-11-22 00:07:35,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:35,558 INFO L276 IsEmpty]: Start isEmpty. Operand 18876 states and 79905 transitions. [2022-11-22 00:07:35,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:07:35,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:07:35,664 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:07:35,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:07:35,664 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:07:35,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:07:35,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1621382643, now seen corresponding path program 3 times [2022-11-22 00:07:35,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:07:35,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335280090] [2022-11-22 00:07:35,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:07:35,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:07:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:07:37,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:07:37,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:07:37,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335280090] [2022-11-22 00:07:37,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335280090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:07:37,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:07:37,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-22 00:07:37,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091142961] [2022-11-22 00:07:37,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:07:37,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-22 00:07:37,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:07:37,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-22 00:07:37,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2022-11-22 00:07:37,901 INFO L87 Difference]: Start difference. First operand 18876 states and 79905 transitions. Second operand has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:44,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:07:44,756 INFO L93 Difference]: Finished difference Result 28154 states and 114858 transitions. [2022-11-22 00:07:44,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-22 00:07:44,756 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:07:44,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:07:45,048 INFO L225 Difference]: With dead ends: 28154 [2022-11-22 00:07:45,049 INFO L226 Difference]: Without dead ends: 27292 [2022-11-22 00:07:45,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=294, Invalid=2676, Unknown=0, NotChecked=0, Total=2970 [2022-11-22 00:07:45,052 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 1151 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 7815 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 2507 SdHoareTripleChecker+Invalid, 7845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 7815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:07:45,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 2507 Invalid, 7845 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 7815 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-22 00:07:45,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27292 states. [2022-11-22 00:07:46,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27292 to 19986. [2022-11-22 00:07:46,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19986 states, 19985 states have (on average 4.198749061796347) internal successors, (83912), 19985 states have internal predecessors, (83912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:46,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19986 states to 19986 states and 83912 transitions. [2022-11-22 00:07:46,202 INFO L78 Accepts]: Start accepts. Automaton has 19986 states and 83912 transitions. Word has length 63 [2022-11-22 00:07:46,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:07:46,206 INFO L495 AbstractCegarLoop]: Abstraction has 19986 states and 83912 transitions. [2022-11-22 00:07:46,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:46,207 INFO L276 IsEmpty]: Start isEmpty. Operand 19986 states and 83912 transitions. [2022-11-22 00:07:46,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:07:46,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:07:46,288 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:07:46,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:07:46,290 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:07:46,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:07:46,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1944353091, now seen corresponding path program 4 times [2022-11-22 00:07:46,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:07:46,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295562538] [2022-11-22 00:07:46,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:07:46,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:07:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:07:47,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:07:47,729 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:07:47,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295562538] [2022-11-22 00:07:47,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295562538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:07:47,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:07:47,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-22 00:07:47,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692282911] [2022-11-22 00:07:47,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:07:47,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-22 00:07:47,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:07:47,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-22 00:07:47,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2022-11-22 00:07:47,731 INFO L87 Difference]: Start difference. First operand 19986 states and 83912 transitions. Second operand has 16 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:52,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:07:52,162 INFO L93 Difference]: Finished difference Result 23851 states and 98350 transitions. [2022-11-22 00:07:52,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-22 00:07:52,162 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:07:52,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:07:52,270 INFO L225 Difference]: With dead ends: 23851 [2022-11-22 00:07:52,270 INFO L226 Difference]: Without dead ends: 23410 [2022-11-22 00:07:52,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=196, Invalid=1874, Unknown=0, NotChecked=0, Total=2070 [2022-11-22 00:07:52,272 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 836 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 5640 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 5648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 5640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:07:52,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 1744 Invalid, 5648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 5640 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-22 00:07:52,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23410 states. [2022-11-22 00:07:52,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23410 to 19946. [2022-11-22 00:07:52,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19946 states, 19945 states have (on average 4.197041865129105) internal successors, (83710), 19945 states have internal predecessors, (83710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:53,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19946 states to 19946 states and 83710 transitions. [2022-11-22 00:07:53,040 INFO L78 Accepts]: Start accepts. Automaton has 19946 states and 83710 transitions. Word has length 63 [2022-11-22 00:07:53,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:07:53,041 INFO L495 AbstractCegarLoop]: Abstraction has 19946 states and 83710 transitions. [2022-11-22 00:07:53,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:07:53,042 INFO L276 IsEmpty]: Start isEmpty. Operand 19946 states and 83710 transitions. [2022-11-22 00:07:53,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:07:53,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:07:53,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:07:53,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:07:53,336 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:07:53,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:07:53,337 INFO L85 PathProgramCache]: Analyzing trace with hash 986315575, now seen corresponding path program 5 times [2022-11-22 00:07:53,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:07:53,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806878312] [2022-11-22 00:07:53,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:07:53,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:07:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:07:55,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:07:55,214 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:07:55,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806878312] [2022-11-22 00:07:55,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806878312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:07:55,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:07:55,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-22 00:07:55,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332651300] [2022-11-22 00:07:55,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:07:55,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-22 00:07:55,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:07:55,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-22 00:07:55,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2022-11-22 00:07:55,217 INFO L87 Difference]: Start difference. First operand 19946 states and 83710 transitions. Second operand has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:01,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:08:01,992 INFO L93 Difference]: Finished difference Result 26059 states and 107383 transitions. [2022-11-22 00:08:01,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-22 00:08:01,992 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:08:01,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:08:02,113 INFO L225 Difference]: With dead ends: 26059 [2022-11-22 00:08:02,113 INFO L226 Difference]: Without dead ends: 25798 [2022-11-22 00:08:02,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=221, Invalid=1941, Unknown=0, NotChecked=0, Total=2162 [2022-11-22 00:08:02,117 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 901 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 7727 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 2608 SdHoareTripleChecker+Invalid, 7747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 7727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:08:02,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 2608 Invalid, 7747 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 7727 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-22 00:08:02,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25798 states. [2022-11-22 00:08:02,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25798 to 20026. [2022-11-22 00:08:02,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20026 states, 20025 states have (on average 4.1924594257178525) internal successors, (83954), 20025 states have internal predecessors, (83954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:02,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20026 states to 20026 states and 83954 transitions. [2022-11-22 00:08:02,910 INFO L78 Accepts]: Start accepts. Automaton has 20026 states and 83954 transitions. Word has length 63 [2022-11-22 00:08:02,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:08:02,910 INFO L495 AbstractCegarLoop]: Abstraction has 20026 states and 83954 transitions. [2022-11-22 00:08:02,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:02,910 INFO L276 IsEmpty]: Start isEmpty. Operand 20026 states and 83954 transitions. [2022-11-22 00:08:03,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:08:03,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:03,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:08:03,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 00:08:03,175 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:08:03,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:03,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1269006953, now seen corresponding path program 6 times [2022-11-22 00:08:03,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:03,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962202643] [2022-11-22 00:08:03,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:03,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:04,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:08:04,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:08:04,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962202643] [2022-11-22 00:08:04,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962202643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:08:04,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:08:04,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-22 00:08:04,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725313188] [2022-11-22 00:08:04,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:08:04,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-22 00:08:04,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:08:04,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-22 00:08:04,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2022-11-22 00:08:04,308 INFO L87 Difference]: Start difference. First operand 20026 states and 83954 transitions. Second operand has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:08,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:08:08,479 INFO L93 Difference]: Finished difference Result 22687 states and 94083 transitions. [2022-11-22 00:08:08,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-22 00:08:08,479 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:08:08,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:08:08,553 INFO L225 Difference]: With dead ends: 22687 [2022-11-22 00:08:08,554 INFO L226 Difference]: Without dead ends: 22466 [2022-11-22 00:08:08,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=175, Invalid=1631, Unknown=0, NotChecked=0, Total=1806 [2022-11-22 00:08:08,555 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 802 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 5345 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 5351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 5345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:08:08,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 1804 Invalid, 5351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 5345 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-22 00:08:08,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22466 states. [2022-11-22 00:08:09,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22466 to 20146. [2022-11-22 00:08:09,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20146 states, 20145 states have (on average 4.189625217175478) internal successors, (84400), 20145 states have internal predecessors, (84400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:09,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20146 