./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7924b8a-2793-4a1c-b954-f1146259b8ab/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7924b8a-2793-4a1c-b954-f1146259b8ab/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7924b8a-2793-4a1c-b954-f1146259b8ab/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7924b8a-2793-4a1c-b954-f1146259b8ab/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7924b8a-2793-4a1c-b954-f1146259b8ab/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7924b8a-2793-4a1c-b954-f1146259b8ab/bin/utaipan-Xvt2sAort0 --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 9565dcbef2b519c6326563c41ab6633c2e0b59b7d9ee2c8626de0cd3767b77b1 --- 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-e04fb08 [2022-11-16 19:26:27,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:26:27,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:26:27,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:26:27,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:26:27,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:26:27,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:26:27,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:26:27,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:26:27,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:26:27,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:26:27,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:26:27,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:26:27,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:26:27,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:26:27,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:26:27,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:26:27,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:26:27,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:26:27,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:26:27,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:26:27,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:26:27,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:26:27,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:26:27,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:26:27,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:26:27,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:26:27,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:26:27,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:26:27,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:26:27,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:26:27,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:26:27,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:26:27,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:26:27,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:26:27,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:26:27,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:26:27,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:26:27,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:26:27,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:26:27,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:26:27,476 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7924b8a-2793-4a1c-b954-f1146259b8ab/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 19:26:27,518 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:26:27,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:26:27,519 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:26:27,519 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:26:27,520 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:26:27,520 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:26:27,520 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:26:27,520 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:26:27,521 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:26:27,521 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 19:26:27,522 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:26:27,522 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:26:27,522 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 19:26:27,523 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 19:26:27,523 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:26:27,523 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 19:26:27,523 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 19:26:27,524 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 19:26:27,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:26:27,524 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 19:26:27,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:26:27,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 19:26:27,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:26:27,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 19:26:27,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:26:27,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 19:26:27,526 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 19:26:27,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 19:26:27,528 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:26:27,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 19:26:27,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:26:27,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:26:27,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:26:27,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:26:27,530 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 19:26:27,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:26:27,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 19:26:27,530 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 19:26:27,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 19:26:27,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 19:26:27,531 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:26:27,531 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_d7924b8a-2793-4a1c-b954-f1146259b8ab/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7924b8a-2793-4a1c-b954-f1146259b8ab/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9565dcbef2b519c6326563c41ab6633c2e0b59b7d9ee2c8626de0cd3767b77b1 [2022-11-16 19:26:27,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:26:27,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:26:27,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:26:27,893 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:26:27,893 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:26:27,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7924b8a-2793-4a1c-b954-f1146259b8ab/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i [2022-11-16 19:26:27,987 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7924b8a-2793-4a1c-b954-f1146259b8ab/bin/utaipan-Xvt2sAort0/data/82f6170d1/f5bbb7f407ff472fb5a3724eb5eb2fa9/FLAGef263fe39 [2022-11-16 19:26:28,522 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:26:28,523 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7924b8a-2793-4a1c-b954-f1146259b8ab/sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i [2022-11-16 19:26:28,556 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7924b8a-2793-4a1c-b954-f1146259b8ab/bin/utaipan-Xvt2sAort0/data/82f6170d1/f5bbb7f407ff472fb5a3724eb5eb2fa9/FLAGef263fe39 [2022-11-16 19:26:28,823 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7924b8a-2793-4a1c-b954-f1146259b8ab/bin/utaipan-Xvt2sAort0/data/82f6170d1/f5bbb7f407ff472fb5a3724eb5eb2fa9 [2022-11-16 19:26:28,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:26:28,832 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:26:28,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:26:28,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:26:28,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:26:28,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:26:28" (1/1) ... [2022-11-16 19:26:28,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73ee64c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:28, skipping insertion in model container [2022-11-16 19:26:28,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:26:28" (1/1) ... [2022-11-16 19:26:28,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:26:28,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:26:29,150 WARN L229 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_d7924b8a-2793-4a1c-b954-f1146259b8ab/sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i[966,979] [2022-11-16 19:26:29,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:26:29,446 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:26:29,466 WARN L229 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_d7924b8a-2793-4a1c-b954-f1146259b8ab/sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i[966,979] [2022-11-16 19:26:29,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:26:29,571 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:26:29,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:29 WrapperNode [2022-11-16 19:26:29,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:26:29,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:26:29,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:26:29,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:26:29,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:29" (1/1) ... [2022-11-16 19:26:29,612 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:29" (1/1) ... [2022-11-16 19:26:29,662 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 158 [2022-11-16 19:26:29,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:26:29,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:26:29,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:26:29,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:26:29,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:29" (1/1) ... [2022-11-16 19:26:29,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:29" (1/1) ... [2022-11-16 19:26:29,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:29" (1/1) ... [2022-11-16 19:26:29,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:29" (1/1) ... [2022-11-16 19:26:29,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:29" (1/1) ... [2022-11-16 19:26:29,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:29" (1/1) ... [2022-11-16 19:26:29,715 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:29" (1/1) ... [2022-11-16 19:26:29,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:29" (1/1) ... [2022-11-16 19:26:29,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:26:29,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:26:29,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:26:29,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:26:29,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:29" (1/1) ... [2022-11-16 19:26:29,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:26:29,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7924b8a-2793-4a1c-b954-f1146259b8ab/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:26:29,768 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7924b8a-2793-4a1c-b954-f1146259b8ab/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:26:29,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7924b8a-2793-4a1c-b954-f1146259b8ab/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:26:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 19:26:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 19:26:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:26:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 19:26:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 19:26:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-16 19:26:29,813 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-16 19:26:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-16 19:26:29,813 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-16 19:26:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-16 19:26:29,814 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-16 19:26:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-16 19:26:29,814 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-16 19:26:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 19:26:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 19:26:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:26:29,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:26:29,816 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 19:26:30,024 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:26:30,026 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:26:30,487 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:26:30,708 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:26:30,708 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 19:26:30,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:26:30 BoogieIcfgContainer [2022-11-16 19:26:30,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:26:30,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:26:30,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:26:30,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:26:30,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:26:28" (1/3) ... [2022-11-16 19:26:30,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ebeb36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:26:30, skipping insertion in model container [2022-11-16 19:26:30,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:29" (2/3) ... [2022-11-16 19:26:30,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ebeb36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:26:30, skipping insertion in model container [2022-11-16 19:26:30,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:26:30" (3/3) ... [2022-11-16 19:26:30,722 INFO L112 eAbstractionObserver]: Analyzing ICFG mix030_power.opt_pso.opt_rmo.opt.i [2022-11-16 19:26:30,731 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 19:26:30,741 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:26:30,741 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 19:26:30,741 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 19:26:30,820 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 19:26:30,853 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 19:26:30,867 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 135 transitions, 290 flow [2022-11-16 19:26:30,872 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 135 transitions, 290 flow [2022-11-16 19:26:30,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 135 transitions, 290 flow [2022-11-16 19:26:30,963 INFO L130 PetriNetUnfolder]: 2/131 cut-off events. [2022-11-16 19:26:30,963 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 19:26:30,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 131 events. 