./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51113c21-b07a-418e-be46-c70dfc6d72b0/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51113c21-b07a-418e-be46-c70dfc6d72b0/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51113c21-b07a-418e-be46-c70dfc6d72b0/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51113c21-b07a-418e-be46-c70dfc6d72b0/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51113c21-b07a-418e-be46-c70dfc6d72b0/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51113c21-b07a-418e-be46-c70dfc6d72b0/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:45:03,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:45:03,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:45:04,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:45:04,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:45:04,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:45:04,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:45:04,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:45:04,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:45:04,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:45:04,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:45:04,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:45:04,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:45:04,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:45:04,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:45:04,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:45:04,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:45:04,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:45:04,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:45:04,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:45:04,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:45:04,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:45:04,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:45:04,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:45:04,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:45:04,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:45:04,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:45:04,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:45:04,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:45:04,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:45:04,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:45:04,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:45:04,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:45:04,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:45:04,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:45:04,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:45:04,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:45:04,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:45:04,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:45:04,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:45:04,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:45:04,079 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51113c21-b07a-418e-be46-c70dfc6d72b0/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 23:45:04,123 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:45:04,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:45:04,124 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:45:04,125 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:45:04,126 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:45:04,126 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:45:04,127 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:45:04,127 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:45:04,127 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:45:04,127 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:45:04,129 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:45:04,129 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:45:04,129 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:45:04,130 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:45:04,130 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:45:04,130 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:45:04,130 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:45:04,131 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:45:04,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:45:04,132 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:45:04,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:45:04,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:45:04,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:45:04,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:45:04,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:45:04,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:45:04,135 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:45:04,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:45:04,136 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:45:04,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:45:04,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:45:04,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:45:04,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:45:04,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:45:04,138 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:45:04,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:45:04,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:45:04,139 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:45:04,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:45:04,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:45:04,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:45:04,140 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_51113c21-b07a-418e-be46-c70dfc6d72b0/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51113c21-b07a-418e-be46-c70dfc6d72b0/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 [2022-11-25 23:45:04,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:45:04,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:45:04,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:45:04,559 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:45:04,560 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:45:04,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51113c21-b07a-418e-be46-c70dfc6d72b0/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2022-11-25 23:45:07,758 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:45:07,988 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:45:07,989 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51113c21-b07a-418e-be46-c70dfc6d72b0/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2022-11-25 23:45:07,996 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51113c21-b07a-418e-be46-c70dfc6d72b0/bin/utaipan-ByfvJB40ur/data/a74009a74/82656fc04c5a4bf685b674feb95cd304/FLAGf2f149ff5 [2022-11-25 23:45:08,011 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51113c21-b07a-418e-be46-c70dfc6d72b0/bin/utaipan-ByfvJB40ur/data/a74009a74/82656fc04c5a4bf685b674feb95cd304 [2022-11-25 23:45:08,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:45:08,016 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:45:08,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:45:08,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:45:08,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:45:08,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:45:08" (1/1) ... [2022-11-25 23:45:08,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62fd2f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:08, skipping insertion in model container [2022-11-25 23:45:08,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:45:08" (1/1) ... [2022-11-25 23:45:08,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:45:08,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:45:08,268 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,268 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,269 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,270 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,270 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,271 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,271 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,273 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,273 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,274 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,275 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,276 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,279 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,280 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,281 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,282 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,283 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,284 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,285 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,288 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,289 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,292 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,293 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,294 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,311 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,315 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,316 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,317 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,318 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,318 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,320 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,320 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,324 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,325 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,326 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,329 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,330 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,331 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,332 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,332 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,333 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,334 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,334 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,336 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,337 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,337 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,338 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,349 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51113c21-b07a-418e-be46-c70dfc6d72b0/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4722,4735] [2022-11-25 23:45:08,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:45:08,369 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:45:08,383 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,384 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,384 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,385 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,385 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,385 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,386 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,386 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,387 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,387 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,387 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,388 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,389 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,389 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,389 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,390 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,390 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,390 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,391 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,391 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,392 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,392 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,392 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,393 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,399 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,399 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,400 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,400 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,400 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,401 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,401 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,402 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,402 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,403 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,403 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,403 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,404 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,404 