states to 20146 states and 84400 transitions. [2022-11-22 00:08:09,197 INFO L78 Accepts]: Start accepts. Automaton has 20146 states and 84400 transitions. Word has length 63 [2022-11-22 00:08:09,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:08:09,200 INFO L495 AbstractCegarLoop]: Abstraction has 20146 states and 84400 transitions. [2022-11-22 00:08:09,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:09,200 INFO L276 IsEmpty]: Start isEmpty. Operand 20146 states and 84400 transitions. [2022-11-22 00:08:09,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:08:09,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:09,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:08:09,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 00:08:09,248 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:08:09,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:09,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1591977401, now seen corresponding path program 7 times [2022-11-22 00:08:09,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:09,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646999579] [2022-11-22 00:08:09,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:09,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:10,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:08:10,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:08:10,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646999579] [2022-11-22 00:08:10,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646999579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:08:10,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:08:10,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-22 00:08:10,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676802644] [2022-11-22 00:08:10,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:08:10,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-22 00:08:10,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:08:10,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-22 00:08:10,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2022-11-22 00:08:10,333 INFO L87 Difference]: Start difference. First operand 20146 states and 84400 transitions. Second operand has 16 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:14,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:08:14,658 INFO L93 Difference]: Finished difference Result 22633 states and 94126 transitions. [2022-11-22 00:08:14,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-22 00:08:14,660 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:08:14,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:08:14,728 INFO L225 Difference]: With dead ends: 22633 [2022-11-22 00:08:14,728 INFO L226 Difference]: Without dead ends: 22192 [2022-11-22 00:08:14,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=206, Invalid=1956, Unknown=0, NotChecked=0, Total=2162 [2022-11-22 00:08:14,729 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 844 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 5133 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 5142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 5133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:08:14,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 1626 Invalid, 5142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 5133 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-22 00:08:14,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22192 states. [2022-11-22 00:08:15,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22192 to 20042. [2022-11-22 00:08:15,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20042 states, 20041 states have (on average 4.196297589940622) internal successors, (84098), 20041 states have internal predecessors, (84098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:15,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20042 states to 20042 states and 84098 transitions. [2022-11-22 00:08:15,296 INFO L78 Accepts]: Start accepts. Automaton has 20042 states and 84098 transitions. Word has length 63 [2022-11-22 00:08:15,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:08:15,297 INFO L495 AbstractCegarLoop]: Abstraction has 20042 states and 84098 transitions. [2022-11-22 00:08:15,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:15,297 INFO L276 IsEmpty]: Start isEmpty. Operand 20042 states and 84098 transitions. [2022-11-22 00:08:15,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:08:15,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:15,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:08:15,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 00:08:15,340 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:08:15,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:15,341 INFO L85 PathProgramCache]: Analyzing trace with hash 934301285, now seen corresponding path program 8 times [2022-11-22 00:08:15,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:15,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135430072] [2022-11-22 00:08:15,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:15,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:16,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:08:16,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:08:16,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135430072] [2022-11-22 00:08:16,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135430072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:08:16,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:08:16,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-22 00:08:16,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177453431] [2022-11-22 00:08:16,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:08:16,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-22 00:08:16,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:08:16,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-22 00:08:16,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2022-11-22 00:08:16,463 INFO L87 Difference]: Start difference. First operand 20042 states and 84098 transitions. Second operand has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:21,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:08:21,264 INFO L93 Difference]: Finished difference Result 26001 states and 107437 transitions. [2022-11-22 00:08:21,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-22 00:08:21,264 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:08:21,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:08:21,347 INFO L225 Difference]: With dead ends: 26001 [2022-11-22 00:08:21,347 INFO L226 Difference]: Without dead ends: 25620 [2022-11-22 00:08:21,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=208, Invalid=2048, Unknown=0, NotChecked=0, Total=2256 [2022-11-22 00:08:21,348 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 949 mSDsluCounter, 2259 mSDsCounter, 0 mSdLazyCounter, 6918 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 2421 SdHoareTripleChecker+Invalid, 6929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 6918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:08:21,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 2421 Invalid, 6929 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 6918 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-22 00:08:21,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25620 states. [2022-11-22 00:08:21,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25620 to 21206. [2022-11-22 00:08:21,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21206 states, 21205 states have (on average 4.170337184626267) internal successors, (88432), 21205 states have internal predecessors, (88432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:22,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21206 states to 21206 states and 88432 transitions. [2022-11-22 00:08:22,025 INFO L78 Accepts]: Start accepts. Automaton has 21206 states and 88432 transitions. Word has length 63 [2022-11-22 00:08:22,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:08:22,025 INFO L495 AbstractCegarLoop]: Abstraction has 21206 states and 88432 transitions. [2022-11-22 00:08:22,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:22,025 INFO L276 IsEmpty]: Start isEmpty. Operand 21206 states and 88432 transitions. [2022-11-22 00:08:22,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:08:22,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:22,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:08:22,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 00:08:22,259 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:08:22,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:22,260 INFO L85 PathProgramCache]: Analyzing trace with hash -683798557, now seen corresponding path program 9 times [2022-11-22 00:08:22,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:22,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881242354] [2022-11-22 00:08:22,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:22,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:23,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:08:23,113 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:08:23,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881242354] [2022-11-22 00:08:23,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881242354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:08:23,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:08:23,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 00:08:23,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616069754] [2022-11-22 00:08:23,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:08:23,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 00:08:23,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:08:23,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 00:08:23,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2022-11-22 00:08:23,114 INFO L87 Difference]: Start difference. First operand 21206 states and 88432 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:27,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:08:27,554 INFO L93 Difference]: Finished difference Result 25767 states and 106956 transitions. [2022-11-22 00:08:27,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-22 00:08:27,555 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:08:27,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:08:27,630 INFO L225 Difference]: With dead ends: 25767 [2022-11-22 00:08:27,631 INFO L226 Difference]: Without dead ends: 25466 [2022-11-22 00:08:27,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=211, Invalid=1951, Unknown=0, NotChecked=0, Total=2162 [2022-11-22 00:08:27,632 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 852 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 6083 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 2118 SdHoareTripleChecker+Invalid, 6094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 6083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:08:27,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 2118 Invalid, 6094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 6083 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-22 00:08:27,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25466 states. [2022-11-22 00:08:28,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25466 to 21206. [2022-11-22 00:08:28,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21206 states, 21205 states have (on average 4.16845083706673) internal successors, (88392), 21205 states have internal predecessors, (88392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:28,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21206 states to 21206 states and 88392 transitions. [2022-11-22 00:08:28,549 INFO L78 Accepts]: Start accepts. Automaton has 21206 states and 88392 transitions. Word has length 63 [2022-11-22 00:08:28,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:08:28,550 INFO L495 AbstractCegarLoop]: Abstraction has 21206 states and 88392 transitions. [2022-11-22 00:08:28,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:28,550 INFO L276 IsEmpty]: Start isEmpty. Operand 21206 states and 88392 transitions. [2022-11-22 00:08:28,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:08:28,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:28,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:08:28,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 00:08:28,612 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:08:28,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:28,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1355846211, now seen corresponding path program 10 times [2022-11-22 00:08:28,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:28,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943552384] [2022-11-22 00:08:28,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:28,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:29,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:08:29,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:08:29,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943552384] [2022-11-22 00:08:29,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943552384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:08:29,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:08:29,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-22 00:08:29,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902469946] [2022-11-22 00:08:29,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:08:29,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-22 00:08:29,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:08:29,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-22 00:08:29,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2022-11-22 00:08:29,947 INFO L87 Difference]: Start difference. First operand 21206 states and 88392 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:39,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:08:39,479 INFO L93 Difference]: Finished difference Result 36307 states and 152794 transitions. [2022-11-22 00:08:39,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-11-22 00:08:39,479 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:08:39,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:08:39,586 INFO L225 Difference]: With dead ends: 36307 [2022-11-22 00:08:39,586 INFO L226 Difference]: Without dead ends: 35966 [2022-11-22 00:08:39,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2167 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=608, Invalid=6532, Unknown=0, NotChecked=0, Total=7140 [2022-11-22 00:08:39,590 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1577 mSDsluCounter, 2827 mSDsCounter, 0 mSdLazyCounter, 9917 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 9995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 9917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:08:39,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 3001 Invalid, 9995 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 9917 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-22 00:08:39,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35966 states. [2022-11-22 00:08:40,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35966 to 21414. [2022-11-22 00:08:40,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21414 states, 21413 states have (on