2/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 69 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-11-16 19:26:30,995 INFO L119 LiptonReduction]: Number of co-enabled transitions 3218 [2022-11-16 19:26:36,462 INFO L134 LiptonReduction]: Checked pairs total: 8828 [2022-11-16 19:26:36,462 INFO L136 LiptonReduction]: Total number of compositions: 112 [2022-11-16 19:26:36,476 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 35 transitions, 90 flow [2022-11-16 19:26:36,713 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4130 states, 4127 states have (on average 4.1293918100315) internal successors, (17042), 4129 states have internal predecessors, (17042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:36,731 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:26:36,737 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;@69f02663, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:26:36,738 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-16 19:26:36,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 4130 states, 4127 states have (on average 4.1293918100315) internal successors, (17042), 4129 states have internal predecessors, (17042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:36,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 19:26:36,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:26:36,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:26:36,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 19:26:36,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:26:36,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1700061844, now seen corresponding path program 1 times [2022-11-16 19:26:36,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:26:36,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227555799] [2022-11-16 19:26:36,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:36,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:26:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:26:37,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:26:37,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:26:37,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227555799] [2022-11-16 19:26:37,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227555799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:26:37,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:26:37,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 19:26:37,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551844720] [2022-11-16 19:26:37,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:26:37,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:26:37,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:26:37,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:26:37,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:26:37,334 INFO L87 Difference]: Start difference. First operand has 4130 states, 4127 states have (on average 4.1293918100315) internal successors, (17042), 4129 states have internal predecessors, (17042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:37,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:26:37,522 INFO L93 Difference]: Finished difference Result 3370 states and 13144 transitions. [2022-11-16 19:26:37,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:26:37,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-16 19:26:37,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:26:37,579 INFO L225 Difference]: With dead ends: 3370 [2022-11-16 19:26:37,579 INFO L226 Difference]: Without dead ends: 3250 [2022-11-16 19:26:37,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:26:37,585 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 15 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:26:37,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 10 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:26:37,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2022-11-16 19:26:37,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 3250. [2022-11-16 19:26:37,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3250 states, 3249 states have (on average 3.920590951061865) internal successors, (12738), 3249 states have internal predecessors, (12738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:37,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3250 states to 3250 states and 12738 transitions. [2022-11-16 19:26:37,874 INFO L78 Accepts]: Start accepts. Automaton has 3250 states and 12738 transitions. Word has length 7 [2022-11-16 19:26:37,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:26:37,876 INFO L495 AbstractCegarLoop]: Abstraction has 3250 states and 12738 transitions. [2022-11-16 19:26:37,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:37,881 INFO L276 IsEmpty]: Start isEmpty. Operand 3250 states and 12738 transitions. [2022-11-16 19:26:37,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 19:26:37,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:26:37,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:26:37,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 19:26:37,892 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 19:26:37,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:26:37,893 INFO L85 PathProgramCache]: Analyzing trace with hash -512351123, now seen corresponding path program 1 times [2022-11-16 19:26:37,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:26:37,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779716441] [2022-11-16 19:26:37,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:37,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:26:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:26:38,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:26:38,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:26:38,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779716441] [2022-11-16 19:26:38,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779716441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:26:38,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:26:38,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:26:38,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838664792] [2022-11-16 19:26:38,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:26:38,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:26:38,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:26:38,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:26:38,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:26:38,827 INFO L87 Difference]: Start difference. First operand 3250 states and 12738 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:39,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:26:39,428 INFO L93 Difference]: Finished difference Result 5850 states and 21961 transitions. [2022-11-16 19:26:39,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 19:26:39,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-16 19:26:39,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:26:39,472 INFO L225 Difference]: With dead ends: 5850 [2022-11-16 19:26:39,472 INFO L226 Difference]: Without dead ends: 4898 [2022-11-16 19:26:39,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:26:39,475 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 56 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:26:39,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 29 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 19:26:39,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4898 states. [2022-11-16 19:26:39,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4898 to 3494. [2022-11-16 19:26:39,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3494 states, 3493 states have (on average 3.8265101631835097) internal successors, (13366), 3493 states have internal predecessors, (13366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:39,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3494 states to 3494 states and 13366 transitions. [2022-11-16 19:26:39,669 INFO L78 Accepts]: Start accepts. Automaton has 3494 states and 13366 transitions. Word has length 12 [2022-11-16 19:26:39,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:26:39,669 INFO L495 AbstractCegarLoop]: Abstraction has 3494 states and 13366 transitions. [2022-11-16 19:26:39,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:39,670 INFO L276 IsEmpty]: Start isEmpty. Operand 3494 states and 13366 transitions. [2022-11-16 19:26:39,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 19:26:39,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:26:39,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:26:39,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 19:26:39,673 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 19:26:39,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:26:39,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1241243544, now seen corresponding path program 1 times [2022-11-16 19:26:39,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:26:39,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635183663] [2022-11-16 19:26:39,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:39,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:26:39,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:26:40,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:26:40,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:26:40,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635183663] [2022-11-16 19:26:40,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635183663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:26:40,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:26:40,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:26:40,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005605492] [2022-11-16 19:26:40,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:26:40,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:26:40,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:26:40,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:26:40,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:26:40,317 INFO L87 Difference]: Start difference. First operand 3494 states and 13366 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:40,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:26:40,830 INFO L93 Difference]: Finished difference Result 5638 states and 20728 transitions. [2022-11-16 19:26:40,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 19:26:40,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 19:26:40,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:26:40,864 INFO L225 Difference]: With dead ends: 5638 [2022-11-16 19:26:40,864 INFO L226 Difference]: Without dead ends: 4762 [2022-11-16 19:26:40,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:26:40,865 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 63 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:26:40,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 32 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 19:26:40,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4762 states. [2022-11-16 19:26:40,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4762 to 3370. [2022-11-16 19:26:40,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3370 states, 3369 states have (on average 3.80053428317008) internal successors, (12804), 3369 states have internal predecessors, (12804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:41,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3370 states to 3370 states and 12804 transitions. [2022-11-16 19:26:41,059 INFO L78 Accepts]: Start accepts. Automaton has 3370 states and 12804 transitions. Word has length 13 [2022-11-16 19:26:41,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:26:41,059 INFO L495 AbstractCegarLoop]: Abstraction has 3370 states and 12804 transitions. [2022-11-16 19:26:41,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:41,064 INFO L276 IsEmpty]: Start isEmpty. Operand 3370 states and 12804 transitions. [2022-11-16 19:26:41,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 19:26:41,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:26:41,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:26:41,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 19:26:41,068 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 19:26:41,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:26:41,069 INFO L85 PathProgramCache]: Analyzing trace with hash -176168237, now seen corresponding path program 1 times [2022-11-16 19:26:41,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:26:41,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681195935] [2022-11-16 19:26:41,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:41,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:26:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:26:41,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:26:41,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:26:41,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681195935] [2022-11-16 19:26:41,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681195935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:26:41,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:26:41,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:26:41,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734865346] [2022-11-16 