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,405 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,405 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,405 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,406 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:45:08,406 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:45:08,414 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51113c21-b07a-418e-be46-c70dfc6d72b0/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4722,4735] [2022-11-25 23:45:08,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:45:08,431 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:45:08,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:08 WrapperNode [2022-11-25 23:45:08,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:45:08,433 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:45:08,433 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:45:08,434 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:45:08,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:08" (1/1) ... [2022-11-25 23:45:08,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:08" (1/1) ... [2022-11-25 23:45:08,482 INFO L138 Inliner]: procedures = 25, calls = 98, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 253 [2022-11-25 23:45:08,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:45:08,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:45:08,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:45:08,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:45:08,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:08" (1/1) ... [2022-11-25 23:45:08,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:08" (1/1) ... [2022-11-25 23:45:08,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:08" (1/1) ... [2022-11-25 23:45:08,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:08" (1/1) ... [2022-11-25 23:45:08,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:08" (1/1) ... [2022-11-25 23:45:08,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:08" (1/1) ... [2022-11-25 23:45:08,511 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:08" (1/1) ... [2022-11-25 23:45:08,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:08" (1/1) ... [2022-11-25 23:45:08,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:45:08,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:45:08,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:45:08,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:45:08,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:08" (1/1) ... [2022-11-25 23:45:08,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:45:08,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51113c21-b07a-418e-be46-c70dfc6d72b0/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:45:08,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51113c21-b07a-418e-be46-c70dfc6d72b0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:45:08,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51113c21-b07a-418e-be46-c70dfc6d72b0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:45:08,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:45:08,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:45:08,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:45:08,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:45:08,610 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 23:45:08,610 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 23:45:08,610 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 23:45:08,610 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 23:45:08,610 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 23:45:08,610 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 23:45:08,610 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-25 23:45:08,611 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-25 23:45:08,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:45:08,611 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-25 23:45:08,611 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-25 23:45:08,611 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-25 23:45:08,611 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-25 23:45:08,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 23:45:08,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 23:45:08,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:45:08,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:45:08,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:45:08,614 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 23:45:08,790 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:45:08,792 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:45:09,313 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:45:09,437 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:45:09,443 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:45:09,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:45:09 BoogieIcfgContainer [2022-11-25 23:45:09,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:45:09,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:45:09,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:45:09,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:45:09,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:45:08" (1/3) ... [2022-11-25 23:45:09,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a56c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:45:09, skipping insertion in model container [2022-11-25 23:45:09,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:45:08" (2/3) ... [2022-11-25 23:45:09,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a56c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:45:09, skipping insertion in model container [2022-11-25 23:45:09,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:45:09" (3/3) ... [2022-11-25 23:45:09,458 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2022-11-25 23:45:09,469 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 23:45:09,480 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:45:09,481 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:45:09,481 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 23:45:09,654 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-11-25 23:45:09,697 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 23:45:09,721 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 246 places, 235 transitions, 542 flow [2022-11-25 23:45:09,731 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 246 places, 235 transitions, 542 flow [2022-11-25 23:45:09,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 235 transitions, 542 flow [2022-11-25 23:45:09,881 INFO L130 PetriNetUnfolder]: 8/207 cut-off events. [2022-11-25 23:45:09,881 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 23:45:09,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 207 events. 8/207 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 238 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 177. Up to 3 conditions per place. [2022-11-25 23:45:09,898 INFO L119 LiptonReduction]: Number of co-enabled transitions 7736 [2022-11-25 23:45:17,627 INFO L134 LiptonReduction]: Checked pairs total: 43996 [2022-11-25 23:45:17,628 INFO L136 LiptonReduction]: Total number of compositions: 174 [2022-11-25 23:45:17,636 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 99 places, 86 transitions, 244 flow [2022-11-25 23:45:18,780 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 18624 states, 18623 states have (on average 4.349943618106642) internal successors, (81009), 18623 states have internal predecessors, (81009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:18,817 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:45:18,825 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;@352bcd04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:45:18,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-25 23:45:18,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 18624 states, 18623 states have (on average 4.349943618106642) internal successors, (81009), 18623 states have internal predecessors, (81009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:19,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-25 23:45:19,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:45:19,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:45:19,126 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 23:45:19,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:45:19,130 INFO L85 PathProgramCache]: Analyzing trace with hash 567602473, now seen corresponding path program 1 times [2022-11-25 23:45:19,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:45:19,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689069729] [2022-11-25 23:45:19,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:19,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:45:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:19,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:45:19,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:45:19,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689069729] [2022-11-25 23:45:19,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689069729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:45:19,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:45:19,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:45:19,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649823341] [2022-11-25 23:45:19,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:45:19,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 23:45:19,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:45:19,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 23:45:19,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 23:45:19,462 INFO L87 Difference]: Start difference. First operand has 18624 states, 18623 states have (on average 4.349943618106642) internal successors, (81009), 18623 states have internal predecessors, (81009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:20,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:45:20,003 INFO L93 Difference]: Finished difference Result 18624 states and 80623 transitions. [2022-11-25 23:45:20,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 23:45:20,005 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-11-25 23:45:20,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:45:20,218 INFO L225 Difference]: With dead ends: 18624 [2022-11-25 23:45:20,218 INFO L226 Difference]: Without dead ends: 18624 [2022-11-25 23:45:20,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 23:45:20,223 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:45:20,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:45:20,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18624 states. [2022-11-25 23:45:21,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18624 to 18624. [2022-11-25 23:45:21,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18624 states, 18623 states have (on average 4.329216560167535) internal successors, (80623), 18623 states have internal predecessors, (80623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:21,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18624 states to 18624 states and 80623 transitions. [2022-11-25 23:45:21,638 INFO L78 Accepts]: Start accepts. Automaton has 18624 states and 80623 transitions. Word has length 55 [2022-11-25 23:45:21,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:45:21,639 INFO L495 AbstractCegarLoop]: Abstraction has 18624 states and 80623 transitions. [2022-11-25 23:45:21,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:21,644 INFO L276 IsEmpty]: Start isEmpty. Operand 18624 states and 80623 transitions. [2022-11-25 23:45:21,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:45:21,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:45:21,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:45:21,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:45:21,754 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 23:45:21,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:45:21,755 INFO L85 PathProgramCache]: Analyzing trace with hash -901178867, now seen corresponding path program 1 times [2022-11-25 23:45:21,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:45:21,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490567294] [2022-11-25 23:45:21,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:21,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:45:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:22,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:45:22,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:45:22,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490567294] [2022-11-25 23:45:22,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490567294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:45:22,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:45:22,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:45:22,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128529043] [2022-11-25 