average 4.1676551627516) internal successors, (89242), 21413 states have internal predecessors, (89242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:40,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21414 states to 21414 states and 89242 transitions. [2022-11-22 00:08:40,321 INFO L78 Accepts]: Start accepts. Automaton has 21414 states and 89242 transitions. Word has length 63 [2022-11-22 00:08:40,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:08:40,321 INFO L495 AbstractCegarLoop]: Abstraction has 21414 states and 89242 transitions. [2022-11-22 00:08:40,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:40,321 INFO L276 IsEmpty]: Start isEmpty. Operand 21414 states and 89242 transitions. [2022-11-22 00:08:40,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:08:40,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:40,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:08:40,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 00:08:40,360 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:08:40,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:40,361 INFO L85 PathProgramCache]: Analyzing trace with hash 2096797197, now seen corresponding path program 11 times [2022-11-22 00:08:40,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:40,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136806355] [2022-11-22 00:08:40,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:40,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:41,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:08:41,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:08:41,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136806355] [2022-11-22 00:08:41,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136806355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:08:41,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:08:41,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 00:08:41,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128864937] [2022-11-22 00:08:41,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:08:41,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 00:08:41,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:08:41,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 00:08:41,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2022-11-22 00:08:41,445 INFO L87 Difference]: Start difference. First operand 21414 states and 89242 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:47,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:08:47,827 INFO L93 Difference]: Finished difference Result 29187 states and 120502 transitions. [2022-11-22 00:08:47,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-22 00:08:47,827 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:08:47,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:08:48,025 INFO L225 Difference]: With dead ends: 29187 [2022-11-22 00:08:48,025 INFO L226 Difference]: Without dead ends: 28606 [2022-11-22 00:08:48,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=303, Invalid=3237, Unknown=0, NotChecked=0, Total=3540 [2022-11-22 00:08:48,027 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 971 mSDsluCounter, 2481 mSDsCounter, 0 mSdLazyCounter, 8221 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 2676 SdHoareTripleChecker+Invalid, 8239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 8221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:08:48,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 2676 Invalid, 8239 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 8221 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-22 00:08:48,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28606 states. [2022-11-22 00:08:48,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28606 to 22642. [2022-11-22 00:08:48,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22642 states, 22641 states have (on average 4.141424848725763) internal successors, (93766), 22641 states have internal predecessors, (93766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:48,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22642 states to 22642 states and 93766 transitions. [2022-11-22 00:08:48,867 INFO L78 Accepts]: Start accepts. Automaton has 22642 states and 93766 transitions. Word has length 63 [2022-11-22 00:08:48,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:08:48,868 INFO L495 AbstractCegarLoop]: Abstraction has 22642 states and 93766 transitions. [2022-11-22 00:08:48,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:48,868 INFO L276 IsEmpty]: Start isEmpty. Operand 22642 states and 93766 transitions. [2022-11-22 00:08:48,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:08:48,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:48,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:08:48,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 00:08:48,913 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:08:48,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:48,913 INFO L85 PathProgramCache]: Analyzing trace with hash -922253619, now seen corresponding path program 12 times [2022-11-22 00:08:48,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:48,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606840700] [2022-11-22 00:08:48,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:48,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:49,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:08:49,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:08:49,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606840700] [2022-11-22 00:08:49,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606840700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:08:49,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:08:49,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-22 00:08:49,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942143283] [2022-11-22 00:08:49,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:08:49,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-22 00:08:49,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:08:49,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-22 00:08:49,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-11-22 00:08:49,725 INFO L87 Difference]: Start difference. First operand 22642 states and 93766 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:56,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:08:56,169 INFO L93 Difference]: Finished difference Result 29261 states and 120421 transitions. [2022-11-22 00:08:56,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-22 00:08:56,170 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:08:56,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:08:56,257 INFO L225 Difference]: With dead ends: 29261 [2022-11-22 00:08:56,257 INFO L226 Difference]: Without dead ends: 28440 [2022-11-22 00:08:56,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=305, Invalid=3355, Unknown=0, NotChecked=0, Total=3660 [2022-11-22 00:08:56,258 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 982 mSDsluCounter, 2694 mSDsCounter, 0 mSdLazyCounter, 8735 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 2889 SdHoareTripleChecker+Invalid, 8756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 8735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:08:56,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 2889 Invalid, 8756 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 8735 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-22 00:08:56,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28440 states. [2022-11-22 00:08:56,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28440 to 20110. [2022-11-22 00:08:56,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20110 states, 20109 states have (on average 4.199811029887115) internal successors, (84454), 20109 states have internal predecessors, (84454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:56,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20110 states to 20110 states and 84454 transitions. [2022-11-22 00:08:56,926 INFO L78 Accepts]: Start accepts. Automaton has 20110 states and 84454 transitions. Word has length 63 [2022-11-22 00:08:56,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:08:56,926 INFO L495 AbstractCegarLoop]: Abstraction has 20110 states and 84454 transitions. [2022-11-22 00:08:56,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:56,927 INFO L276 IsEmpty]: Start isEmpty. Operand 20110 states and 84454 transitions. [2022-11-22 00:08:56,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:08:56,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:56,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:08:56,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 00:08:56,971 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:08:56,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:56,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1046281231, now seen corresponding path program 13 times [2022-11-22 00:08:56,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:56,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122960560] [2022-11-22 00:08:56,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:56,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:57,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:08:57,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:08:57,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122960560] [2022-11-22 00:08:57,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122960560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:08:57,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:08:57,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 00:08:57,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144475968] [2022-11-22 00:08:57,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:08:57,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 00:08:57,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:08:57,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 00:08:57,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2022-11-22 00:08:57,988 INFO L87 Difference]: Start difference. First operand 20110 states and 84454 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:09:03,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:09:03,342 INFO L93 Difference]: Finished difference Result 24543 states and 103611 transitions. [2022-11-22 00:09:03,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-22 00:09:03,342 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:09:03,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:09:03,415 INFO L225 Difference]: With dead ends: 24543 [2022-11-22 00:09:03,415 INFO L226 Difference]: Without dead ends: 24162 [2022-11-22 00:09:03,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=263, Invalid=2707, Unknown=0, NotChecked=0, Total=2970 [2022-11-22 00:09:03,416 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 898 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 7163 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 2331 SdHoareTripleChecker+Invalid, 7179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 7163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:09:03,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 2331 Invalid, 7179 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 7163 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-22 00:09:03,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24162 states. [2022-11-22 00:09:03,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24162 to 20130. [2022-11-22 00:09:03,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20130 states, 20129 states have (on average 4.198618908043122) internal successors, (84514), 20129 states have internal predecessors, (84514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:09:04,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20130 states to 20130 states and 84514 transitions. [2022-11-22 00:09:04,046 INFO L78 Accepts]: Start accepts. Automaton has 20130 states and 84514 transitions. Word has length 63 [2022-11-22 00:09:04,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:09:04,046 INFO L495 AbstractCegarLoop]: Abstraction has 20130 states and 84514 transitions. [2022-11-22 00:09:04,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:09:04,046 INFO L276 IsEmpty]: Start isEmpty. Operand 20130 states and 84514 transitions. [2022-11-22 00:09:04,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:09:04,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:09:04,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:09:04,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 00:09:04,086 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:09:04,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:09:04,087 INFO L85 PathProgramCache]: Analyzing trace with hash 289927381, now seen corresponding path program 14 times [2022-11-22 00:09:04,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:09:04,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309014380] [2022-11-22 00:09:04,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:09:04,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:09:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:09:05,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:09:05,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:09:05,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309014380] [2022-11-22 00:09:05,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309014380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:09:05,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:09:05,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-22 00:09:05,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933442081] [2022-11-22 00:09:05,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:09:05,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-22 00:09:05,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:09:05,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-22 00:09:05,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-11-22 00:09:05,161 INFO L87 Difference]: Start difference. First operand 20130 states and 84514 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:09:10,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:09:10,972 INFO L93 Difference]: Finished difference Result 24661 states and 103829 transitions. [2022-11-22 00:09:10,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-22 00:09:10,973 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:09:10,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:09:11,055 INFO L225 Difference]: With dead ends: 24661 [2022-11-22 00:09:11,055 INFO L226 Difference]: Without dead ends: 24380 [2022-11-22 00:09:11,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=285, Invalid=3137, Unknown=0, NotChecked=0, Total=3422 [2022-11-22 00:09:11,057 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 995 mSDsluCounter, 2353 mSDsCounter, 0 mSdLazyCounter, 7789 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 7809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 7789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:09:11,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 2523 Invalid, 7809 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 7789 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-22 00:09:11,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24380 states. [2022-11-22 00:09:11,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24380 