19:26:41,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:26:41,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:26:41,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:26:41,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:26:41,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:26:41,752 INFO L87 Difference]: Start difference. First operand 3370 states and 12804 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:42,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:26:42,196 INFO L93 Difference]: Finished difference Result 4674 states and 17182 transitions. [2022-11-16 19:26:42,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 19:26:42,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 19:26:42,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:26:42,218 INFO L225 Difference]: With dead ends: 4674 [2022-11-16 19:26:42,218 INFO L226 Difference]: Without dead ends: 3970 [2022-11-16 19:26:42,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:26:42,220 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 56 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:26:42,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 34 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 19:26:42,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3970 states. [2022-11-16 19:26:42,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3970 to 2986. [2022-11-16 19:26:42,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2986 states, 2985 states have (on average 3.7775544388609714) internal successors, (11276), 2985 states have internal predecessors, (11276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:42,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2986 states to 2986 states and 11276 transitions. [2022-11-16 19:26:42,370 INFO L78 Accepts]: Start accepts. Automaton has 2986 states and 11276 transitions. Word has length 14 [2022-11-16 19:26:42,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:26:42,370 INFO L495 AbstractCegarLoop]: Abstraction has 2986 states and 11276 transitions. [2022-11-16 19:26:42,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:42,371 INFO L276 IsEmpty]: Start isEmpty. Operand 2986 states and 11276 transitions. [2022-11-16 19:26:42,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 19:26:42,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:26:42,374 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:26:42,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 19:26:42,375 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 19:26:42,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:26:42,375 INFO L85 PathProgramCache]: Analyzing trace with hash 542252188, now seen corresponding path program 1 times [2022-11-16 19:26:42,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:26:42,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919121388] [2022-11-16 19:26:42,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:42,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:26:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:26:42,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:26:42,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:26:42,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919121388] [2022-11-16 19:26:42,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919121388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:26:42,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:26:42,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:26:42,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451971648] [2022-11-16 19:26:42,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:26:42,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:26:42,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:26:42,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:26:42,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:26:42,904 INFO L87 Difference]: Start difference. First operand 2986 states and 11276 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:43,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:26:43,054 INFO L93 Difference]: Finished difference Result 3322 states and 12274 transitions. [2022-11-16 19:26:43,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 19:26:43,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-16 19:26:43,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:26:43,069 INFO L225 Difference]: With dead ends: 3322 [2022-11-16 19:26:43,069 INFO L226 Difference]: Without dead ends: 2962 [2022-11-16 19:26:43,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:26:43,070 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 41 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:26:43,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 21 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:26:43,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2022-11-16 19:26:43,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 2958. [2022-11-16 19:26:43,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2958 states, 2957 states have (on average 3.770713561041596) internal successors, (11150), 2957 states have internal predecessors, (11150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:43,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2958 states to 2958 states and 11150 transitions. [2022-11-16 19:26:43,214 INFO L78 Accepts]: Start accepts. Automaton has 2958 states and 11150 transitions. Word has length 15 [2022-11-16 19:26:43,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:26:43,214 INFO L495 AbstractCegarLoop]: Abstraction has 2958 states and 11150 transitions. [2022-11-16 19:26:43,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:43,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2958 states and 11150 transitions. [2022-11-16 19:26:43,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 19:26:43,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:26:43,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:26:43,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 19:26:43,221 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 19:26:43,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:26:43,221 INFO L85 PathProgramCache]: Analyzing trace with hash -370093584, now seen corresponding path program 1 times [2022-11-16 19:26:43,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:26:43,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239429342] [2022-11-16 19:26:43,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:43,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:26:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:26:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:26:45,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:26:45,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239429342] [2022-11-16 19:26:45,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239429342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:26:45,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:26:45,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:26:45,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227658524] [2022-11-16 19:26:45,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:26:45,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 19:26:45,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:26:45,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 19:26:45,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:26:45,049 INFO L87 Difference]: Start difference. First operand 2958 states and 11150 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:45,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:26:45,664 INFO L93 Difference]: Finished difference Result 4890 states and 17946 transitions. [2022-11-16 19:26:45,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 19:26:45,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 19:26:45,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:26:45,687 INFO L225 Difference]: With dead ends: 4890 [2022-11-16 19:26:45,687 INFO L226 Difference]: Without dead ends: 4366 [2022-11-16 19:26:45,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-16 19:26:45,688 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 73 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:26:45,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 39 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 19:26:45,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4366 states. [2022-11-16 19:26:45,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4366 to 3042. [2022-11-16 19:26:45,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3042 states, 3041 states have (on average 3.771127918447879) internal successors, (11468), 3041 states have internal predecessors, (11468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:45,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3042 states to 3042 states and 11468 transitions. [2022-11-16 19:26:45,808 INFO L78 Accepts]: Start accepts. Automaton has 3042 states and 11468 transitions. Word has length 16 [2022-11-16 19:26:45,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:26:45,808 INFO L495 AbstractCegarLoop]: Abstraction has 3042 states and 11468 transitions. [2022-11-16 19:26:45,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:45,809 INFO L276 IsEmpty]: Start isEmpty. Operand 3042 states and 11468 transitions. [2022-11-16 19:26:45,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 19:26:45,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:26:45,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:26:45,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 19:26:45,814 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 19:26:45,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:26:45,814 INFO L85 PathProgramCache]: Analyzing trace with hash -408523974, now seen corresponding path program 2 times [2022-11-16 19:26:45,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:26:45,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730342510] [2022-11-16 19:26:45,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:45,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:26:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:26:46,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:26:46,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:26:46,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730342510] [2022-11-16 19:26:46,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730342510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:26:46,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:26:46,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:26:46,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925897903] [2022-11-16 19:26:46,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:26:46,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 19:26:46,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:26:46,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 19:26:46,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:26:46,624 INFO L87 Difference]: Start difference. First operand 3042 states and 11468 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:47,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:26:47,016 INFO L93 Difference]: Finished difference Result 3694 states and 13742 transitions. [2022-11-16 19:26:47,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 19:26:47,017 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 19:26:47,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:26:47,037 INFO L225 Difference]: With dead ends: 3694 [2022-11-16 19:26:47,037 INFO L226 Difference]: Without dead ends: 3282 [2022-11-16 19:26:47,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-16 19:26:47,039 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 81 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:26:47,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 47 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 19:26:47,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3282 states. [2022-11-16 19:26:47,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3282 to 3080. [2022-11-16 19:26:47,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3080 states, 3079 states have (on average 3.786294251380318) internal successors, (11658), 3079 states have internal predecessors, (11658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:47,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3080 states to 3080 states and 11658 transitions. [2022-11-16 19:26:47,176 INFO L78 Accepts]: Start accepts. Automaton has 3080 states and 11658 transitions. Word has length 16 [2022-11-16 19:26:47,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:26:47,176 INFO L495 AbstractCegarLoop]: Abstraction has 3080 states and 11658 transitions. [2022-11-16 19:26:47,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:47,177 INFO L276 IsEmpty]: Start isEmpty. Operand 3080 states and 11658 transitions. [2022-11-16 19:26:47,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 19:26:47,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:26:47,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:26:47,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 19:26:47,184 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 19:26:47,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:26:47,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1410606429, now seen corresponding path program 1 times [2022-11-16 19:26:47,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:26:47,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355797288] [2022-11-16 19:26:47,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:47,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:26:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:26:48,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:26:48,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:26:48,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355797288] [2022-11-16 