23:45:22,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:45:22,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:45:22,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:45:22,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:45:22,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:45:22,816 INFO L87 Difference]: Start difference. First operand 18624 states and 80623 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:23,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:45:23,521 INFO L93 Difference]: Finished difference Result 17088 states and 73063 transitions. [2022-11-25 23:45:23,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:45:23,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-25 23:45:23,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:45:23,697 INFO L225 Difference]: With dead ends: 17088 [2022-11-25 23:45:23,697 INFO L226 Difference]: Without dead ends: 17088 [2022-11-25 23:45:23,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:45:23,700 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 50 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:45:23,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 71 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:45:23,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17088 states. [2022-11-25 23:45:24,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17088 to 17088. [2022-11-25 23:45:24,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17088 states, 17087 states have (on average 4.275940773687599) internal successors, (73063), 17087 states have internal predecessors, (73063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:24,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17088 states to 17088 states and 73063 transitions. [2022-11-25 23:45:24,764 INFO L78 Accepts]: Start accepts. Automaton has 17088 states and 73063 transitions. Word has length 63 [2022-11-25 23:45:24,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:45:24,766 INFO L495 AbstractCegarLoop]: Abstraction has 17088 states and 73063 transitions. [2022-11-25 23:45:24,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:24,766 INFO L276 IsEmpty]: Start isEmpty. Operand 17088 states and 73063 transitions. [2022-11-25 23:45:25,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:45:25,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:45:25,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:45:25,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:45:25,064 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 23:45:25,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:45:25,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1397668173, now seen corresponding path program 2 times [2022-11-25 23:45:25,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:45:25,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471771533] [2022-11-25 23:45:25,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:25,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:45:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:26,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:45:26,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:45:26,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471771533] [2022-11-25 23:45:26,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471771533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:45:26,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:45:26,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 23:45:26,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567716195] [2022-11-25 23:45:26,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:45:26,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 23:45:26,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:45:26,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 23:45:26,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-11-25 23:45:26,289 INFO L87 Difference]: Start difference. First operand 17088 states and 73063 transitions. Second operand has 15 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:30,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:45:30,952 INFO L93 Difference]: Finished difference Result 22197 states and 92944 transitions. [2022-11-25 23:45:30,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-25 23:45:30,954 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-25 23:45:30,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:45:31,181 INFO L225 Difference]: With dead ends: 22197 [2022-11-25 23:45:31,181 INFO L226 Difference]: Without dead ends: 21816 [2022-11-25 23:45:31,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=169, Invalid=1471, Unknown=0, NotChecked=0, Total=1640 [2022-11-25 23:45:31,185 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 728 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 4823 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 4827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 4823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:45:31,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1541 Invalid, 4827 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 4823 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-25 23:45:31,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21816 states. [2022-11-25 23:45:32,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21816 to 18876. [2022-11-25 23:45:32,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18876 states, 18875 states have (on average 4.233377483443709) internal successors, (79905), 18875 states have internal predecessors, (79905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:32,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18876 states to 18876 states and 79905 transitions. [2022-11-25 23:45:32,242 INFO L78 Accepts]: Start accepts. Automaton has 18876 states and 79905 transitions. Word has length 63 [2022-11-25 23:45:32,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:45:32,244 INFO L495 AbstractCegarLoop]: Abstraction has 18876 states and 79905 transitions. [2022-11-25 23:45:32,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:32,244 INFO L276 IsEmpty]: Start isEmpty. Operand 18876 states and 79905 transitions. [2022-11-25 23:45:32,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:45:32,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:45:32,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:45:32,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:45:32,311 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 23:45:32,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:45:32,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1621382643, now seen corresponding path program 3 times [2022-11-25 23:45:32,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:45:32,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148932153] [2022-11-25 23:45:32,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:32,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:45:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:34,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:45:34,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:45:34,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148932153] [2022-11-25 23:45:34,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148932153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:45:34,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:45:34,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-25 23:45:34,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714999683] [2022-11-25 23:45:34,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:45:34,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-25 23:45:34,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:45:34,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-25 23:45:34,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2022-11-25 23:45:34,440 INFO L87 Difference]: Start difference. First operand 18876 states and 79905 transitions. Second operand has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:41,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:45:41,354 INFO L93 Difference]: Finished difference Result 28154 states and 114858 transitions. [2022-11-25 23:45:41,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-25 23:45:41,355 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-25 23:45:41,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:45:41,637 INFO L225 Difference]: With dead ends: 28154 [2022-11-25 23:45:41,637 INFO L226 Difference]: Without dead ends: 27292 [2022-11-25 23:45:41,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=294, Invalid=2676, Unknown=0, NotChecked=0, Total=2970 [2022-11-25 23:45:41,641 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 1137 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 7815 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 2507 SdHoareTripleChecker+Invalid, 7844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 7815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:45:41,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1137 Valid, 2507 Invalid, 7844 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 7815 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-25 23:45:41,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27292 states. [2022-11-25 23:45:42,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27292 to 19986. [2022-11-25 23:45:42,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19986 states, 19985 states have (on average 4.198749061796347) internal successors, (83912), 19985 states have internal predecessors, (83912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:42,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19986 states to 19986 states and 83912 transitions. [2022-11-25 23:45:42,759 INFO L78 Accepts]: Start accepts. Automaton has 19986 states and 83912 transitions. Word has length 63 [2022-11-25 23:45:42,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:45:42,763 INFO L495 AbstractCegarLoop]: Abstraction has 19986 states and 83912 transitions. [2022-11-25 23:45:42,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:42,764 INFO L276 IsEmpty]: Start isEmpty. Operand 19986 states and 83912 transitions. [2022-11-25 23:45:42,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:45:42,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:45:42,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:45:42,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 23:45:42,814 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 23:45:42,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:45:42,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1944353091, now seen corresponding path program 4 times [2022-11-25 23:45:42,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:45:42,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343249076] [2022-11-25 23:45:42,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:42,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:45:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:43,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:45:43,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:45:43,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343249076] [2022-11-25 23:45:43,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343249076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:45:43,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:45:43,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-25 23:45:43,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499473595] [2022-11-25 23:45:43,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:45:43,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 23:45:43,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:45:43,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 23:45:43,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2022-11-25 23:45:43,983 INFO L87 Difference]: Start difference. First operand 19986 states and 83912 transitions. Second operand has 16 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:48,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:45:48,402 INFO L93 Difference]: Finished difference Result 23851 states and 98350 transitions. [2022-11-25 23:45:48,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-25 23:45:48,403 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-25 23:45:48,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:45:48,524 INFO L225 Difference]: With dead ends: 23851 [2022-11-25 23:45:48,524 INFO L226 Difference]: Without dead ends: 23410 [2022-11-25 23:45:48,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=196, Invalid=1874, Unknown=0, NotChecked=0, Total=2070 [2022-11-25 23:45:48,526 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 836 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 5640 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 5648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 5640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:45:48,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 