to 20158. [2022-11-22 00:09:11,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20158 states, 20157 states have (on average 4.197549238477948) internal successors, (84610), 20157 states have internal predecessors, (84610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:09:11,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20158 states to 20158 states and 84610 transitions. [2022-11-22 00:09:11,686 INFO L78 Accepts]: Start accepts. Automaton has 20158 states and 84610 transitions. Word has length 63 [2022-11-22 00:09:11,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:09:11,686 INFO L495 AbstractCegarLoop]: Abstraction has 20158 states and 84610 transitions. [2022-11-22 00:09:11,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:09:11,687 INFO L276 IsEmpty]: Start isEmpty. Operand 20158 states and 84610 transitions. [2022-11-22 00:09:11,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:09:11,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:09:11,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:09:11,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 00:09:11,737 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:09:11,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:09:11,737 INFO L85 PathProgramCache]: Analyzing trace with hash -277668397, now seen corresponding path program 15 times [2022-11-22 00:09:11,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:09:11,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914821205] [2022-11-22 00:09:11,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:09:11,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:09:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:09:12,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:09:12,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:09:12,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914821205] [2022-11-22 00:09:12,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914821205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:09:12,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:09:12,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-22 00:09:12,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510295397] [2022-11-22 00:09:12,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:09:12,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-22 00:09:12,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:09:12,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-22 00:09:12,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-11-22 00:09:12,809 INFO L87 Difference]: Start difference. First operand 20158 states and 84610 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:09:18,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:09:18,089 INFO L93 Difference]: Finished difference Result 24343 states and 102855 transitions. [2022-11-22 00:09:18,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-22 00:09:18,089 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:09:18,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:09:18,175 INFO L225 Difference]: With dead ends: 24343 [2022-11-22 00:09:18,175 INFO L226 Difference]: Without dead ends: 24086 [2022-11-22 00:09:18,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=238, Invalid=2518, Unknown=0, NotChecked=0, Total=2756 [2022-11-22 00:09:18,176 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 874 mSDsluCounter, 2294 mSDsCounter, 0 mSdLazyCounter, 7260 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 2460 SdHoareTripleChecker+Invalid, 7276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 7260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:09:18,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 2460 Invalid, 7276 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 7260 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-22 00:09:18,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24086 states. [2022-11-22 00:09:18,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24086 to 20138. [2022-11-22 00:09:18,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20138 states, 20137 states have (on average 4.198341361672543) internal successors, (84542), 20137 states have internal predecessors, (84542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:09:18,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20138 states to 20138 states and 84542 transitions. [2022-11-22 00:09:18,755 INFO L78 Accepts]: Start accepts. Automaton has 20138 states and 84542 transitions. Word has length 63 [2022-11-22 00:09:18,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:09:18,755 INFO L495 AbstractCegarLoop]: Abstraction has 20138 states and 84542 transitions. [2022-11-22 00:09:18,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:09:18,755 INFO L276 IsEmpty]: Start isEmpty. Operand 20138 states and 84542 transitions. [2022-11-22 00:09:18,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:09:18,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:09:18,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:09:18,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 00:09:18,790 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:09:18,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:09:18,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1516231995, now seen corresponding path program 16 times [2022-11-22 00:09:18,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:09:18,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048912528] [2022-11-22 00:09:18,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:09:18,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:09:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:09:19,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:09:19,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:09:19,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048912528] [2022-11-22 00:09:19,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048912528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:09:19,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:09:19,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-22 00:09:19,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182227745] [2022-11-22 00:09:19,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:09:19,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-22 00:09:19,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:09:19,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-22 00:09:19,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-11-22 00:09:19,816 INFO L87 Difference]: Start difference. First operand 20138 states and 84542 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:09:25,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:09:25,441 INFO L93 Difference]: Finished difference Result 24701 states and 103971 transitions. [2022-11-22 00:09:25,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-22 00:09:25,442 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:09:25,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:09:25,518 INFO L225 Difference]: With dead ends: 24701 [2022-11-22 00:09:25,518 INFO L226 Difference]: Without dead ends: 24340 [2022-11-22 00:09:25,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=276, Invalid=2916, Unknown=0, NotChecked=0, Total=3192 [2022-11-22 00:09:25,520 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 1015 mSDsluCounter, 2285 mSDsCounter, 0 mSdLazyCounter, 7327 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 2450 SdHoareTripleChecker+Invalid, 7347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 7327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:09:25,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 2450 Invalid, 7347 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [20 Valid, 7327 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-22 00:09:25,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24340 states. [2022-11-22 00:09:26,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24340 to 20154. [2022-11-22 00:09:26,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20154 states, 20153 states have (on average 4.197389966754329) internal successors, (84590), 20153 states have internal predecessors, (84590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:09:26,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20154 states to 20154 states and 84590 transitions. [2022-11-22 00:09:26,210 INFO L78 Accepts]: Start accepts. Automaton has 20154 states and 84590 transitions. Word has length 63 [2022-11-22 00:09:26,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:09:26,211 INFO L495 AbstractCegarLoop]: Abstraction has 20154 states and 84590 transitions. [2022-11-22 00:09:26,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:09:26,211 INFO L276 IsEmpty]: Start isEmpty. Operand 20154 states and 84590 transitions. [2022-11-22 00:09:26,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:09:26,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:09:26,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:09:26,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 00:09:26,261 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:09:26,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:09:26,261 INFO L85 PathProgramCache]: Analyzing trace with hash 934909825, now seen corresponding path program 17 times [2022-11-22 00:09:26,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:09:26,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940685228] [2022-11-22 00:09:26,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:09:26,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:09:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:09:27,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:09:27,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:09:27,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940685228] [2022-11-22 00:09:27,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940685228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:09:27,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:09:27,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-22 00:09:27,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629443155] [2022-11-22 00:09:27,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:09:27,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-22 00:09:27,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:09:27,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-22 00:09:27,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-11-22 00:09:27,080 INFO L87 Difference]: Start difference. First operand 20154 states and 84590 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:09:32,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:09:32,930 INFO L93 Difference]: Finished difference Result 24957 states and 105460 transitions. [2022-11-22 00:09:32,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-22 00:09:32,930 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:09:32,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:09:33,007 INFO L225 Difference]: With dead ends: 24957 [2022-11-22 00:09:33,007 INFO L226 Difference]: Without dead ends: 24732 [2022-11-22 00:09:33,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=271, Invalid=2921, Unknown=0, NotChecked=0, Total=3192 [2022-11-22 00:09:33,008 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 989 mSDsluCounter, 2335 mSDsCounter, 0 mSdLazyCounter, 7442 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 7462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 7442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:09:33,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 2503 Invalid, 7462 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 7442 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-22 00:09:33,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24732 states. [2022-11-22 00:09:33,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24732 to 20146. [2022-11-22 00:09:33,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20146 states, 20145 states have (on average 4.197666914867213) internal successors, (84562), 20145 states have internal predecessors, (84562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:09:33,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20146 states to 20146 states and 84562 transitions. [2022-11-22 00:09:33,639 INFO L78 Accepts]: Start accepts. Automaton has 20146 states and 84562 transitions. Word has length 63 [2022-11-22 00:09:33,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:09:33,640 INFO L495 AbstractCegarLoop]: Abstraction has 20146 states and 84562 transitions. [2022-11-22 00:09:33,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:09:33,640 INFO L276 IsEmpty]: Start isEmpty. Operand 20146 states and 84562 transitions. [2022-11-22 00:09:33,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:09:33,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:09:33,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:09:33,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-22 00:09:33,691 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:09:33,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:09:33,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1183977835, now seen corresponding path program 18 times [2022-11-22 00:09:33,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:09:33,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725136429] [2022-11-22 00:09:33,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:09:33,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:09:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:09:34,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:09:34,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:09:34,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725136429] [2022-11-22 00:09:34,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725136429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:09:34,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:09:34,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-22 00:09:34,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369315349] [2022-11-22 00:09:34,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:09:34,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-22 00:09:34,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:09:34,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-22 00:09:34,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-11-22 00:09:34,554 INFO L87 Difference]: Start difference. First operand 20146 states and 84562 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:09:39,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:09:39,974 INFO L93 Difference]: Finished difference Result 24331 states and 102807 transitions. [2022-11-22 00:09:39,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-22 00:09:39,974 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:09:39,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:09:40,052 INFO L225 Difference]: With dead ends: 24331 [2022-11-22 00:09:40,052 INFO L226 Difference]: Without dead ends: 24078 [2022-11-22 00:09:40,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=245, Invalid=2511, Unknown=0, NotChecked=0, Total=2756 [2022-11-22 00:09:40,053 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 895 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 7151 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 7167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 