19:26:48,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355797288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:26:48,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:26:48,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:26:48,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944639279] [2022-11-16 19:26:48,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:26:48,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 19:26:48,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:26:48,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 19:26:48,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:26:48,030 INFO L87 Difference]: Start difference. First operand 3080 states and 11658 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:48,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:26:48,429 INFO L93 Difference]: Finished difference Result 3284 states and 12242 transitions. [2022-11-16 19:26:48,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 19:26:48,430 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 19:26:48,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:26:48,444 INFO L225 Difference]: With dead ends: 3284 [2022-11-16 19:26:48,445 INFO L226 Difference]: Without dead ends: 3108 [2022-11-16 19:26:48,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-16 19:26:48,446 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 53 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:26:48,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 51 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 19:26:48,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2022-11-16 19:26:48,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 3084. [2022-11-16 19:26:48,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3084 states, 3083 states have (on average 3.780084333441453) internal successors, (11654), 3083 states have internal predecessors, (11654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:48,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3084 states to 3084 states and 11654 transitions. [2022-11-16 19:26:48,546 INFO L78 Accepts]: Start accepts. Automaton has 3084 states and 11654 transitions. Word has length 17 [2022-11-16 19:26:48,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:26:48,547 INFO L495 AbstractCegarLoop]: Abstraction has 3084 states and 11654 transitions. [2022-11-16 19:26:48,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:48,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3084 states and 11654 transitions. [2022-11-16 19:26:48,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 19:26:48,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:26:48,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:26:48,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 19:26:48,553 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 19:26:48,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:26:48,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1410676582, now seen corresponding path program 1 times [2022-11-16 19:26:48,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:26:48,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432658975] [2022-11-16 19:26:48,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:48,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:26:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:26:49,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:26:49,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:26:49,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432658975] [2022-11-16 19:26:49,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432658975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:26:49,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:26:49,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:26:49,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752879512] [2022-11-16 19:26:49,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:26:49,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 19:26:49,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:26:49,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 19:26:49,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:26:49,292 INFO L87 Difference]: Start difference. First operand 3084 states and 11654 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:49,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:26:49,585 INFO L93 Difference]: Finished difference Result 3420 states and 12774 transitions. [2022-11-16 19:26:49,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 19:26:49,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 19:26:49,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:26:49,602 INFO L225 Difference]: With dead ends: 3420 [2022-11-16 19:26:49,603 INFO L226 Difference]: Without dead ends: 3212 [2022-11-16 19:26:49,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:26:49,604 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 51 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:26:49,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 52 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 19:26:49,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3212 states. [2022-11-16 19:26:49,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3212 to 3028. [2022-11-16 19:26:49,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3028 states, 3027 states have (on average 3.7581764122893953) internal successors, (11376), 3027 states have internal predecessors, (11376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:49,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3028 states to 3028 states and 11376 transitions. [2022-11-16 19:26:49,740 INFO L78 Accepts]: Start accepts. Automaton has 3028 states and 11376 transitions. Word has length 17 [2022-11-16 19:26:49,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:26:49,741 INFO L495 AbstractCegarLoop]: Abstraction has 3028 states and 11376 transitions. [2022-11-16 19:26:49,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:49,741 INFO L276 IsEmpty]: Start isEmpty. Operand 3028 states and 11376 transitions. [2022-11-16 19:26:49,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 19:26:49,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:26:49,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:26:49,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 19:26:49,747 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 19:26:49,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:26:49,748 INFO L85 PathProgramCache]: Analyzing trace with hash 142473712, now seen corresponding path program 2 times [2022-11-16 19:26:49,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:26:49,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250542768] [2022-11-16 19:26:49,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:49,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:26:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:26:50,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:26:50,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:26:50,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250542768] [2022-11-16 19:26:50,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250542768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:26:50,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:26:50,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:26:50,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417918275] [2022-11-16 19:26:50,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:26:50,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 19:26:50,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:26:50,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 19:26:50,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:26:50,919 INFO L87 Difference]: Start difference. First operand 3028 states and 11376 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:51,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:26:51,525 INFO L93 Difference]: Finished difference Result 4768 states and 17660 transitions. [2022-11-16 19:26:51,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 19:26:51,526 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 19:26:51,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:26:51,542 INFO L225 Difference]: With dead ends: 4768 [2022-11-16 19:26:51,542 INFO L226 Difference]: Without dead ends: 4416 [2022-11-16 19:26:51,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-16 19:26:51,543 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 85 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:26:51,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 38 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 19:26:51,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4416 states. [2022-11-16 19:26:51,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4416 to 2926. [2022-11-16 19:26:51,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2925 states have (on average 3.7623931623931623) internal successors, (11005), 2925 states have internal predecessors, (11005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:51,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 11005 transitions. [2022-11-16 19:26:51,644 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 11005 transitions. Word has length 17 [2022-11-16 19:26:51,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:26:51,645 INFO L495 AbstractCegarLoop]: Abstraction has 2926 states and 11005 transitions. [2022-11-16 19:26:51,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:51,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 11005 transitions. [2022-11-16 19:26:51,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 19:26:51,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:26:51,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:26:51,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 19:26:51,651 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 19:26:51,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:26:51,651 INFO L85 PathProgramCache]: Analyzing trace with hash -519197528, now seen corresponding path program 3 times [2022-11-16 19:26:51,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:26:51,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142343291] [2022-11-16 19:26:51,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:51,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:26:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:26:53,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:26:53,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:26:53,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142343291] [2022-11-16 19:26:53,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142343291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:26:53,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:26:53,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 19:26:53,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798282419] [2022-11-16 19:26:53,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:26:53,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 19:26:53,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:26:53,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 19:26:53,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:26:53,268 INFO L87 Difference]: Start difference. First operand 2926 states and 11005 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:53,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:26:53,821 INFO L93 Difference]: Finished difference Result 3832 states and 14266 transitions. [2022-11-16 19:26:53,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 19:26:53,822 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 19:26:53,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:26:53,834 INFO L225 Difference]: With dead ends: 3832 [2022-11-16 19:26:53,835 INFO L226 Difference]: Without dead ends: 3640 [2022-11-16 19:26:53,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-11-16 19:26:53,836 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 89 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:26:53,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 59 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 19:26:53,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2022-11-16 19:26:53,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 2842. [2022-11-16 19:26:53,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2842 states, 2841 states have (on average 3.751495952129532) internal successors, (10658), 2841 states have internal predecessors, (10658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:53,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 10658 transitions. [2022-11-16 19:26:53,929 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 10658 transitions. Word has length 17 [2022-11-16 19:26:53,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:26:53,929 INFO L495 AbstractCegarLoop]: Abstraction has 2842 states and 10658 transitions. [2022-11-16 19:26:53,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:53,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 10658 transitions. [2022-11-16 19:26:53,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 19:26:53,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:26:53,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:26:53,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 19:26:53,936 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 19:26:53,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:26:53,937 INFO L85 PathProgramCache]: Analyzing trace with hash -501051285, now seen corresponding path program 1 times [2022-11-16 19:26:53,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:26:53,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457763255] [2022-11-16 19:26:53,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:53,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:26:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:26:55,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:26:55,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:26:55,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457763255] [2022-11-16 