1744 Invalid, 5648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 5640 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-25 23:45:48,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23410 states. [2022-11-25 23:45:49,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23410 to 19946. [2022-11-25 23:45:49,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19946 states, 19945 states have (on average 4.197041865129105) internal successors, (83710), 19945 states have internal predecessors, (83710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:49,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19946 states to 19946 states and 83710 transitions. [2022-11-25 23:45:49,409 INFO L78 Accepts]: Start accepts. Automaton has 19946 states and 83710 transitions. Word has length 63 [2022-11-25 23:45:49,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:45:49,410 INFO L495 AbstractCegarLoop]: Abstraction has 19946 states and 83710 transitions. [2022-11-25 23:45:49,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:49,410 INFO L276 IsEmpty]: Start isEmpty. Operand 19946 states and 83710 transitions. [2022-11-25 23:45:49,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:45:49,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:45:49,469 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:45:49,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 23:45:49,470 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 23:45:49,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:45:49,471 INFO L85 PathProgramCache]: Analyzing trace with hash 986315575, now seen corresponding path program 5 times [2022-11-25 23:45:49,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:45:49,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745667455] [2022-11-25 23:45:49,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:49,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:45:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:45:51,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:45:51,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:45:51,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745667455] [2022-11-25 23:45:51,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745667455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:45:51,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:45:51,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-25 23:45:51,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472196696] [2022-11-25 23:45:51,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:45:51,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-25 23:45:51,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:45:51,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-25 23:45:51,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2022-11-25 23:45:51,246 INFO L87 Difference]: Start difference. First operand 19946 states and 83710 transitions. Second operand has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:58,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:45:58,071 INFO L93 Difference]: Finished difference Result 26059 states and 107383 transitions. [2022-11-25 23:45:58,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-25 23:45:58,071 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-25 23:45:58,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:45:58,152 INFO L225 Difference]: With dead ends: 26059 [2022-11-25 23:45:58,152 INFO L226 Difference]: Without dead ends: 25798 [2022-11-25 23:45:58,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=221, Invalid=1941, Unknown=0, NotChecked=0, Total=2162 [2022-11-25 23:45:58,154 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 885 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 7727 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 2608 SdHoareTripleChecker+Invalid, 7746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 7727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:45:58,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [885 Valid, 2608 Invalid, 7746 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 7727 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-25 23:45:58,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25798 states. [2022-11-25 23:45:58,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25798 to 20026. [2022-11-25 23:45:58,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20026 states, 20025 states have (on average 4.1924594257178525) internal successors, (83954), 20025 states have internal predecessors, (83954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:58,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20026 states to 20026 states and 83954 transitions. [2022-11-25 23:45:58,932 INFO L78 Accepts]: Start accepts. Automaton has 20026 states and 83954 transitions. Word has length 63 [2022-11-25 23:45:58,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:45:58,933 INFO L495 AbstractCegarLoop]: Abstraction has 20026 states and 83954 transitions. [2022-11-25 23:45:58,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:45:58,933 INFO L276 IsEmpty]: Start isEmpty. Operand 20026 states and 83954 transitions. [2022-11-25 23:45:58,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:45:58,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:45:58,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:45:58,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 23:45:58,991 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 23:45:58,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:45:58,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1269006953, now seen corresponding path program 6 times [2022-11-25 23:45:58,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:45:58,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493966750] [2022-11-25 23:45:58,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:45:58,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:45:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:00,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:46:00,321 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:00,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493966750] [2022-11-25 23:46:00,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493966750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:00,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:46:00,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-25 23:46:00,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085618500] [2022-11-25 23:46:00,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:00,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-25 23:46:00,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:00,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-25 23:46:00,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2022-11-25 23:46:00,323 INFO L87 Difference]: Start difference. First operand 20026 states and 83954 transitions. Second operand has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:04,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:04,151 INFO L93 Difference]: Finished difference Result 22687 states and 94083 transitions. [2022-11-25 23:46:04,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-25 23:46:04,151 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-25 23:46:04,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:04,217 INFO L225 Difference]: With dead ends: 22687 [2022-11-25 23:46:04,217 INFO L226 Difference]: Without dead ends: 22466 [2022-11-25 23:46:04,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=175, Invalid=1631, Unknown=0, NotChecked=0, Total=1806 [2022-11-25 23:46:04,218 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 782 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 5345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 5346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:04,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 1804 Invalid, 5346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5345 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-25 23:46:04,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22466 states. [2022-11-25 23:46:04,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22466 to 20146. [2022-11-25 23:46:04,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20146 states, 20145 states have (on average 4.189625217175478) internal successors, (84400), 20145 states have internal predecessors, (84400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:04,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20146 states to 20146 states and 84400 transitions. [2022-11-25 23:46:04,932 INFO L78 Accepts]: Start accepts. Automaton has 20146 states and 84400 transitions. Word has length 63 [2022-11-25 23:46:04,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:04,933 INFO L495 AbstractCegarLoop]: Abstraction has 20146 states and 84400 transitions. [2022-11-25 23:46:04,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:04,933 INFO L276 IsEmpty]: Start isEmpty. Operand 20146 states and 84400 transitions. [2022-11-25 23:46:04,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:46:04,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:04,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:46:04,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 23:46:04,996 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 23:46:04,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:04,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1591977401, now seen corresponding path program 7 times [2022-11-25 23:46:04,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:04,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380293776] [2022-11-25 23:46:04,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:04,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:06,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:46:06,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:06,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380293776] [2022-11-25 23:46:06,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380293776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:06,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:46:06,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-25 23:46:06,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163995199] [2022-11-25 23:46:06,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:06,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 23:46:06,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:06,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 23:46:06,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2022-11-25 23:46:06,109 INFO L87 Difference]: Start difference. First operand 20146 states and 84400 transitions. Second operand has 16 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:10,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:10,229 INFO L93 Difference]: Finished difference Result 22633 states and 94126 transitions. [2022-11-25 23:46:10,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-25 23:46:10,229 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-25 23:46:10,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:10,295 INFO L225 Difference]: With dead ends: 22633 [2022-11-25 23:46:10,295 INFO L226 Difference]: Without dead ends: 22192 [2022-11-25 23:46:10,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=206, Invalid=1956, Unknown=0, NotChecked=0, Total=2162 [2022-11-25 23:46:10,297 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 844 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 5133 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 5142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 5133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:10,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 1626 Invalid, 5142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 5133 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-25 23:46:10,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22192 states. [2022-11-25 23:46:10,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22192 to 20042. [2022-11-25 23:46:10,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20042 states, 20041 states have (on average 4.196297589940622) internal successors, (84098), 20041 states have internal predecessors, (84098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:10,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20042 states to 20042 states and 84098 transitions. [2022-11-25 23:46:10,975 INFO L78 Accepts]: Start accepts. Automaton has 20042 states and 84098 transitions. Word has length 63 [2022-11-25 23:46:10,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:10,976 INFO L495 AbstractCegarLoop]: Abstraction has 20042 states and 84098 transitions. [2022-11-25 23:46:10,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:10,976 INFO L276 IsEmpty]: Start isEmpty. Operand 20042 states and 84098 transitions. [2022-11-25 