7151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:09:40,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 2430 Invalid, 7167 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 7151 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-22 00:09:40,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24078 states. [2022-11-22 00:09:40,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24078 to 20130. [2022-11-22 00:09:40,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20130 states, 20129 states have (on average 4.198221471508768) internal successors, (84506), 20129 states have internal predecessors, (84506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:09:40,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20130 states to 20130 states and 84506 transitions. [2022-11-22 00:09:40,711 INFO L78 Accepts]: Start accepts. Automaton has 20130 states and 84506 transitions. Word has length 63 [2022-11-22 00:09:40,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:09:40,711 INFO L495 AbstractCegarLoop]: Abstraction has 20130 states and 84506 transitions. [2022-11-22 00:09:40,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:09:40,712 INFO L276 IsEmpty]: Start isEmpty. Operand 20130 states and 84506 transitions. [2022-11-22 00:09:40,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:09:40,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:09:40,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:09:40,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-22 00:09:40,753 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:09:40,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:09:40,753 INFO L85 PathProgramCache]: Analyzing trace with hash 496074135, now seen corresponding path program 19 times [2022-11-22 00:09:40,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:09:40,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791577546] [2022-11-22 00:09:40,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:09:40,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:09:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:09:42,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:09:42,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:09:42,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791577546] [2022-11-22 00:09:42,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791577546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:09:42,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:09:42,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-22 00:09:42,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363478031] [2022-11-22 00:09:42,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:09:42,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-22 00:09:42,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:09:42,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-22 00:09:42,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2022-11-22 00:09:42,182 INFO L87 Difference]: Start difference. First operand 20130 states and 84506 transitions. Second operand has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:09:49,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:09:49,532 INFO L93 Difference]: Finished difference Result 29147 states and 118240 transitions. [2022-11-22 00:09:49,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-22 00:09:49,532 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:09:49,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:09:49,715 INFO L225 Difference]: With dead ends: 29147 [2022-11-22 00:09:49,715 INFO L226 Difference]: Without dead ends: 28846 [2022-11-22 00:09:49,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=317, Invalid=3105, Unknown=0, NotChecked=0, Total=3422 [2022-11-22 00:09:49,716 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 1147 mSDsluCounter, 2613 mSDsCounter, 0 mSdLazyCounter, 8434 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 8457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 8434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:09:49,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 2770 Invalid, 8457 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 8434 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-22 00:09:49,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28846 states. [2022-11-22 00:09:50,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28846 to 20366. [2022-11-22 00:09:50,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20366 states, 20365 states have (on average 4.1928799410753745) internal successors, (85388), 20365 states have internal predecessors, (85388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:09:50,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20366 states to 20366 states and 85388 transitions. [2022-11-22 00:09:50,355 INFO L78 Accepts]: Start accepts. Automaton has 20366 states and 85388 transitions. Word has length 63 [2022-11-22 00:09:50,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:09:50,356 INFO L495 AbstractCegarLoop]: Abstraction has 20366 states and 85388 transitions. [2022-11-22 00:09:50,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:09:50,356 INFO L276 IsEmpty]: Start isEmpty. Operand 20366 states and 85388 transitions. [2022-11-22 00:09:50,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:09:50,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:09:50,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:09:50,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-22 00:09:50,569 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:09:50,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:09:50,569 INFO L85 PathProgramCache]: Analyzing trace with hash 437332023, now seen corresponding path program 20 times [2022-11-22 00:09:50,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:09:50,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372512629] [2022-11-22 00:09:50,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:09:50,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:09:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:09:51,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:09:51,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:09:51,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372512629] [2022-11-22 00:09:51,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372512629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:09:51,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:09:51,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-22 00:09:51,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152718693] [2022-11-22 00:09:51,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:09:51,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-22 00:09:51,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:09:51,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-22 00:09:51,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2022-11-22 00:09:51,439 INFO L87 Difference]: Start difference. First operand 20366 states and 85388 transitions. Second operand has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:09:56,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:09:56,079 INFO L93 Difference]: Finished difference Result 24815 states and 102894 transitions. [2022-11-22 00:09:56,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-22 00:09:56,079 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:09:56,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:09:56,148 INFO L225 Difference]: With dead ends: 24815 [2022-11-22 00:09:56,148 INFO L226 Difference]: Without dead ends: 24594 [2022-11-22 00:09:56,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=218, Invalid=2232, Unknown=0, NotChecked=0, Total=2450 [2022-11-22 00:09:56,149 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 950 mSDsluCounter, 2152 mSDsCounter, 0 mSdLazyCounter, 6471 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 2306 SdHoareTripleChecker+Invalid, 6480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 6471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:09:56,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 2306 Invalid, 6480 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 6471 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-22 00:09:56,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24594 states. [2022-11-22 00:09:56,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24594 to 20390. [2022-11-22 00:09:56,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20390 states, 20389 states have (on average 4.191279611555251) internal successors, (85456), 20389 states have internal predecessors, (85456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:09:56,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20390 states to 20390 states and 85456 transitions. [2022-11-22 00:09:56,670 INFO L78 Accepts]: Start accepts. Automaton has 20390 states and 85456 transitions. Word has length 63 [2022-11-22 00:09:56,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:09:56,670 INFO L495 AbstractCegarLoop]: Abstraction has 20390 states and 85456 transitions. [2022-11-22 00:09:56,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:09:56,671 INFO L276 IsEmpty]: Start isEmpty. Operand 20390 states and 85456 transitions. [2022-11-22 00:09:56,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:09:56,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:09:56,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:09:56,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-22 00:09:56,712 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:09:56,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:09:56,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1413743573, now seen corresponding path program 21 times [2022-11-22 00:09:56,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:09:56,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233959943] [2022-11-22 00:09:56,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:09:56,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:09:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:09:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:09:57,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:09:57,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233959943] [2022-11-22 00:09:57,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233959943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:09:57,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:09:57,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-22 00:09:57,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532416470] [2022-11-22 00:09:57,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:09:57,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-22 00:09:57,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:09:57,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-22 00:09:57,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-11-22 00:09:57,645 INFO L87 Difference]: Start difference. First operand 20390 states and 85456 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:02,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:02,739 INFO L93 Difference]: Finished difference Result 24277 states and 101545 transitions. [2022-11-22 00:10:02,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-22 00:10:02,740 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:10:02,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:02,815 INFO L225 Difference]: With dead ends: 24277 [2022-11-22 00:10:02,815 INFO L226 Difference]: Without dead ends: 24044 [2022-11-22 00:10:02,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=268, Invalid=2702, Unknown=0, NotChecked=0, Total=2970 [2022-11-22 00:10:02,816 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 1000 mSDsluCounter, 2181 mSDsCounter, 0 mSdLazyCounter, 6851 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 6869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 6851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:10:02,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 2338 Invalid, 6869 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 6851 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-22 00:10:02,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24044 states. [2022-11-22 00:10:03,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24044 to 20398. [2022-11-22 00:10:03,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20398 states, 20397 states have (on average 4.191008481639456) internal successors, (85484), 20397 states have internal predecessors, (85484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:03,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20398 states to 20398 states and 85484 transitions. [2022-11-22 00:10:03,415 INFO L78 Accepts]: Start accepts. Automaton has 20398 states and 85484 transitions. Word has length 63 [2022-11-22 00:10:03,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:03,416 INFO L495 AbstractCegarLoop]: Abstraction has 20398 states and 85484 transitions. [2022-11-22 00:10:03,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:03,416 INFO L276 IsEmpty]: Start isEmpty. Operand 20398 states and 85484 transitions. [2022-11-22 00:10:03,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:10:03,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:03,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:10:03,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-22 00:10:03,460 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:10:03,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:03,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1027445199, now seen corresponding path program 22 times [2022-11-22 00:10:03,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:03,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129494174] [2022-11-22 00:10:03,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:03,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:04,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:04,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:04,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129494174] [2022-11-22 00:10:04,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129494174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:10:04,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:10:04,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-22 00:10:04,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853227293] [2022-11-22 00:10:04,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:10:04,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-22 00:10:04,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:04,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-22 00:10:04,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2022-11-22 00:10:04,752 INFO L87 Difference]: Start difference. First operand 20398 states and 85484 transitions. Second operand has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:10,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:10,872 INFO L93 Difference]: Finished difference Result 26693 states and 109997 transitions. [2022-11-22 00:10:10,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-22 00:10:10,872 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:10:10,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:10,962 INFO L225 Difference]: With dead ends: 26693 [2022-11-22 00:10:10,962 INFO L226 Difference]: Without dead ends: 26472 [2022-11-22 