19:26:55,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457763255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:26:55,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:26:55,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 19:26:55,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763619061] [2022-11-16 19:26:55,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:26:55,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 19:26:55,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:26:55,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 19:26:55,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:26:55,198 INFO L87 Difference]: Start difference. First operand 2842 states and 10658 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:55,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:26:55,639 INFO L93 Difference]: Finished difference Result 3154 states and 11780 transitions. [2022-11-16 19:26:55,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 19:26:55,640 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-16 19:26:55,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:26:55,651 INFO L225 Difference]: With dead ends: 3154 [2022-11-16 19:26:55,651 INFO L226 Difference]: Without dead ends: 3010 [2022-11-16 19:26:55,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-16 19:26:55,652 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 85 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:26:55,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 44 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 19:26:55,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2022-11-16 19:26:55,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 2802. [2022-11-16 19:26:55,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2802 states, 2801 states have (on average 3.7636558372009996) internal successors, (10542), 2801 states have internal predecessors, (10542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:55,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2802 states to 2802 states and 10542 transitions. [2022-11-16 19:26:55,734 INFO L78 Accepts]: Start accepts. Automaton has 2802 states and 10542 transitions. Word has length 18 [2022-11-16 19:26:55,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:26:55,734 INFO L495 AbstractCegarLoop]: Abstraction has 2802 states and 10542 transitions. [2022-11-16 19:26:55,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:55,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2802 states and 10542 transitions. [2022-11-16 19:26:55,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 19:26:55,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:26:55,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:26:55,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 19:26:55,741 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 19:26:55,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:26:55,742 INFO L85 PathProgramCache]: Analyzing trace with hash 758111247, now seen corresponding path program 1 times [2022-11-16 19:26:55,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:26:55,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484879163] [2022-11-16 19:26:55,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:55,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:26:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:26:56,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:26:56,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:26:56,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484879163] [2022-11-16 19:26:56,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484879163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:26:56,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:26:56,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:26:56,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566792209] [2022-11-16 19:26:56,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:26:56,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:26:56,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:26:56,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:26:56,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:26:56,267 INFO L87 Difference]: Start difference. First operand 2802 states and 10542 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:56,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:26:56,531 INFO L93 Difference]: Finished difference Result 5306 states and 19526 transitions. [2022-11-16 19:26:56,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 19:26:56,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-16 19:26:56,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:26:56,553 INFO L225 Difference]: With dead ends: 5306 [2022-11-16 19:26:56,553 INFO L226 Difference]: Without dead ends: 4018 [2022-11-16 19:26:56,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:26:56,554 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 53 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:26:56,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 27 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:26:56,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4018 states. [2022-11-16 19:26:56,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4018 to 2754. [2022-11-16 19:26:56,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2754 states, 2753 states have (on average 3.6287686160552126) internal successors, (9990), 2753 states have internal predecessors, (9990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:56,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2754 states to 2754 states and 9990 transitions. [2022-11-16 19:26:56,657 INFO L78 Accepts]: Start accepts. Automaton has 2754 states and 9990 transitions. Word has length 18 [2022-11-16 19:26:56,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:26:56,657 INFO L495 AbstractCegarLoop]: Abstraction has 2754 states and 9990 transitions. [2022-11-16 19:26:56,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:56,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2754 states and 9990 transitions. [2022-11-16 19:26:56,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 19:26:56,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:26:56,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:26:56,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 19:26:56,664 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 19:26:56,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:26:56,664 INFO L85 PathProgramCache]: Analyzing trace with hash 819647921, now seen corresponding path program 1 times [2022-11-16 19:26:56,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:26:56,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677925040] [2022-11-16 19:26:56,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:56,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:26:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:26:57,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:26:57,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:26:57,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677925040] [2022-11-16 19:26:57,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677925040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:26:57,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:26:57,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:26:57,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107980701] [2022-11-16 19:26:57,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:26:57,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 19:26:57,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:26:57,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 19:26:57,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:26:57,964 INFO L87 Difference]: Start difference. First operand 2754 states and 9990 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:58,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:26:58,765 INFO L93 Difference]: Finished difference Result 5682 states and 19696 transitions. [2022-11-16 19:26:58,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 19:26:58,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-16 19:26:58,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:26:58,780 INFO L225 Difference]: With dead ends: 5682 [2022-11-16 19:26:58,781 INFO L226 Difference]: Without dead ends: 4670 [2022-11-16 19:26:58,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-16 19:26:58,782 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 104 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 19:26:58,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 73 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 19:26:58,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4670 states. [2022-11-16 19:26:58,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4670 to 3446. [2022-11-16 19:26:58,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3446 states, 3445 states have (on average 3.5802612481857765) internal successors, (12334), 3445 states have internal predecessors, (12334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:58,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3446 states to 3446 states and 12334 transitions. [2022-11-16 19:26:58,900 INFO L78 Accepts]: Start accepts. Automaton has 3446 states and 12334 transitions. Word has length 18 [2022-11-16 19:26:58,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:26:58,901 INFO L495 AbstractCegarLoop]: Abstraction has 3446 states and 12334 transitions. [2022-11-16 19:26:58,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:26:58,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3446 states and 12334 transitions. [2022-11-16 19:26:58,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 19:26:58,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:26:58,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:26:58,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 19:26:58,912 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 19:26:58,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:26:58,912 INFO L85 PathProgramCache]: Analyzing trace with hash 14617265, now seen corresponding path program 2 times [2022-11-16 19:26:58,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:26:58,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789118686] [2022-11-16 19:26:58,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:26:58,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:26:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:26:59,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:26:59,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:26:59,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789118686] [2022-11-16 19:26:59,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789118686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:26:59,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:26:59,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 19:26:59,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756136565] [2022-11-16 19:26:59,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:26:59,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 19:26:59,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:26:59,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 19:26:59,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:26:59,632 INFO L87 Difference]: Start difference. First operand 3446 states and 12334 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:00,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:27:00,026 INFO L93 Difference]: Finished difference Result 4066 states and 14304 transitions. [2022-11-16 19:27:00,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 19:27:00,026 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-16 19:27:00,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:27:00,039 INFO L225 Difference]: With dead ends: 4066 [2022-11-16 19:27:00,039 INFO L226 Difference]: Without dead ends: 3826 [2022-11-16 19:27:00,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-16 19:27:00,043 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 51 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:27:00,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 81 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 19:27:00,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3826 states. [2022-11-16 19:27:00,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3826 to 3476. [2022-11-16 19:27:00,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3476 states, 3475 states have (on average 3.5706474820143885) internal successors, (12408), 3475 states have internal predecessors, (12408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:00,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3476 states to 3476 states and 12408 transitions. [2022-11-16 19:27:00,145 INFO L78 Accepts]: Start accepts. Automaton has 3476 states and 12408 transitions. Word has length 18 [2022-11-16 19:27:00,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:27:00,145 INFO L495 AbstractCegarLoop]: Abstraction has 3476 states and 12408 transitions. [2022-11-16 19:27:00,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:00,146 INFO L276 IsEmpty]: Start isEmpty. Operand 3476 states and 12408 transitions. [2022-11-16 19:27:00,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 19:27:00,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:27:00,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:27:00,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 19:27:00,153 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 19:27:00,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:27:00,154 INFO L85 PathProgramCache]: Analyzing trace with hash 121634225, now seen corresponding path program 3 times [2022-11-16 19:27:00,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:27:00,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015552945] [2022-11-16 