23:46:11,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:46:11,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:11,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:46:11,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 23:46:11,036 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 23:46:11,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:11,037 INFO L85 PathProgramCache]: Analyzing trace with hash 934301285, now seen corresponding path program 8 times [2022-11-25 23:46:11,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:11,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794555358] [2022-11-25 23:46:11,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:11,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:46:12,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:12,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794555358] [2022-11-25 23:46:12,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794555358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:12,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:46:12,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-25 23:46:12,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736909650] [2022-11-25 23:46:12,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:12,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-25 23:46:12,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:12,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-25 23:46:12,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2022-11-25 23:46:12,366 INFO L87 Difference]: Start difference. First operand 20042 states and 84098 transitions. Second operand has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:17,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:17,101 INFO L93 Difference]: Finished difference Result 26001 states and 107437 transitions. [2022-11-25 23:46:17,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-25 23:46:17,103 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-25 23:46:17,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:17,214 INFO L225 Difference]: With dead ends: 26001 [2022-11-25 23:46:17,214 INFO L226 Difference]: Without dead ends: 25620 [2022-11-25 23:46:17,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=208, Invalid=2048, Unknown=0, NotChecked=0, Total=2256 [2022-11-25 23:46:17,216 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 939 mSDsluCounter, 2259 mSDsCounter, 0 mSdLazyCounter, 6918 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 2421 SdHoareTripleChecker+Invalid, 6925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 6918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:17,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 2421 Invalid, 6925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 6918 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-25 23:46:17,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25620 states. [2022-11-25 23:46:17,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25620 to 21206. [2022-11-25 23:46:17,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21206 states, 21205 states have (on average 4.170337184626267) internal successors, (88432), 21205 states have internal predecessors, (88432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:17,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21206 states to 21206 states and 88432 transitions. [2022-11-25 23:46:17,847 INFO L78 Accepts]: Start accepts. Automaton has 21206 states and 88432 transitions. Word has length 63 [2022-11-25 23:46:17,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:17,848 INFO L495 AbstractCegarLoop]: Abstraction has 21206 states and 88432 transitions. [2022-11-25 23:46:17,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:17,848 INFO L276 IsEmpty]: Start isEmpty. Operand 21206 states and 88432 transitions. [2022-11-25 23:46:17,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:46:17,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:17,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:46:17,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 23:46:17,895 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 23:46:17,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:17,895 INFO L85 PathProgramCache]: Analyzing trace with hash -683798557, now seen corresponding path program 9 times [2022-11-25 23:46:17,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:17,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668124922] [2022-11-25 23:46:17,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:17,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:18,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:46:18,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:18,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668124922] [2022-11-25 23:46:18,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668124922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:18,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:46:18,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-25 23:46:18,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855047228] [2022-11-25 23:46:18,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:18,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 23:46:18,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:18,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 23:46:18,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2022-11-25 23:46:18,982 INFO L87 Difference]: Start difference. First operand 21206 states and 88432 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:23,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:23,348 INFO L93 Difference]: Finished difference Result 25767 states and 106956 transitions. [2022-11-25 23:46:23,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-25 23:46:23,348 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-25 23:46:23,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:23,429 INFO L225 Difference]: With dead ends: 25767 [2022-11-25 23:46:23,429 INFO L226 Difference]: Without dead ends: 25466 [2022-11-25 23:46:23,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=211, Invalid=1951, Unknown=0, NotChecked=0, Total=2162 [2022-11-25 23:46:23,431 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 852 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 6083 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 2118 SdHoareTripleChecker+Invalid, 6094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 6083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:23,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 2118 Invalid, 6094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 6083 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-25 23:46:23,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25466 states. [2022-11-25 23:46:23,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25466 to 21206. [2022-11-25 23:46:23,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21206 states, 21205 states have (on average 4.16845083706673) internal successors, (88392), 21205 states have internal predecessors, (88392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:24,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21206 states to 21206 states and 88392 transitions. [2022-11-25 23:46:24,042 INFO L78 Accepts]: Start accepts. Automaton has 21206 states and 88392 transitions. Word has length 63 [2022-11-25 23:46:24,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:24,042 INFO L495 AbstractCegarLoop]: Abstraction has 21206 states and 88392 transitions. [2022-11-25 23:46:24,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:24,042 INFO L276 IsEmpty]: Start isEmpty. Operand 21206 states and 88392 transitions. [2022-11-25 23:46:24,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:46:24,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:24,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:46:24,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 23:46:24,083 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 23:46:24,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:24,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1355846211, now seen corresponding path program 10 times [2022-11-25 23:46:24,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:24,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612026258] [2022-11-25 23:46:24,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:24,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:25,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:46:25,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:25,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612026258] [2022-11-25 23:46:25,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612026258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:25,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:46:25,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-25 23:46:25,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117389036] [2022-11-25 23:46:25,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:25,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-25 23:46:25,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:25,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 23:46:25,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2022-11-25 23:46:25,546 INFO L87 Difference]: Start difference. First operand 21206 states and 88392 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:34,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:34,872 INFO L93 Difference]: Finished difference Result 36307 states and 152794 transitions. [2022-11-25 23:46:34,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-11-25 23:46:34,873 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-25 23:46:34,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:34,989 INFO L225 Difference]: With dead ends: 36307 [2022-11-25 23:46:34,989 INFO L226 Difference]: Without dead ends: 35966 [2022-11-25 23:46:34,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2167 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=608, Invalid=6532, Unknown=0, NotChecked=0, Total=7140 [2022-11-25 23:46:34,990 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1546 mSDsluCounter, 2827 mSDsCounter, 0 mSdLazyCounter, 9917 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 9993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 9917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:34,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 3001 Invalid, 9993 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 9917 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-25 23:46:35,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35966 states. [2022-11-25 23:46:35,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35966 to 21414. [2022-11-25 23:46:35,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21414 states, 21413 states have (on average 4.1676551627516) internal successors, (89242), 21413 states have internal predecessors, (89242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:35,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21414 states to 21414 states and 89242 transitions. [2022-11-25 23:46:35,628 INFO L78 Accepts]: Start accepts. Automaton has 21414 states and 89242 transitions. Word has length 63 [2022-11-25 23:46:35,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:35,628 INFO L495 AbstractCegarLoop]: Abstraction has 21414 states and 89242 transitions. [2022-11-25 23:46:35,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:35,628 INFO L276 IsEmpty]: Start isEmpty. Operand 21414 states and 89242 transitions. [2022-11-25 23:46:35,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:46:35,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:35,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:46:35,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 23:46:35,671 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 23:46:35,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:35,671 INFO L85 PathProgramCache]: Analyzing trace with hash 2096797197, now seen corresponding path program 11 times [2022-11-25 23:46:35,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:35,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116316476] [2022-11-25 23:46:35,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:35,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:36,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:46:36,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:36,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116316476] [2022-11-25 23:46:36,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116316476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:36,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:46:36,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-25 23:46:36,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641040392] [2022-11-25 23:46:36,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:36,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 23:46:36,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:36,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 23:46:36,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2022-11-25 23:46:36,538 INFO L87 Difference]: Start difference. First operand 21414 states and 89242 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:42,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:42,969 INFO L93 Difference]: Finished difference Result 29187 states and 120502 transitions. [2022-11-25 23:46:42,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-25 23:46:42,970 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-25 23:46:42,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:43,131 INFO L225 Difference]: With dead ends: 29187 [2022-11-25 23:46:43,131 INFO L226 Difference]: Without dead ends: 28606 [2022-11-25 23:46:43,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=303, Invalid=3237, Unknown=0, NotChecked=0, Total=3540 [2022-11-25 23:46:43,134 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 971 mSDsluCounter, 2481 mSDsCounter, 0 mSdLazyCounter, 8221 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 2676 SdHoareTripleChecker+Invalid, 8239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 8221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:43,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 2676 Invalid, 8239 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 8221 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-25 23:46:43,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28606 states. [2022-11-25 23:46:43,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28606 to 22642. [2022-11-25 23:46:43,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22642 states, 22641 states have (on average 4.141424848725763) internal successors, (93766), 22641 states have internal predecessors, (93766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:44,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22642 states to 22642 states and 93766 transitions. [2022-11-25 23:46:44,017 INFO L78 Accepts]: Start accepts. Automaton has 22642 states and 93766 transitions. Word has length 63 [2022-11-25 23:46:44,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:44,017 INFO L495 AbstractCegarLoop]: Abstraction has 22642 states and 93766 transitions. [2022-11-25 23:46:44,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:44,018 INFO L276 IsEmpty]: Start isEmpty. Operand 22642 states and 93766 transitions. [2022-11-25 23:46:44,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:46:44,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:44,069 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:46:44,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 23:46:44,070 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 23:46:44,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:44,070 INFO L85 PathProgramCache]: Analyzing trace with hash -922253619, now seen corresponding path program 12 times [2022-11-25 23:46:44,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:44,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527642940] [2022-11-25 23:46:44,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:44,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:44,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:46:44,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:44,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527642940] [2022-11-25 23:46:44,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527642940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:44,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:46:44,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-25 23:46:44,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451675190] [2022-11-25 23:46:44,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:44,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 23:46:44,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:44,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 23:46:44,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-11-25 23:46:44,910 INFO L87 Difference]: Start difference. First operand 22642 states and 93766 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:51,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:51,314 INFO L93 Difference]: Finished difference Result 29261 states and 120421 transitions. [2022-11-25 23:46:51,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-25 23:46:51,315 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-25 23:46:51,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:51,435 INFO L225 Difference]: With dead ends: 29261 [2022-11-25 23:46:51,435 INFO L226 Difference]: Without dead ends: 28440 [2022-11-25 23:46:51,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=305, Invalid=3355, Unknown=0, NotChecked=0, Total=3660 [2022-11-25 23:46:51,437 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 982 mSDsluCounter, 2694 mSDsCounter, 0 mSdLazyCounter, 8735 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 2889 SdHoareTripleChecker+Invalid, 8756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 8735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:51,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 2889 Invalid, 8756 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 8735 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-25 23:46:51,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28440 states. [2022-11-25 23:46:52,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28440 to 20110. [2022-11-25 23:46:52,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20110 states, 20109 states have (on average 4.199811029887115) internal successors, (84454), 20109 states have internal predecessors, (84454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:52,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20110 states to 20110 states and 84454 transitions. [2022-11-25 23:46:52,611 INFO L78 Accepts]: Start accepts. Automaton has 20110 states and 84454 transitions. Word has length 63 [2022-11-25 23:46:52,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:52,611 INFO L495 AbstractCegarLoop]: Abstraction has 20110 states and 84454 transitions. [2022-11-25 23:46:52,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:52,612 INFO L276 IsEmpty]: Start isEmpty. Operand 20110 states and 84454 transitions. [2022-11-25 23:46:52,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:46:52,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:52,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:46:52,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 23:46:52,655 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 23:46:52,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:52,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1046281231, now seen corresponding path program 13 times [2022-11-25 23:46:52,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:52,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559494776] [2022-11-25 23:46:52,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:52,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:53,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:46:53,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:53,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559494776] [2022-11-25 23:46:53,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559494776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:53,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:46:53,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-25 23:46:53,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711637457] [2022-11-25 23:46:53,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:53,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 23:46:53,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:53,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 23:46:53,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2022-11-25 23:46:53,439 INFO L87 Difference]: Start difference. First operand 20110 states and 84454 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:58,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:58,997 INFO L93 Difference]: Finished difference Result 24543 states and 103611 transitions. [2022-11-25 23:46:58,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-25 23:46:58,998 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-25 23:46:58,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:59,099 INFO L225 Difference]: With dead ends: 24543 [2022-11-25 23:46:59,099 INFO L226 Difference]: Without dead ends: 24162 [2022-11-25 23:46:59,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=263, Invalid=2707, Unknown=0, NotChecked=0, Total=2970 [2022-11-25 23:46:59,100 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 898 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 7163 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 2331 SdHoareTripleChecker+Invalid, 7179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 7163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:59,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 2331 Invalid, 7179 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 7163 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-25 23:46:59,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24162 states. [2022-11-25 23:46:59,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24162 to 20130. [2022-11-25 23:46:59,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20130 states, 20129 states have (on average 4.198618908043122) internal successors, (84514), 20129 states have internal predecessors, (84514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:59,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20130 states to 20130 states and 84514 transitions. [2022-11-25 23:46:59,793 INFO L78 Accepts]: Start accepts. Automaton has 20130 states and 84514 transitions. Word has length 63 [2022-11-25 23:46:59,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:59,794 INFO L495 AbstractCegarLoop]: Abstraction has 20130 states and 84514 transitions. [2022-11-25 23:46:59,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:46:59,794 INFO L276 IsEmpty]: Start isEmpty. Operand 20130 states and 84514 transitions. [2022-11-25 23:46:59,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:46:59,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:59,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:46:59,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 23:46:59,836 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 23:46:59,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:59,836 INFO L85 PathProgramCache]: Analyzing trace with hash 289927381, now seen corresponding path program 14 times [2022-11-25 23:46:59,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:59,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437726829] [2022-11-25 23:46:59,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:59,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:00,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:00,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:00,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437726829] [2022-11-25 23:47:00,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437726829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:00,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:47:00,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-25 23:47:00,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105407350] [2022-11-25 23:47:00,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:00,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 23:47:00,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:00,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 23:47:00,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-11-25 23:47:00,862 INFO L87 Difference]: Start difference. First operand 20130 states and 84514 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:06,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:06,646 INFO L93 Difference]: Finished difference Result 24661 states and 103829 transitions. [2022-11-25 23:47:06,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-25 23:47:06,646 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-25 23:47:06,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:06,727 INFO L225 Difference]: With dead ends: 24661 [2022-11-25 23:47:06,727 INFO L226 Difference]: Without dead ends: 24380 [2022-11-25 23:47:06,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=285, Invalid=3137, Unknown=0, NotChecked=0, Total=3422 [2022-11-25 23:47:06,729 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 995 mSDsluCounter, 2353 mSDsCounter, 0 mSdLazyCounter, 7789 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 7809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 7789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:06,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 2523 Invalid, 7809 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 7789 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-25 23:47:06,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24380 states. [2022-11-25 23:47:07,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24380 to 20158. [2022-11-25 23:47:07,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20158 states, 20157 states have (on average 4.197549238477948) internal successors, (84610), 20157 states have internal predecessors, (84610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:07,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20158 states to 20158 states and 84610 transitions. [2022-11-25 23:47:07,377 INFO L78 Accepts]: Start accepts. Automaton has 20158 states and 84610 transitions. Word has length 63 [2022-11-25 23:47:07,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:07,377 INFO L495 AbstractCegarLoop]: Abstraction has 20158 states and 84610 transitions. [2022-11-25 23:47:07,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:07,377 INFO L276 IsEmpty]: Start isEmpty. Operand 20158 states and 84610 transitions. [2022-11-25 23:47:07,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:47:07,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:07,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:47:07,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 23:47:07,418 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 23:47:07,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:07,419 INFO L85 PathProgramCache]: Analyzing trace with hash -277668397, now seen corresponding path program 15 times [2022-11-25 23:47:07,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:07,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038693697] [2022-11-25 23:47:07,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:07,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:08,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:08,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:08,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038693697] [2022-11-25 23:47:08,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038693697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:08,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:47:08,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-25 23:47:08,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375898537] [2022-11-25 23:47:08,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:08,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 23:47:08,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:08,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 23:47:08,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-11-25 23:47:08,614 INFO L87 Difference]: Start difference. First operand 20158 states and 84610 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:13,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:13,824 INFO L93 Difference]: Finished difference Result 24343 states and 102855 transitions. [2022-11-25 23:47:13,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-25 23:47:13,825 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-25 23:47:13,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:13,901 INFO L225 Difference]: With dead ends: 24343 [2022-11-25 23:47:13,901 INFO L226 Difference]: Without dead ends: 24086 [2022-11-25 23:47:13,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=238, Invalid=2518, Unknown=0, NotChecked=0, Total=2756 [2022-11-25 23:47:13,902 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 874 mSDsluCounter, 2294 mSDsCounter, 0 mSdLazyCounter, 7260 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 2460 SdHoareTripleChecker+Invalid, 7276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 7260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:13,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 2460 Invalid, 7276 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 7260 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-25 23:47:13,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24086 states. [2022-11-25 23:47:14,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24086 to 20138. [2022-11-25 23:47:14,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20138 states, 20137 states have (on average 4.198341361672543) internal successors, (84542), 20137 states have internal predecessors, (84542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:14,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20138 states to 20138 states and 84542 transitions. [2022-11-25 23:47:14,529 INFO L78 Accepts]: Start accepts. Automaton has 20138 states and 84542 transitions. Word has length 63 [2022-11-25 23:47:14,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:14,530 INFO L495 AbstractCegarLoop]: Abstraction has 20138 states and 84542 transitions. [2022-11-25 23:47:14,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:14,530 INFO L276 IsEmpty]: Start isEmpty. Operand 20138 states and 84542 transitions. [2022-11-25 23:47:14,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:47:14,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:14,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:47:14,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 23:47:14,575 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 23:47:14,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:14,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1516231995, now seen corresponding path program 16 times [2022-11-25 23:47:14,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:14,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911756947] [2022-11-25 23:47:14,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:14,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:15,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:15,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:15,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911756947] [2022-11-25 23:47:15,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911756947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:15,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:47:15,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-25 23:47:15,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838583595] [2022-11-25 23:47:15,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:15,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 23:47:15,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:15,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 23:47:15,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-11-25 23:47:15,365 INFO L87 Difference]: Start difference. First operand 20138 states and 84542 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:20,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:20,897 INFO L93 Difference]: Finished difference Result 24701 states and 103971 transitions. [2022-11-25 23:47:20,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-25 23:47:20,897 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-25 23:47:20,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:20,978 INFO L225 Difference]: With dead ends: 24701 [2022-11-25 23:47:20,978 INFO L226 Difference]: Without dead ends: 24340 [2022-11-25 23:47:20,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=276, Invalid=2916, Unknown=0, NotChecked=0, Total=3192 [2022-11-25 23:47:20,979 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 1015 mSDsluCounter, 2285 mSDsCounter, 0 mSdLazyCounter, 7327 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 2450 SdHoareTripleChecker+Invalid, 7347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 7327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:20,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 2450 Invalid, 7347 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 7327 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-25 23:47:21,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24340 states. [2022-11-25 23:47:21,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24340 to 20154. [2022-11-25 23:47:21,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20154 states, 20153 states have (on average 4.197389966754329) internal successors, (84590), 20153 states have internal predecessors, (84590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:21,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20154 states to 20154 states and 84590 transitions. [2022-11-25 23:47:21,655 INFO L78 Accepts]: Start accepts. Automaton has 20154 states and 84590 transitions. Word has length 63 [2022-11-25 23:47:21,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:21,656 INFO L495 AbstractCegarLoop]: Abstraction has 20154 states and 84590 transitions. [2022-11-25 23:47:21,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:21,656 INFO L276 IsEmpty]: Start isEmpty. Operand 20154 states and 84590 transitions. [2022-11-25 23:47:21,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:47:21,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:21,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:47:21,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 23:47:21,700 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 23:47:21,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:21,701 INFO L85 PathProgramCache]: Analyzing trace with hash 934909825, now seen corresponding path program 17 times [2022-11-25 23:47:21,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:21,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770707353] [2022-11-25 23:47:21,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:21,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:22,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:22,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:22,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770707353] [2022-11-25 23:47:22,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770707353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:22,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:47:22,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-25 23:47:22,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440182147] [2022-11-25 23:47:22,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:22,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 23:47:22,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:22,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 23:47:22,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-11-25 23:47:22,526 INFO L87 Difference]: Start difference. First operand 20154 states and 84590 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:28,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:28,216 INFO L93 Difference]: Finished difference Result 24957 states and 105460 transitions. [2022-11-25 23:47:28,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-25 23:47:28,216 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-25 23:47:28,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:28,298 INFO L225 Difference]: With dead ends: 24957 [2022-11-25 23:47:28,298 INFO L226 Difference]: Without dead ends: 24732 [2022-11-25 23:47:28,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=271, Invalid=2921, Unknown=0, NotChecked=0, Total=3192 [2022-11-25 23:47:28,301 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 989 mSDsluCounter, 2335 mSDsCounter, 0 mSdLazyCounter, 7442 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 7462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 7442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:28,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 2503 Invalid, 7462 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 7442 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-25 23:47:28,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24732 states. [2022-11-25 23:47:28,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24732 to 20146. [2022-11-25 23:47:28,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20146 states, 20145 states have (on average 4.197666914867213) internal successors, (84562), 20145 states have internal predecessors, (84562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:28,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20146 states to 20146 states and 84562 transitions. [2022-11-25 23:47:28,987 INFO L78 Accepts]: Start accepts. Automaton has 20146 states and 84562 transitions. Word has length 63 [2022-11-25 23:47:28,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:28,987 INFO L495 AbstractCegarLoop]: Abstraction has 20146 states and 84562 transitions. [2022-11-25 23:47:28,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:28,987 INFO L276 IsEmpty]: Start isEmpty. Operand 20146 states and 84562 transitions. [2022-11-25 23:47:29,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:47:29,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:29,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:47:29,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 23:47:29,027 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 