00:10:10,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=276, Invalid=2586, Unknown=0, NotChecked=0, Total=2862 [2022-11-22 00:10:10,963 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 1110 mSDsluCounter, 1913 mSDsCounter, 0 mSdLazyCounter, 6301 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 2041 SdHoareTripleChecker+Invalid, 6317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 6301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:10:10,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1110 Valid, 2041 Invalid, 6317 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 6301 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-22 00:10:11,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26472 states. [2022-11-22 00:10:11,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26472 to 20406. [2022-11-22 00:10:11,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20406 states, 20405 states have (on average 4.1911296250918895) internal successors, (85520), 20405 states have internal predecessors, (85520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:11,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20406 states to 20406 states and 85520 transitions. [2022-11-22 00:10:11,560 INFO L78 Accepts]: Start accepts. Automaton has 20406 states and 85520 transitions. Word has length 63 [2022-11-22 00:10:11,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:11,560 INFO L495 AbstractCegarLoop]: Abstraction has 20406 states and 85520 transitions. [2022-11-22 00:10:11,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:11,561 INFO L276 IsEmpty]: Start isEmpty. Operand 20406 states and 85520 transitions. [2022-11-22 00:10:11,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:10:11,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:11,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:10:11,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-22 00:10:11,607 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:10:11,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:11,607 INFO L85 PathProgramCache]: Analyzing trace with hash 967626291, now seen corresponding path program 23 times [2022-11-22 00:10:11,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:11,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613436728] [2022-11-22 00:10:11,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:11,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:12,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:12,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:12,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613436728] [2022-11-22 00:10:12,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613436728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:10:12,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:10:12,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-22 00:10:12,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974152389] [2022-11-22 00:10:12,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:10:12,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-22 00:10:12,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:12,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-22 00:10:12,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-11-22 00:10:12,586 INFO L87 Difference]: Start difference. First operand 20406 states and 85520 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:18,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:18,040 INFO L93 Difference]: Finished difference Result 24279 states and 101019 transitions. [2022-11-22 00:10:18,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-22 00:10:18,041 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:10:18,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:18,110 INFO L225 Difference]: With dead ends: 24279 [2022-11-22 00:10:18,110 INFO L226 Difference]: Without dead ends: 23958 [2022-11-22 00:10:18,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=288, Invalid=2904, Unknown=0, NotChecked=0, Total=3192 [2022-11-22 00:10:18,111 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 1133 mSDsluCounter, 2218 mSDsCounter, 0 mSdLazyCounter, 7063 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 7085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 7063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:10:18,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1133 Valid, 2379 Invalid, 7085 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 7063 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-22 00:10:18,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23958 states. [2022-11-22 00:10:18,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23958 to 20406. [2022-11-22 00:10:18,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20406 states, 20405 states have (on average 4.19073756432247) internal successors, (85512), 20405 states have internal predecessors, (85512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:18,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20406 states to 20406 states and 85512 transitions. [2022-11-22 00:10:18,700 INFO L78 Accepts]: Start accepts. Automaton has 20406 states and 85512 transitions. Word has length 63 [2022-11-22 00:10:18,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:18,701 INFO L495 AbstractCegarLoop]: Abstraction has 20406 states and 85512 transitions. [2022-11-22 00:10:18,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:18,701 INFO L276 IsEmpty]: Start isEmpty. Operand 20406 states and 85512 transitions. [2022-11-22 00:10:18,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:10:18,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:18,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:10:18,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-22 00:10:18,746 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:10:18,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:18,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1034695319, now seen corresponding path program 24 times [2022-11-22 00:10:18,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:18,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171372864] [2022-11-22 00:10:18,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:18,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:19,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:19,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:19,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171372864] [2022-11-22 00:10:19,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171372864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:10:19,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:10:19,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-22 00:10:19,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297289568] [2022-11-22 00:10:19,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:10:19,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-22 00:10:19,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:19,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-22 00:10:19,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2022-11-22 00:10:19,900 INFO L87 Difference]: Start difference. First operand 20406 states and 85512 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:30,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:30,179 INFO L93 Difference]: Finished difference Result 45243 states and 193496 transitions. [2022-11-22 00:10:30,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-11-22 00:10:30,179 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:10:30,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:30,342 INFO L225 Difference]: With dead ends: 45243 [2022-11-22 00:10:30,342 INFO L226 Difference]: Without dead ends: 45022 [2022-11-22 00:10:30,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4269 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=953, Invalid=11479, Unknown=0, NotChecked=0, Total=12432 [2022-11-22 00:10:30,343 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 1945 mSDsluCounter, 2840 mSDsCounter, 0 mSdLazyCounter, 11157 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1945 SdHoareTripleChecker+Valid, 3026 SdHoareTripleChecker+Invalid, 11276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 11157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:10:30,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1945 Valid, 3026 Invalid, 11276 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [119 Valid, 11157 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-22 00:10:30,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45022 states. [2022-11-22 00:10:31,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45022 to 20574. [2022-11-22 00:10:31,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20574 states, 20573 states have (on average 4.195207310552666) internal successors, (86308), 20573 states have internal predecessors, (86308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:31,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20574 states to 20574 states and 86308 transitions. [2022-11-22 00:10:31,437 INFO L78 Accepts]: Start accepts. Automaton has 20574 states and 86308 transitions. Word has length 63 [2022-11-22 00:10:31,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:31,437 INFO L495 AbstractCegarLoop]: Abstraction has 20574 states and 86308 transitions. [2022-11-22 00:10:31,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:31,437 INFO L276 IsEmpty]: Start isEmpty. Operand 20574 states and 86308 transitions. [2022-11-22 00:10:31,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:10:31,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:31,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:10:31,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-22 00:10:31,482 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:10:31,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:31,482 INFO L85 PathProgramCache]: Analyzing trace with hash -816380277, now seen corresponding path program 25 times [2022-11-22 00:10:31,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:31,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009129] [2022-11-22 00:10:31,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:31,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:32,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:32,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:32,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009129] [2022-11-22 00:10:32,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:10:32,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:10:32,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-22 00:10:32,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098311923] [2022-11-22 00:10:32,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:10:32,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-22 00:10:32,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:32,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-22 00:10:32,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-11-22 00:10:32,153 INFO L87 Difference]: Start difference. First operand 20574 states and 86308 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:37,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:37,512 INFO L93 Difference]: Finished difference Result 24913 states and 103609 transitions. [2022-11-22 00:10:37,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-22 00:10:37,515 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:10:37,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:37,595 INFO L225 Difference]: With dead ends: 24913 [2022-11-22 00:10:37,595 INFO L226 Difference]: Without dead ends: 24688 [2022-11-22 00:10:37,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=291, Invalid=3015, Unknown=0, NotChecked=0, Total=3306 [2022-11-22 00:10:37,596 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 1082 mSDsluCounter, 2206 mSDsCounter, 0 mSdLazyCounter, 6941 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 2365 SdHoareTripleChecker+Invalid, 6961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 6941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:10:37,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 2365 Invalid, 6961 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 6941 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-22 00:10:37,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24688 states. [2022-11-22 00:10:37,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24688 to 20582. [2022-11-22 00:10:38,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20582 states, 20581 states have (on average 4.194548369855692) internal successors, (86328), 20581 states have internal predecessors, (86328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:38,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20582 states to 20582 states and 86328 transitions. [2022-11-22 00:10:38,285 INFO L78 Accepts]: Start accepts. Automaton has 20582 states and 86328 transitions. Word has length 63 [2022-11-22 00:10:38,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:38,286 INFO L495 AbstractCegarLoop]: Abstraction has 20582 states and 86328 transitions. [2022-11-22 00:10:38,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:38,286 INFO L276 IsEmpty]: Start isEmpty. Operand 20582 states and 86328 transitions. [2022-11-22 00:10:38,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:10:38,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:38,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:10:38,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-22 00:10:38,330 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:10:38,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:38,331 INFO L85 PathProgramCache]: Analyzing trace with hash -567312267, now seen corresponding path program 26 times [2022-11-22 00:10:38,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:38,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125521252] [2022-11-22 00:10:38,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:38,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:39,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:39,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125521252] [2022-11-22 00:10:39,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125521252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:10:39,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:10:39,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-22 00:10:39,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060872723] [2022-11-22 00:10:39,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:10:39,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-22 00:10:39,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:39,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-22 00:10:39,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-11-22 00:10:39,095 INFO L87 Difference]: Start difference. First operand 20582 states and 86328 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:44,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:44,101 INFO L93 Difference]: Finished difference Result 24217 states and 101165 transitions. [2022-11-22 00:10:44,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-22 00:10:44,101 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:10:44,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:44,298 INFO L225 Difference]: With dead ends: 24217 [2022-11-22 00:10:44,298 INFO L226 Difference]: Without dead ends: 23948 [2022-11-22 