19:27:00,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:00,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:27:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:27:00,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:27:00,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:27:00,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015552945] [2022-11-16 19:27:00,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015552945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:27:00,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:27:00,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 19:27:00,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950158221] [2022-11-16 19:27:00,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:27:00,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 19:27:00,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:27:00,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 19:27:00,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:27:00,906 INFO L87 Difference]: Start difference. First operand 3476 states and 12408 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:01,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:27:01,225 INFO L93 Difference]: Finished difference Result 3780 states and 13280 transitions. [2022-11-16 19:27:01,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 19:27:01,226 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-16 19:27:01,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:27:01,238 INFO L225 Difference]: With dead ends: 3780 [2022-11-16 19:27:01,239 INFO L226 Difference]: Without dead ends: 3540 [2022-11-16 19:27:01,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-16 19:27:01,239 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 74 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:27:01,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 60 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 19:27:01,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3540 states. [2022-11-16 19:27:01,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3540 to 3182. [2022-11-16 19:27:01,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3182 states, 3181 states have (on average 3.5646023263124804) internal successors, (11339), 3181 states have internal predecessors, (11339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:01,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3182 states to 3182 states and 11339 transitions. [2022-11-16 19:27:01,395 INFO L78 Accepts]: Start accepts. Automaton has 3182 states and 11339 transitions. Word has length 18 [2022-11-16 19:27:01,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:27:01,396 INFO L495 AbstractCegarLoop]: Abstraction has 3182 states and 11339 transitions. [2022-11-16 19:27:01,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:01,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3182 states and 11339 transitions. [2022-11-16 19:27:01,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 19:27:01,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:27:01,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:27:01,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 19:27:01,407 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 19:27:01,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:27:01,409 INFO L85 PathProgramCache]: Analyzing trace with hash 2100130571, now seen corresponding path program 4 times [2022-11-16 19:27:01,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:27:01,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371497630] [2022-11-16 19:27:01,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:01,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:27:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:27:02,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:27:02,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:27:02,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371497630] [2022-11-16 19:27:02,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371497630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:27:02,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:27:02,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 19:27:02,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88812034] [2022-11-16 19:27:02,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:27:02,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 19:27:02,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:27:02,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 19:27:02,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:27:02,368 INFO L87 Difference]: Start difference. First operand 3182 states and 11339 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:02,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:27:02,747 INFO L93 Difference]: Finished difference Result 3614 states and 12627 transitions. [2022-11-16 19:27:02,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 19:27:02,748 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-16 19:27:02,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:27:02,758 INFO L225 Difference]: With dead ends: 3614 [2022-11-16 19:27:02,758 INFO L226 Difference]: Without dead ends: 3342 [2022-11-16 19:27:02,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-16 19:27:02,763 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 103 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:27:02,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 48 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 19:27:02,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3342 states. [2022-11-16 19:27:02,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3342 to 2974. [2022-11-16 19:27:02,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2973 states have (on average 3.5634039690548267) internal successors, (10594), 2973 states have internal predecessors, (10594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:02,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 10594 transitions. [2022-11-16 19:27:02,846 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 10594 transitions. Word has length 18 [2022-11-16 19:27:02,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:27:02,846 INFO L495 AbstractCegarLoop]: Abstraction has 2974 states and 10594 transitions. [2022-11-16 19:27:02,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:02,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 10594 transitions. [2022-11-16 19:27:02,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 19:27:02,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:27:02,852 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:27:02,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 19:27:02,852 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 19:27:02,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:27:02,853 INFO L85 PathProgramCache]: Analyzing trace with hash 910494351, now seen corresponding path program 2 times [2022-11-16 19:27:02,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:27:02,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462812615] [2022-11-16 19:27:02,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:02,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:27:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:27:03,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:27:03,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:27:03,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462812615] [2022-11-16 19:27:03,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462812615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:27:03,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:27:03,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:27:03,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892294618] [2022-11-16 19:27:03,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:27:03,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:27:03,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:27:03,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:27:03,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:27:03,042 INFO L87 Difference]: Start difference. First operand 2974 states and 10594 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:03,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:27:03,162 INFO L93 Difference]: Finished difference Result 3065 states and 9918 transitions. [2022-11-16 19:27:03,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:27:03,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-16 19:27:03,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:27:03,169 INFO L225 Difference]: With dead ends: 3065 [2022-11-16 19:27:03,170 INFO L226 Difference]: Without dead ends: 2305 [2022-11-16 19:27:03,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:27:03,174 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 58 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:27:03,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 15 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:27:03,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2305 states. [2022-11-16 19:27:03,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2305 to 2305. [2022-11-16 19:27:03,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2305 states, 2304 states have (on average 3.2174479166666665) internal successors, (7413), 2304 states have internal predecessors, (7413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:03,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 7413 transitions. [2022-11-16 19:27:03,233 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 7413 transitions. Word has length 18 [2022-11-16 19:27:03,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:27:03,234 INFO L495 AbstractCegarLoop]: Abstraction has 2305 states and 7413 transitions. [2022-11-16 19:27:03,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:03,235 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 7413 transitions. [2022-11-16 19:27:03,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 19:27:03,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:27:03,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:27:03,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 19:27:03,239 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 19:27:03,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:27:03,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1337183576, now seen corresponding path program 1 times [2022-11-16 19:27:03,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:27:03,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118307907] [2022-11-16 19:27:03,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:03,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:27:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:27:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:27:03,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:27:03,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118307907] [2022-11-16 19:27:03,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118307907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:27:03,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:27:03,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:27:03,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645946566] [2022-11-16 19:27:03,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:27:03,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:27:03,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:27:03,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:27:03,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:27:03,416 INFO L87 Difference]: Start difference. First operand 2305 states and 7413 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:03,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:27:03,573 INFO L93 Difference]: Finished difference Result 1980 states and 5823 transitions. [2022-11-16 19:27:03,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 19:27:03,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-16 19:27:03,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:27:03,578 INFO L225 Difference]: With dead ends: 1980 [2022-11-16 19:27:03,578 INFO L226 Difference]: Without dead ends: 1513 [2022-11-16 19:27:03,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:27:03,578 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 103 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:27:03,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 20 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:27:03,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2022-11-16 19:27:03,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1505. [2022-11-16 19:27:03,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1504 states have (on average 2.901595744680851) internal successors, (4364), 1504 states have internal predecessors, (4364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:03,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 4364 transitions. [2022-11-16 19:27:03,612 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 4364 transitions. Word has length 19 [2022-11-16 19:27:03,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:27:03,613 INFO L495 AbstractCegarLoop]: Abstraction has 1505 states and 4364 transitions. [2022-11-16 19:27:03,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:03,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 4364 transitions. [2022-11-16 19:27:03,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 19:27:03,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:27:03,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:27:03,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 19:27:03,616 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 19:27:03,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:27:03,617 INFO L85 PathProgramCache]: Analyzing trace with hash -661909492, now seen corresponding path program 1 times [2022-11-16 19:27:03,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:27:03,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221538824] [2022-11-16 