23:47:29,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:29,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1183977835, now seen corresponding path program 18 times [2022-11-25 23:47:29,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:29,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811694288] [2022-11-25 23:47:29,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:29,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:29,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:29,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:29,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811694288] [2022-11-25 23:47:29,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811694288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:29,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:47:29,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-25 23:47:29,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814673308] [2022-11-25 23:47:29,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:29,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 23:47:29,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:29,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 23:47:29,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-11-25 23:47:29,896 INFO L87 Difference]: Start difference. First operand 20146 states and 84562 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:35,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:35,291 INFO L93 Difference]: Finished difference Result 24331 states and 102807 transitions. [2022-11-25 23:47:35,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-25 23:47:35,292 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-25 23:47:35,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:35,371 INFO L225 Difference]: With dead ends: 24331 [2022-11-25 23:47:35,372 INFO L226 Difference]: Without dead ends: 24078 [2022-11-25 23:47:35,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=245, Invalid=2511, Unknown=0, NotChecked=0, Total=2756 [2022-11-25 23:47:35,373 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 895 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 7151 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 7167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 7151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:35,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 2430 Invalid, 7167 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 7151 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-25 23:47:35,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24078 states. [2022-11-25 23:47:35,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24078 to 20130. [2022-11-25 23:47:35,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20130 states, 20129 states have (on average 4.198221471508768) internal successors, (84506), 20129 states have internal predecessors, (84506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:36,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20130 states to 20130 states and 84506 transitions. [2022-11-25 23:47:36,132 INFO L78 Accepts]: Start accepts. Automaton has 20130 states and 84506 transitions. Word has length 63 [2022-11-25 23:47:36,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:36,132 INFO L495 AbstractCegarLoop]: Abstraction has 20130 states and 84506 transitions. [2022-11-25 23:47:36,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:36,133 INFO L276 IsEmpty]: Start isEmpty. Operand 20130 states and 84506 transitions. [2022-11-25 23:47:36,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:47:36,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:36,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:47:36,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 23:47:36,186 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 23:47:36,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:36,187 INFO L85 PathProgramCache]: Analyzing trace with hash 496074135, now seen corresponding path program 19 times [2022-11-25 23:47:36,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:36,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129366478] [2022-11-25 23:47:36,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:36,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:37,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:37,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:37,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129366478] [2022-11-25 23:47:37,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129366478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:37,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:47:37,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-25 23:47:37,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319435924] [2022-11-25 23:47:37,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:37,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-25 23:47:37,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:37,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-25 23:47:37,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2022-11-25 23:47:37,405 INFO L87 Difference]: Start difference. First operand 20130 states and 84506 transitions. Second operand has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:44,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:44,668 INFO L93 Difference]: Finished difference Result 29147 states and 118240 transitions. [2022-11-25 23:47:44,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-25 23:47:44,669 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-25 23:47:44,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:44,761 INFO L225 Difference]: With dead ends: 29147 [2022-11-25 23:47:44,761 INFO L226 Difference]: Without dead ends: 28846 [2022-11-25 23:47:44,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=317, Invalid=3105, Unknown=0, NotChecked=0, Total=3422 [2022-11-25 23:47:44,762 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 1143 mSDsluCounter, 2613 mSDsCounter, 0 mSdLazyCounter, 8434 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 8457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 8434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:44,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1143 Valid, 2770 Invalid, 8457 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 8434 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-25 23:47:44,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28846 states. [2022-11-25 23:47:45,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28846 to 20366. [2022-11-25 23:47:45,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20366 states, 20365 states have (on average 4.1928799410753745) internal successors, (85388), 20365 states have internal predecessors, (85388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:45,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20366 states to 20366 states and 85388 transitions. [2022-11-25 23:47:45,462 INFO L78 Accepts]: Start accepts. Automaton has 20366 states and 85388 transitions. Word has length 63 [2022-11-25 23:47:45,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:45,462 INFO L495 AbstractCegarLoop]: Abstraction has 20366 states and 85388 transitions. [2022-11-25 23:47:45,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:45,462 INFO L276 IsEmpty]: Start isEmpty. Operand 20366 states and 85388 transitions. [2022-11-25 23:47:45,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:47:45,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:45,512 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:47:45,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 23:47:45,512 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 23:47:45,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:45,513 INFO L85 PathProgramCache]: Analyzing trace with hash 437332023, now seen corresponding path program 20 times [2022-11-25 23:47:45,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:45,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194426483] [2022-11-25 23:47:45,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:45,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:46,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:46,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:46,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194426483] [2022-11-25 23:47:46,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194426483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:46,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:47:46,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-25 23:47:46,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379387741] [2022-11-25 23:47:46,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:46,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-25 23:47:46,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:46,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-25 23:47:46,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2022-11-25 23:47:46,588 INFO L87 Difference]: Start difference. First operand 20366 states and 85388 transitions. Second operand has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:51,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:51,196 INFO L93 Difference]: Finished difference Result 24815 states and 102894 transitions. [2022-11-25 23:47:51,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-25 23:47:51,197 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-25 23:47:51,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:51,280 INFO L225 Difference]: With dead ends: 24815 [2022-11-25 23:47:51,280 INFO L226 Difference]: Without dead ends: 24594 [2022-11-25 23:47:51,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=218, Invalid=2232, Unknown=0, NotChecked=0, Total=2450 [2022-11-25 23:47:51,282 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 940 mSDsluCounter, 2152 mSDsCounter, 0 mSdLazyCounter, 6471 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 2306 SdHoareTripleChecker+Invalid, 6479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 6471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:51,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [940 Valid, 2306 Invalid, 6479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 6471 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-25 23:47:51,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24594 states. [2022-11-25 23:47:51,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24594 to 20390. [2022-11-25 23:47:51,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20390 states, 20389 states have (on average 4.191279611555251) internal successors, (85456), 20389 states have internal predecessors, (85456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:51,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20390 states to 20390 states and 85456 transitions. [2022-11-25 23:47:51,907 INFO L78 Accepts]: Start accepts. Automaton has 20390 states and 85456 transitions. Word has length 63 [2022-11-25 23:47:51,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:51,908 INFO L495 AbstractCegarLoop]: Abstraction has 20390 states and 85456 transitions. [2022-11-25 23:47:51,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:51,908 INFO L276 IsEmpty]: Start isEmpty. Operand 20390 states and 85456 transitions. [2022-11-25 23:47:51,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:47:51,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:51,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:47:51,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-25 23:47:51,955 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 23:47:51,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:51,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1413743573, now seen corresponding path program 21 times [2022-11-25 23:47:51,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:51,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9536797] [2022-11-25 23:47:51,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:51,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:52,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:52,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:52,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9536797] [2022-11-25 23:47:52,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9536797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:52,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:47:52,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-25 23:47:52,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160018257] [2022-11-25 23:47:52,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:52,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 23:47:52,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:52,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 23:47:52,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-11-25 23:47:52,753 INFO L87 Difference]: Start difference. First operand 20390 states and 85456 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)