00:10:44,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=275, Invalid=2805, Unknown=0, NotChecked=0, Total=3080 [2022-11-22 00:10:44,299 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 994 mSDsluCounter, 2111 mSDsCounter, 0 mSdLazyCounter, 6686 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 2263 SdHoareTripleChecker+Invalid, 6703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 6686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:10:44,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 2263 Invalid, 6703 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 6686 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-22 00:10:44,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23948 states. [2022-11-22 00:10:44,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23948 to 20550. [2022-11-22 00:10:44,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20550 states, 20549 states have (on average 4.196019271010755) internal successors, (86224), 20549 states have internal predecessors, (86224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:44,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20550 states to 20550 states and 86224 transitions. [2022-11-22 00:10:44,819 INFO L78 Accepts]: Start accepts. Automaton has 20550 states and 86224 transitions. Word has length 63 [2022-11-22 00:10:44,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:44,820 INFO L495 AbstractCegarLoop]: Abstraction has 20550 states and 86224 transitions. [2022-11-22 00:10:44,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:44,820 INFO L276 IsEmpty]: Start isEmpty. Operand 20550 states and 86224 transitions. [2022-11-22 00:10:45,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:10:45,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:45,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:10:45,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-22 00:10:45,104 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:10:45,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:45,105 INFO L85 PathProgramCache]: Analyzing trace with hash 400583365, now seen corresponding path program 27 times [2022-11-22 00:10:45,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:45,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066195753] [2022-11-22 00:10:45,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:45,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:45,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:45,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:45,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066195753] [2022-11-22 00:10:45,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066195753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:10:45,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:10:45,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-22 00:10:45,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244390618] [2022-11-22 00:10:45,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:10:45,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-22 00:10:45,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:45,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-22 00:10:45,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2022-11-22 00:10:45,756 INFO L87 Difference]: Start difference. First operand 20550 states and 86224 transitions. Second operand has 16 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:49,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:49,311 INFO L93 Difference]: Finished difference Result 24267 states and 100799 transitions. [2022-11-22 00:10:49,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-22 00:10:49,311 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:10:49,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:49,383 INFO L225 Difference]: With dead ends: 24267 [2022-11-22 00:10:49,383 INFO L226 Difference]: Without dead ends: 23886 [2022-11-22 00:10:49,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=139, Invalid=1267, Unknown=0, NotChecked=0, Total=1406 [2022-11-22 00:10:49,383 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 713 mSDsluCounter, 1535 mSDsCounter, 0 mSdLazyCounter, 4952 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 4954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:10:49,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 1662 Invalid, 4954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4952 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-22 00:10:49,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23886 states. [2022-11-22 00:10:49,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23886 to 20598. [2022-11-22 00:10:49,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20598 states, 20597 states have (on average 4.194785648395397) internal successors, (86400), 20597 states have internal predecessors, (86400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:49,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20598 states to 20598 states and 86400 transitions. [2022-11-22 00:10:49,976 INFO L78 Accepts]: Start accepts. Automaton has 20598 states and 86400 transitions. Word has length 63 [2022-11-22 00:10:49,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:49,976 INFO L495 AbstractCegarLoop]: Abstraction has 20598 states and 86400 transitions. [2022-11-22 00:10:49,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:49,976 INFO L276 IsEmpty]: Start isEmpty. Operand 20598 states and 86400 transitions. [2022-11-22 00:10:50,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:10:50,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:50,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:10:50,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-22 00:10:50,020 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:10:50,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:50,020 INFO L85 PathProgramCache]: Analyzing trace with hash 973995981, now seen corresponding path program 28 times [2022-11-22 00:10:50,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:50,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340633347] [2022-11-22 00:10:50,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:50,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:50,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:50,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:50,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340633347] [2022-11-22 00:10:50,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340633347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:10:50,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:10:50,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 00:10:50,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480632127] [2022-11-22 00:10:50,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:10:50,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 00:10:50,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:50,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 00:10:50,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2022-11-22 00:10:50,967 INFO L87 Difference]: Start difference. First operand 20598 states and 86400 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:54,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:54,884 INFO L93 Difference]: Finished difference Result 24405 states and 101097 transitions. [2022-11-22 00:10:54,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-22 00:10:54,885 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:10:54,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:54,961 INFO L225 Difference]: With dead ends: 24405 [2022-11-22 00:10:54,961 INFO L226 Difference]: Without dead ends: 24124 [2022-11-22 00:10:54,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=162, Invalid=1560, Unknown=0, NotChecked=0, Total=1722 [2022-11-22 00:10:54,962 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 838 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 5427 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 5433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 5427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:10:54,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 1802 Invalid, 5433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 5427 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-22 00:10:55,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24124 states. [2022-11-22 00:10:55,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24124 to 20598. [2022-11-22 00:10:55,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20598 states, 20597 states have (on average 4.194785648395397) internal successors, (86400), 20597 states have internal predecessors, (86400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:55,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20598 states to 20598 states and 86400 transitions. [2022-11-22 00:10:55,672 INFO L78 Accepts]: Start accepts. Automaton has 20598 states and 86400 transitions. Word has length 63 [2022-11-22 00:10:55,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:55,672 INFO L495 AbstractCegarLoop]: Abstraction has 20598 states and 86400 transitions. [2022-11-22 00:10:55,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:55,672 INFO L276 IsEmpty]: Start isEmpty. Operand 20598 states and 86400 transitions. [2022-11-22 00:10:55,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:10:55,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:55,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:10:55,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-22 00:10:55,715 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:10:55,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:55,716 INFO L85 PathProgramCache]: Analyzing trace with hash 406400203, now seen corresponding path program 29 times [2022-11-22 00:10:55,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:55,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348119395] [2022-11-22 00:10:55,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:55,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:57,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:10:57,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:57,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348119395] [2022-11-22 00:10:57,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348119395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:10:57,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:10:57,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-22 00:10:57,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265914644] [2022-11-22 00:10:57,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:10:57,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-22 00:10:57,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:57,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-22 00:10:57,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2022-11-22 00:10:57,119 INFO L87 Difference]: Start difference. First operand 20598 states and 86400 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:11:03,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:11:03,217 INFO L93 Difference]: Finished difference Result 29205 states and 122527 transitions. [2022-11-22 00:11:03,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-22 00:11:03,218 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:11:03,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:11:03,309 INFO L225 Difference]: With dead ends: 29205 [2022-11-22 00:11:03,309 INFO L226 Difference]: Without dead ends: 28948 [2022-11-22 00:11:03,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=262, Invalid=2600, Unknown=0, NotChecked=0, Total=2862 [2022-11-22 00:11:03,310 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 1048 mSDsluCounter, 2562 mSDsCounter, 0 mSdLazyCounter, 8063 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 2710 SdHoareTripleChecker+Invalid, 8085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 8063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:11:03,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 2710 Invalid, 8085 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 8063 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-22 00:11:03,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28948 states. [2022-11-22 00:11:03,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28948 to 20634. [2022-11-22 00:11:03,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20634 states, 20633 states have (on average 4.19386419812921) internal successors, (86532), 20633 states have internal predecessors, (86532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:11:03,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20634 states to 20634 states and 86532 transitions. [2022-11-22 00:11:03,954 INFO L78 Accepts]: Start accepts. Automaton has 20634 states and 86532 transitions. Word has length 63 [2022-11-22 00:11:03,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:11:03,955 INFO L495 AbstractCegarLoop]: Abstraction has 20634 states and 86532 transitions. [2022-11-22 00:11:03,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:11:03,955 INFO L276 IsEmpty]: Start isEmpty. Operand 20634 states and 86532 transitions. [2022-11-22 00:11:03,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:11:03,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:11:03,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:11:03,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-22 00:11:03,997 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:11:03,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:11:03,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1762879245, now seen corresponding path program 30 times [2022-11-22 00:11:03,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:11:03,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088941983] [2022-11-22 00:11:03,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:11:03,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:11:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:11:04,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:11:04,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:11:04,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088941983] [2022-11-22 00:11:04,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088941983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:11:04,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:11:04,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 00:11:04,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100690460] [2022-11-22 00:11:04,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:11:04,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 00:11:04,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:11:04,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 00:11:04,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2022-11-22 00:11:04,976 INFO L87 Difference]: Start difference. First operand 20634 states and 86532 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:11:08,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:11:08,596 INFO L93 Difference]: Finished difference Result 24377 states and 100980 transitions. [2022-11-22 00:11:08,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-22 00:11:08,597 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:11:08,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:11:08,672 INFO L225 Difference]: With dead ends: 24377 [2022-11-22 00:11:08,672 INFO L226 Difference]: Without dead ends: 24124 [2022-11-22 00:11:08,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=129, Invalid=1203, Unknown=0, NotChecked=0, Total=1332 [2022-11-22 00:11:08,674 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 698 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 5053 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 5055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:11:08,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 1741 Invalid, 5055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5053 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-22 00:11:08,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24124 states. [2022-11-22 00:11:09,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24124 to 20654. [2022-11-22 00:11:09,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20654 states, 20653 states have (on average 4.192708081150438) internal successors, (86592), 20653 states have internal predecessors, (86592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:11:09,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20654 states to 20654 states and 86592 transitions. [2022-11-22 00:11:09,358 INFO L78 Accepts]: Start accepts. Automaton has 20654 states and 86592 transitions. Word has length 63 [2022-11-22 00:11:09,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:11:09,358 INFO L495 AbstractCegarLoop]: Abstraction has 20654 states and 86592 transitions. [2022-11-22 00:11:09,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:11:09,359 INFO L276 IsEmpty]: Start isEmpty. Operand 20654 states and 86592 transitions. [2022-11-22 00:11:09,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:11:09,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:11:09,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:11:09,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-22 00:11:09,402 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:11:09,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:11:09,402 INFO L85 PathProgramCache]: Analyzing trace with hash -726763121, now seen corresponding path program 31 times [2022-11-22 00:11:09,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:11:09,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24379431] [2022-11-22 00:11:09,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:11:09,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:11:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:11:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:11:10,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:11:10,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24379431] [2022-11-22 00:11:10,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24379431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:11:10,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:11:10,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 00:11:10,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785057428] [2022-11-22 00:11:10,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:11:10,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 00:11:10,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:11:10,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 00:11:10,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2022-11-22 00:11:10,066 INFO L87 Difference]: Start difference. First operand 20654 states and 86592 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:11:14,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:11:14,121 INFO L93 Difference]: Finished difference Result 24595 states and 101559 transitions. [2022-11-22 00:11:14,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-22 00:11:14,122 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:11:14,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:11:14,194 INFO L225 Difference]: With dead ends: 24595 [2022-11-22 00:11:14,194 INFO L226 Difference]: Without dead ends: 24314 [2022-11-22 00:11:14,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=161, Invalid=1561, Unknown=0, NotChecked=0, Total=1722 [2022-11-22 00:11:14,195 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 847 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 5631 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 5637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 5631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:11:14,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 1862 Invalid, 5637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 5631 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-22 00:11:14,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24314 states. [2022-11-22 00:11:14,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24314 to 20682. [2022-11-22 00:11:14,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20682 states, 20681 states have (on average 4.192640587979304) internal successors, (86708), 20681 states have internal predecessors, (86708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:11:15,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20682 states to 20682 states and 86708 transitions. [2022-11-22 00:11:15,024 INFO L78 Accepts]: Start accepts. Automaton has 20682 states and 86708 transitions. Word has length 63 [2022-11-22 00:11:15,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:11:15,024 INFO L495 AbstractCegarLoop]: Abstraction has 20682 states and 86708 transitions. [2022-11-22 00:11:15,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:11:15,024 INFO L276 IsEmpty]: Start isEmpty. Operand 20682 states and 86708 transitions. [2022-11-22 00:11:15,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:11:15,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:11:15,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:11:15,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-22 00:11:15,065 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:11:15,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:11:15,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1294358899, now seen corresponding path program 32 times [2022-11-22 00:11:15,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:11:15,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738770765] [2022-11-22 00:11:15,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:11:15,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:11:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:11:16,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:11:16,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:11:16,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738770765] [2022-11-22 00:11:16,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738770765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:11:16,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:11:16,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-22 00:11:16,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722421341] [2022-11-22 00:11:16,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:11:16,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-22 00:11:16,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:11:16,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-22 00:11:16,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2022-11-22 00:11:16,273 INFO L87 Difference]: Start difference. First operand 20682 states and 86708 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:11:24,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:11:24,859 INFO L93 Difference]: Finished difference Result 38813 states and 158746 transitions. [2022-11-22 00:11:24,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-22 00:11:24,860 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:11:24,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:11:24,985 INFO L225 Difference]: With dead ends: 38813 [2022-11-22 00:11:24,985 INFO L226 Difference]: Without dead ends: 37494 [2022-11-22 00:11:24,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1525 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=476, Invalid=5074, Unknown=0, NotChecked=0, Total=5550 [2022-11-22 00:11:24,986 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 1661 mSDsluCounter, 3572 mSDsCounter, 0 mSdLazyCounter, 11547 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1661 SdHoareTripleChecker+Valid, 3815 SdHoareTripleChecker+Invalid, 11595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 11547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:11:24,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1661 Valid, 3815 Invalid, 11595 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 11547 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-22 00:11:25,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37494 states. [2022-11-22 00:11:25,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37494 to 20826. [2022-11-22 00:11:25,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20826 states, 20825 states have (on average 4.188235294117647) internal successors, (87220), 20825 states have internal predecessors, (87220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:11:25,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20826 states to 20826 states and 87220 transitions. [2022-11-22 00:11:25,791 INFO L78 Accepts]: Start accepts. Automaton has 20826 states and 87220 transitions. Word has length 63 [2022-11-22 00:11:25,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:11:25,791 INFO L495 AbstractCegarLoop]: Abstraction has 20826 states and 87220 transitions. [2022-11-22 00:11:25,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:11:25,791 INFO L276 IsEmpty]: Start isEmpty. Operand 20826 states and 87220 transitions. [2022-11-22 00:11:25,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:11:25,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:11:25,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:11:25,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-22 00:11:25,832 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:11:25,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:11:25,833 INFO L85 PathProgramCache]: Analyzing trace with hash 2109732279, now seen corresponding path program 33 times [2022-11-22 00:11:25,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:11:25,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889031723] [2022-11-22 00:11:25,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:11:25,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:11:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:11:26,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:11:26,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:11:26,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889031723] [2022-11-22 00:11:26,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889031723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:11:26,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:11:26,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-22 00:11:26,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209654964] [2022-11-22 00:11:26,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:11:26,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-22 00:11:26,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:11:26,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-22 00:11:26,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2022-11-22 00:11:26,706 INFO L87 Difference]: Start difference. First operand 20826 states and 87220 transitions. Second operand has 16 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:11:31,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:11:31,314 INFO L93 Difference]: Finished difference Result 26591 states and 110369 transitions. [2022-11-22 00:11:31,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-22 00:11:31,315 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 00:11:31,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:11:31,393 INFO L225 Difference]: With dead ends: 26591 [2022-11-22 00:11:31,394 INFO L226 Difference]: Without dead ends: 26210 [2022-11-22 00:11:31,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=210, Invalid=2046, Unknown=0, NotChecked=0, Total=2256 [2022-11-22 00:11:31,395 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 841 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 6159 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1961 SdHoareTripleChecker+Invalid, 6165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 6159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:11:31,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1961 Invalid, 6165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 6159 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-22 00:11:31,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26210 states. [2022-11-22 00:11:31,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26210 to 20882. [2022-11-22 00:11:31,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20882 states, 20881 states have (on average 4.1862937598774) internal successors, (87414), 20881 states have internal predecessors, (87414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:11:32,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20882 states to 20882 states and 87414 transitions. [2022-11-22 00:11:32,029 INFO L78 Accepts]: Start accepts. Automaton has 20882 states and 87414 transitions. Word has length 63 [2022-11-22 00:11:32,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:11:32,029 INFO L495 AbstractCegarLoop]: Abstraction has 20882 states and 87414 transitions. [2022-11-22 00:11:32,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:11:32,029 INFO L276 IsEmpty]: Start isEmpty. Operand 20882 states and 87414 transitions. [2022-11-22 00:11:32,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 00:11:32,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:11:32,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:11:32,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-22 00:11:32,074 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-22 00:11:32,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:11:32,080 INFO L85 PathProgramCache]: Analyzing trace with hash -909318537, now seen corresponding path program 34 times [2022-11-22 00:11:32,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:11:32,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035541582] [2022-11-22 00:11:32,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:11:32,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:11:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:11:32,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:11:32,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:11:32,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035541582] [2022-11-22 00:11:32,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035541582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:11:32,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:11:32,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 00:11:32,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298183048] [2022-11-22 00:11:32,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:11:32,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 00:11:32,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:11:32,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 00:11:32,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2022-11-22 00:11:32,749 INFO L87 Difference]: Start difference. First operand 20882 states and 87414 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)