19:27:03,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:03,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:27:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:27:04,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:27:04,125 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:27:04,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221538824] [2022-11-16 19:27:04,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221538824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:27:04,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:27:04,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:27:04,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697498548] [2022-11-16 19:27:04,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:27:04,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:27:04,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:27:04,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:27:04,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:27:04,127 INFO L87 Difference]: Start difference. First operand 1505 states and 4364 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:04,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:27:04,394 INFO L93 Difference]: Finished difference Result 2292 states and 6469 transitions. [2022-11-16 19:27:04,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:27:04,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-16 19:27:04,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:27:04,397 INFO L225 Difference]: With dead ends: 2292 [2022-11-16 19:27:04,397 INFO L226 Difference]: Without dead ends: 1558 [2022-11-16 19:27:04,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:27:04,398 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 54 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:27:04,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 29 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:27:04,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2022-11-16 19:27:04,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1402. [2022-11-16 19:27:04,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1401 states have (on average 2.7551748750892218) internal successors, (3860), 1401 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:04,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 3860 transitions. [2022-11-16 19:27:04,428 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 3860 transitions. Word has length 21 [2022-11-16 19:27:04,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:27:04,428 INFO L495 AbstractCegarLoop]: Abstraction has 1402 states and 3860 transitions. [2022-11-16 19:27:04,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:04,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 3860 transitions. [2022-11-16 19:27:04,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 19:27:04,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:27:04,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:27:04,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 19:27:04,432 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 19:27:04,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:27:04,432 INFO L85 PathProgramCache]: Analyzing trace with hash 881115807, now seen corresponding path program 1 times [2022-11-16 19:27:04,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:27:04,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905839442] [2022-11-16 19:27:04,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:04,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:27:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:27:04,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:27:04,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:27:04,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905839442] [2022-11-16 19:27:04,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905839442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:27:04,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:27:04,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:27:04,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706045175] [2022-11-16 19:27:04,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:27:04,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 19:27:04,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:27:04,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 19:27:04,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:27:04,613 INFO L87 Difference]: Start difference. First operand 1402 states and 3860 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:04,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:27:04,800 INFO L93 Difference]: Finished difference Result 1209 states and 3268 transitions. [2022-11-16 19:27:04,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:27:04,800 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-16 19:27:04,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:27:04,803 INFO L225 Difference]: With dead ends: 1209 [2022-11-16 19:27:04,803 INFO L226 Difference]: Without dead ends: 998 [2022-11-16 19:27:04,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-16 19:27:04,804 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 174 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:27:04,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 25 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:27:04,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-11-16 19:27:04,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 882. [2022-11-16 19:27:04,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 2.724177071509648) internal successors, (2400), 881 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:04,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 2400 transitions. [2022-11-16 19:27:04,822 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 2400 transitions. Word has length 22 [2022-11-16 19:27:04,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:27:04,823 INFO L495 AbstractCegarLoop]: Abstraction has 882 states and 2400 transitions. [2022-11-16 19:27:04,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:04,823 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 2400 transitions. [2022-11-16 19:27:04,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 19:27:04,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:27:04,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:27:04,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 19:27:04,826 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 19:27:04,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:27:04,826 INFO L85 PathProgramCache]: Analyzing trace with hash 786317717, now seen corresponding path program 1 times [2022-11-16 19:27:04,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:27:04,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024357446] [2022-11-16 19:27:04,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:04,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:27:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:27:05,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:27:05,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:27:05,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024357446] [2022-11-16 19:27:05,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024357446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:27:05,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:27:05,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:27:05,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152718476] [2022-11-16 19:27:05,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:27:05,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 19:27:05,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:27:05,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 19:27:05,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:27:05,365 INFO L87 Difference]: Start difference. First operand 882 states and 2400 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:05,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:27:05,810 INFO L93 Difference]: Finished difference Result 1231 states and 3265 transitions. [2022-11-16 19:27:05,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 19:27:05,811 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-16 19:27:05,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:27:05,812 INFO L225 Difference]: With dead ends: 1231 [2022-11-16 19:27:05,812 INFO L226 Difference]: Without dead ends: 707 [2022-11-16 19:27:05,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-16 19:27:05,813 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 61 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:27:05,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 43 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 19:27:05,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2022-11-16 19:27:05,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 630. [2022-11-16 19:27:05,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 629 states have (on average 2.453100158982512) internal successors, (1543), 629 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:05,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1543 transitions. [2022-11-16 19:27:05,823 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1543 transitions. Word has length 25 [2022-11-16 19:27:05,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:27:05,823 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 1543 transitions. [2022-11-16 19:27:05,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:05,823 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1543 transitions. [2022-11-16 19:27:05,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 19:27:05,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:27:05,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:27:05,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 19:27:05,825 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 19:27:05,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:27:05,825 INFO L85 PathProgramCache]: Analyzing trace with hash -623011171, now seen corresponding path program 1 times [2022-11-16 19:27:05,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:27:05,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972134614] [2022-11-16 19:27:05,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:05,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:27:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:27:06,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:27:06,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:27:06,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972134614] [2022-11-16 19:27:06,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972134614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:27:06,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:27:06,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 19:27:06,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549646605] [2022-11-16 19:27:06,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:27:06,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 19:27:06,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:27:06,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 19:27:06,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:27:06,035 INFO L87 Difference]: Start difference. First operand 630 states and 1543 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:06,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:27:06,203 INFO L93 Difference]: Finished difference Result 590 states and 1465 transitions. [2022-11-16 19:27:06,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 19:27:06,204 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-16 19:27:06,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:27:06,204 INFO L225 Difference]: With dead ends: 590 [2022-11-16 19:27:06,204 INFO L226 Difference]: Without dead ends: 139 [2022-11-16 19:27:06,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-11-16 19:27:06,205 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 147 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:27:06,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 16 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:27:06,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-16 19:27:06,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 115. [2022-11-16 19:27:06,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 2.1403508771929824) internal successors, (244), 114 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:06,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 244 transitions. [2022-11-16 19:27:06,208 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 244 transitions. Word has length 25 [2022-11-16 19:27:06,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:27:06,208 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 244 transitions. [2022-11-16 19:27:06,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:27:06,208 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 244 transitions. [2022-11-16 19:27:06,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 19:27:06,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:27:06,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:27:06,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 19:27:06,209 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 19:27:06,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:27:06,210 INFO L85 PathProgramCache]: Analyzing trace with hash -24965349, now seen corresponding path program 1 times [2022-11-16 19:27:06,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:27:06,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757316528] [2022-11-16 19:27:06,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:06,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:27:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 19:27:06,246 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 19:27:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 19:27:06,306 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 19:27:06,307 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 19:27:06,308 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-11-16 19:27:06,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-11-16 19:27:06,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-11-16 19:27:06,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-11-16 19:27:06,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-11-16 19:27:06,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2022-11-16 19:27:06,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-11-16 19:27:06,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 19:27:06,313 INFO L444 BasicCegarLoop]: Path program histogram: [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:27:06,319 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 19:27:06,319 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 19:27:06,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 07:27:06 BasicIcfg [2022-11-16 19:27:06,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 19:27:06,414 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 19:27:06,414 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 19:27:06,415 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 19:27:06,415 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:26:30" (3/4) ... [2022-11-16 19:27:06,417 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-16 19:27:06,529 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7924b8a-2793-4a1c-b954-f1146259b8ab/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 19:27:06,529 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 19:27:06,534 INFO L158 Benchmark]: Toolchain (without parser) took 37697.82ms. Allocated memory was 151.0MB in the beginning and 1.0GB in the end (delta: 887.1MB). Free memory was 113.9MB in the beginning and 327.3MB in the end (delta: -213.3MB). Peak memory consumption was 672.6MB. Max. memory is 16.1GB. [2022-11-16 19:27:06,534 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 90.2MB. Free memory was 63.0MB in the beginning and 63.0MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 19:27:06,535 INFO L158 Benchmark]: CACSL2BoogieTranslator took 736.40ms. Allocated memory is still 151.0MB. Free memory was 113.9MB in the beginning and 112.2MB in the end (delta: 1.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 19:27:06,535 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.98ms. Allocated memory is still 151.0MB. Free memory was 112.2MB in the beginning and 110.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 19:27:06,535 INFO L158 Benchmark]: Boogie Preprocessor took 62.16ms. Allocated memory is still 151.0MB. Free memory was 109.2MB in the beginning and 108.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 19:27:06,536 INFO L158 Benchmark]: RCFGBuilder took 985.02ms. Allocated memory is still 151.0MB. Free memory was 108.0MB in the beginning and 71.5MB in the end (delta: 36.5MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2022-11-16 19:27:06,536 INFO L158 Benchmark]: TraceAbstraction took 35700.64ms. Allocated memory was 151.0MB in the beginning and 1.0GB in the end (delta: 887.1MB). Free memory was 71.1MB in the beginning and 344.0MB in the end (delta: -272.9MB). Peak memory consumption was 618.4MB. Max. memory is 16.1GB. [2022-11-16 19:27:06,538 INFO L158 Benchmark]: Witness Printer took 114.74ms. Allocated memory is still 1.0GB. Free memory was 344.0MB in the beginning and 327.3MB in the end (delta: 16.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-16 19:27:06,544 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 90.2MB. Free memory was 63.0MB in the beginning and 63.0MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 736.40ms. Allocated memory is still 151.0MB. Free memory was 113.9MB in the beginning and 112.2MB in the end (delta: 1.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.98ms. Allocated memory is still 151.0MB. Free memory was 112.2MB in the beginning and 110.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.16ms. Allocated memory is still 151.0MB. Free memory was 109.2MB in the beginning and 108.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 985.02ms. Allocated memory is still 151.0MB. Free memory was 108.0MB in the beginning and 71.5MB in the end (delta: 36.5MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 35700.64ms. Allocated memory was 151.0MB in the beginning and 1.0GB in the end (delta: 887.1MB). Free memory was 71.1MB in the beginning and 344.0MB in the end (delta: -272.9MB). Peak memory consumption was 618.4MB. Max. memory is 16.1GB. * Witness Printer took 114.74ms. Allocated memory is still 1.0GB. Free memory was 344.0MB in the beginning and 327.3MB in the end (delta: 16.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.6s, 146 PlacesBefore, 47 PlacesAfterwards, 135 TransitionsBefore, 35 TransitionsAfterwards, 3218 CoEnabledTransitionPairs, 7 FixpointIterations, 44 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 112 TotalNumberOfCompositions, 8828 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4073, independent: 3851, independent conditional: 0, independent unconditional: 3851, dependent: 222, dependent conditional: 0, dependent unconditional: 222, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2204, independent: 2146, independent conditional: 0, independent unconditional: 2146, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2204, independent: 2114, independent conditional: 0, independent unconditional: 2114, dependent: 90, dependent conditional: 0, dependent unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 90, independent: 32, independent conditional: 0, independent unconditional: 32, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 380, independent: 45, independent conditional: 0, independent unconditional: 45, dependent: 335, dependent conditional: 0, dependent unconditional: 335, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4073, independent: 1705, independent conditional: 0, independent unconditional: 1705, dependent: 164, dependent conditional: 0, dependent unconditional: 164, unknown: 2204, unknown conditional: 0, unknown unconditional: 2204] , Statistics on independence cache: Total cache size (in pairs): 263, Positive cache size: 242, Positive conditional cache size: 0, Positive unconditional cache size: 242, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L743] 0 _Bool weak$$choice0; [L744] 0 _Bool weak$$choice2; [L737] 0 int y$w_buff0; [L739] 0 int y$w_buff1; [L727] 0 _Bool y$r_buff0_thd2; [L728] 0 _Bool y$r_buff0_thd3; [L724] 0 int y$mem_tmp; [L729] 0 _Bool y$r_buff0_thd4; [L714] 0 int __unbuffered_p3_EBX = 0; [L725] 0 _Bool y$r_buff0_thd0; [L726] 0 _Bool y$r_buff0_thd1; [L735] 0 _Bool y$read_delayed; [L716] 0 int a = 0; [L710] 0 int __unbuffered_cnt = 0; [L723] 0 _Bool y$flush_delayed; [L740] 0 _Bool y$w_buff1_used; [L718] 0 _Bool main$tmp_guard1; [L717] 0 _Bool main$tmp_guard0; [L712] 0 int __unbuffered_p3_EAX = 0; [L736] 0 int *y$read_delayed_var; [L738] 0 _Bool y$w_buff0_used; [L720] 0 int x = 0; [L730] 0 _Bool y$r_buff1_thd0; [L722] 0 int y = 0; [L732] 0 _Bool y$r_buff1_thd2; [L742] 0 int z = 0; [L731] 0 _Bool y$r_buff1_thd1; [L734] 0 _Bool y$r_buff1_thd4; [L733] 0 _Bool y$r_buff1_thd3; [L844] 0 pthread_t t805; [L845] FCALL, FORK 0 pthread_create(&t805, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t805, ((void *)0), P0, ((void *)0))=-2, t805={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L846] 0 pthread_t t806; [L847] FCALL, FORK 0 pthread_create(&t806, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t806, ((void *)0), P1, ((void *)0))=-1, t805={5:0}, t806={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L848] 0 pthread_t t807; [L849] FCALL, FORK 0 pthread_create(&t807, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t807, ((void *)0), P2, ((void *)0))=0, t805={5:0}, t806={6:0}, t807={7:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L850] 0 pthread_t t808; [L851] FCALL, FORK 0 pthread_create(&t808, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t808, ((void *)0), P3, ((void *)0))=1, t805={5:0}, t806={6:0}, t807={7:0}, t808={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L783] 3 y$w_buff1 = y$w_buff0 [L784] 3 y$w_buff0 = 2 [L785] 3 y$w_buff1_used = y$w_buff0_used [L786] 3 y$w_buff0_used = (_Bool)1 [L787] CALL 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 3 !(!expression) [L787] RET 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L788] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L789] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L790] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L791] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L792] 3 y$r_buff1_thd4 = y$r_buff0_thd4 [L793] 3 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=0] [L796] 3 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L813] 4 z = 2 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L816] 4 __unbuffered_p3_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L819] 4 __unbuffered_p3_EBX = a VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L822] 4 y = y$w_buff0_used && y$r_buff0_thd4 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd4 ? y$w_buff1 : y) [L823] 4 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd4 ? (_Bool)0 : y$w_buff0_used [L824] 4 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd4 || y$w_buff1_used && y$r_buff1_thd4 ? (_Bool)0 : y$w_buff1_used [L825] 4 y$r_buff0_thd4 = y$w_buff0_used && y$r_buff0_thd4 ? (_Bool)0 : y$r_buff0_thd4 [L826] 4 y$r_buff1_thd4 = y$w_buff0_used && y$r_buff0_thd4 || y$w_buff1_used && y$r_buff1_thd4 ? (_Bool)0 : y$r_buff1_thd4 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L748] 1 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L751] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L756] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L758] 1 return 0; [L763] 2 x = 2 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L766] 2 y = 1 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L769] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L770] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L771] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L772] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L773] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L776] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L778] 2 return 0; [L799] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L800] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L801] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L802] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L803] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=2, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L806] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L808] 3 return 0; [L829] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L831] 4 return 0; [L853] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L855] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L855] RET 0 assume_abort_if_not(main$tmp_guard0) [L857] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L858] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L859] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L860] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L861] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t805={5:0}, t806={6:0}, t807={7:0}, t808={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L864] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L865] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L866] 0 y$flush_delayed = weak$$choice2 [L867] 0 y$mem_tmp = y [L868] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L869] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L870] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L871] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L872] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L873] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L874] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L875] 0 main$tmp_guard1 = !(x == 2 && y == 2 && z == 2 && __unbuffered_p3_EAX == 2 && __unbuffered_p3_EBX == 0) [L876] 0 y = y$flush_delayed ? y$mem_tmp : y [L877] 0 y$flush_delayed = (_Bool)0 [L879] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=1, \old(expression)=0, \result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=1, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 847]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 851]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 845]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 171 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 35.5s, OverallIterations: 24, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.1s, AutomataDifference: 9.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1730 SdHoareTripleChecker+Valid, 6.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1730 mSDsluCounter, 893 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 622 mSDsCounter, 246 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4065 IncrementalHoareTripleChecker+Invalid, 4311 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 246 mSolverCounterUnsat, 271 mSDtfsCounter, 4065 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 155 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4130occurred in iteration=0, InterpolantAutomatonStates: 155, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.4s AutomataMinimizationTime, 23 MinimizatonAttempts, 11959 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 16.5s InterpolantComputationTime, 427 NumberOfCodeBlocks, 427 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 376 ConstructedInterpolants, 0 QuantifiedInterpolants, 5682 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 23 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-16 19:27:06,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7924b8a-2793-4a1c-b954-f1146259b8ab/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE