./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix015.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707dadee-6ebc-4480-8ad3-18df2cb56dcb/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707dadee-6ebc-4480-8ad3-18df2cb56dcb/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707dadee-6ebc-4480-8ad3-18df2cb56dcb/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707dadee-6ebc-4480-8ad3-18df2cb56dcb/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix015.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707dadee-6ebc-4480-8ad3-18df2cb56dcb/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707dadee-6ebc-4480-8ad3-18df2cb56dcb/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 951d1f5e5395236f7d0da1ed6dd6f4a1398d1a8ad75d935345731aeb4389e0e8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 06:00:24,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:00:24,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:00:24,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:00:24,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:00:24,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:00:24,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:00:24,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:00:24,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:00:24,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:00:24,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:00:24,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:00:24,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:00:24,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:00:24,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:00:24,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:00:24,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:00:24,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:00:24,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:00:24,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:00:24,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:00:24,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:00:24,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:00:24,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:00:24,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:00:24,372 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:00:24,372 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:00:24,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:00:24,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:00:24,374 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:00:24,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:00:24,375 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:00:24,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:00:24,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:00:24,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:00:24,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:00:24,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:00:24,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:00:24,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:00:24,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:00:24,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:00:24,379 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707dadee-6ebc-4480-8ad3-18df2cb56dcb/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 06:00:24,394 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:00:24,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:00:24,394 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:00:24,394 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:00:24,395 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:00:24,395 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:00:24,395 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:00:24,395 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:00:24,395 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:00:24,395 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:00:24,395 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:00:24,396 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:00:24,396 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:00:24,396 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:00:24,396 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:00:24,396 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:00:24,396 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:00:24,396 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:00:24,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:00:24,397 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 06:00:24,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:00:24,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 06:00:24,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:00:24,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:00:24,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:00:24,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:00:24,398 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 06:00:24,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:00:24,398 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:00:24,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:00:24,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:00:24,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:00:24,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:00:24,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:00:24,399 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:00:24,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:00:24,399 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:00:24,399 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:00:24,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:00:24,399 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:00:24,400 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:00:24,400 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_707dadee-6ebc-4480-8ad3-18df2cb56dcb/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707dadee-6ebc-4480-8ad3-18df2cb56dcb/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 951d1f5e5395236f7d0da1ed6dd6f4a1398d1a8ad75d935345731aeb4389e0e8 [2022-12-14 06:00:24,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:00:24,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:00:24,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:00:24,588 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:00:24,588 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:00:24,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707dadee-6ebc-4480-8ad3-18df2cb56dcb/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread-wmm/mix015.oepc.i [2022-12-14 06:00:27,074 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:00:27,266 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:00:27,267 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707dadee-6ebc-4480-8ad3-18df2cb56dcb/sv-benchmarks/c/pthread-wmm/mix015.oepc.i [2022-12-14 06:00:27,275 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707dadee-6ebc-4480-8ad3-18df2cb56dcb/bin/utaipan-gh47qXpMRh/data/4dc22e3b3/6bdf7a6127d14028ab07e9981ffc2893/FLAG07a159f79 [2022-12-14 06:00:27,668 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707dadee-6ebc-4480-8ad3-18df2cb56dcb/bin/utaipan-gh47qXpMRh/data/4dc22e3b3/6bdf7a6127d14028ab07e9981ffc2893 [2022-12-14 06:00:27,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:00:27,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:00:27,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:00:27,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:00:27,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:00:27,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:00:27" (1/1) ... [2022-12-14 06:00:27,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c4fb755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:00:27, skipping insertion in model container [2022-12-14 06:00:27,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:00:27" (1/1) ... [2022-12-14 06:00:27,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:00:27,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:00:27,833 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_707dadee-6ebc-4480-8ad3-18df2cb56dcb/sv-benchmarks/c/pthread-wmm/mix015.oepc.i[945,958] [2022-12-14 06:00:27,941 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:27,944 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:27,944 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:27,944 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:27,944 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:27,944 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:27,945 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:27,945 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:27,945 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:27,947 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:27,947 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:27,947 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:27,948 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:27,948 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:27,949 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:27,949 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:27,949 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:27,951 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:27,951 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:27,951 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:27,952 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:27,952 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:27,952 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:27,953 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:27,953 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:27,959 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:27,959 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:27,961 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:27,961 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:27,961 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:27,966 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:27,966 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:27,966 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:27,968 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:27,968 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:27,969 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:27,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:00:27,978 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:00:27,986 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_707dadee-6ebc-4480-8ad3-18df2cb56dcb/sv-benchmarks/c/pthread-wmm/mix015.oepc.i[945,958] [2022-12-14 06:00:27,999 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:28,000 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:28,000 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:28,000 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:28,000 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:28,000 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:28,001 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:28,001 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:28,001 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:28,002 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:28,002 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:28,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:28,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:28,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:28,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:28,004 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:28,004 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:28,005 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:28,005 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:28,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:28,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:28,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:28,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:28,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:28,007 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:28,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:28,011 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:28,012 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:28,012 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:28,012 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:28,015 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:28,015 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:28,015 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:28,017 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:28,017 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 06:00:28,017 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 06:00:28,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:00:28,040 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:00:28,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:00:28 WrapperNode [2022-12-14 06:00:28,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:00:28,041 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:00:28,041 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:00:28,041 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:00:28,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:00:28" (1/1) ... [2022-12-14 06:00:28,059 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:00:28" (1/1) ... [2022-12-14 06:00:28,075 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 138 [2022-12-14 06:00:28,075 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:00:28,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:00:28,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:00:28,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:00:28,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:00:28" (1/1) ... [2022-12-14 06:00:28,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:00:28" (1/1) ... [2022-12-14 06:00:28,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:00:28" (1/1) ... [2022-12-14 06:00:28,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:00:28" (1/1) ... [2022-12-14 06:00:28,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:00:28" (1/1) ... [2022-12-14 06:00:28,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:00:28" (1/1) ... [2022-12-14 06:00:28,093 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:00:28" (1/1) ... [2022-12-14 06:00:28,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:00:28" (1/1) ... [2022-12-14 06:00:28,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:00:28,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:00:28,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:00:28,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:00:28,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:00:28" (1/1) ... [2022-12-14 06:00:28,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:00:28,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707dadee-6ebc-4480-8ad3-18df2cb56dcb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:00:28,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707dadee-6ebc-4480-8ad3-18df2cb56dcb/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:00:28,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707dadee-6ebc-4480-8ad3-18df2cb56dcb/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:00:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 06:00:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-14 06:00:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:00:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 06:00:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 06:00:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-14 06:00:28,157 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-14 06:00:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-14 06:00:28,157 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-14 06:00:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-14 06:00:28,157 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-14 06:00:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 06:00:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-14 06:00:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:00:28,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:00:28,166 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 06:00:28,275 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:00:28,276 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:00:28,524 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:00:28,602 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:00:28,602 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 06:00:28,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:00:28 BoogieIcfgContainer [2022-12-14 06:00:28,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:00:28,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:00:28,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:00:28,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:00:28,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:00:27" (1/3) ... [2022-12-14 06:00:28,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d49611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:00:28, skipping insertion in model container [2022-12-14 06:00:28,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:00:28" (2/3) ... [2022-12-14 06:00:28,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d49611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:00:28, skipping insertion in model container [2022-12-14 06:00:28,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:00:28" (3/3) ... [2022-12-14 06:00:28,610 INFO L112 eAbstractionObserver]: Analyzing ICFG mix015.oepc.i [2022-12-14 06:00:28,616 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 06:00:28,624 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:00:28,624 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 06:00:28,624 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 06:00:28,666 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-14 06:00:28,689 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 06:00:28,699 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 122 transitions, 259 flow [2022-12-14 06:00:28,701 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 122 transitions, 259 flow [2022-12-14 06:00:28,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 122 transitions, 259 flow [2022-12-14 06:00:28,736 INFO L130 PetriNetUnfolder]: 2/119 cut-off events. [2022-12-14 06:00:28,736 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-14 06:00:28,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 119 events. 2/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2022-12-14 06:00:28,741 INFO L119 LiptonReduction]: Number of co-enabled transitions 2440 [2022-12-14 06:00:31,533 INFO L134 LiptonReduction]: Checked pairs total: 6901 [2022-12-14 06:00:31,533 INFO L136 LiptonReduction]: Total number of compositions: 107 [2022-12-14 06:00:31,539 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 30 transitions, 75 flow [2022-12-14 06:00:31,597 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1196 states, 1193 states have (on average 3.4090528080469404) internal successors, (4067), 1195 states have internal predecessors, (4067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:31,613 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:00:31,619 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;@382f1c60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:00:31,619 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-14 06:00:31,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 1196 states, 1193 states have (on average 3.4090528080469404) internal successors, (4067), 1195 states have internal predecessors, (4067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:31,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 06:00:31,629 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:00:31,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 06:00:31,630 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-14 06:00:31,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:00:31,634 INFO L85 PathProgramCache]: Analyzing trace with hash 514954, now seen corresponding path program 1 times [2022-12-14 06:00:31,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:00:31,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459753557] [2022-12-14 06:00:31,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:00:31,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:00:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:00:31,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:00:31,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:00:31,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459753557] [2022-12-14 06:00:31,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459753557] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:00:31,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:00:31,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 06:00:31,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756471913] [2022-12-14 06:00:31,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:00:31,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:00:31,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:00:31,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:00:31,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:00:31,938 INFO L87 Difference]: Start difference. First operand has 1196 states, 1193 states have (on average 3.4090528080469404) internal successors, (4067), 1195 states have internal predecessors, (4067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:32,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:00:32,042 INFO L93 Difference]: Finished difference Result 1004 states and 3201 transitions. [2022-12-14 06:00:32,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:00:32,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 06:00:32,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:00:32,062 INFO L225 Difference]: With dead ends: 1004 [2022-12-14 06:00:32,062 INFO L226 Difference]: Without dead ends: 974 [2022-12-14 06:00:32,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:00:32,066 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 14 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:00:32,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 6 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:00:32,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2022-12-14 06:00:32,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 974. [2022-12-14 06:00:32,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 973 states have (on average 3.20863309352518) internal successors, (3122), 973 states have internal predecessors, (3122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:32,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 3122 transitions. [2022-12-14 06:00:32,165 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 3122 transitions. Word has length 3 [2022-12-14 06:00:32,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:00:32,165 INFO L495 AbstractCegarLoop]: Abstraction has 974 states and 3122 transitions. [2022-12-14 06:00:32,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:32,166 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 3122 transitions. [2022-12-14 06:00:32,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 06:00:32,167 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:00:32,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:00:32,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 06:00:32,167 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-14 06:00:32,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:00:32,168 INFO L85 PathProgramCache]: Analyzing trace with hash 2069911270, now seen corresponding path program 1 times [2022-12-14 06:00:32,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:00:32,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808380572] [2022-12-14 06:00:32,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:00:32,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:00:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:00:32,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:00:32,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:00:32,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808380572] [2022-12-14 06:00:32,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808380572] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:00:32,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:00:32,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:00:32,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658219660] [2022-12-14 06:00:32,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:00:32,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:00:32,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:00:32,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:00:32,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:00:32,346 INFO L87 Difference]: Start difference. First operand 974 states and 3122 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:32,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:00:32,471 INFO L93 Difference]: Finished difference Result 1138 states and 3510 transitions. [2022-12-14 06:00:32,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:00:32,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 06:00:32,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:00:32,478 INFO L225 Difference]: With dead ends: 1138 [2022-12-14 06:00:32,478 INFO L226 Difference]: Without dead ends: 958 [2022-12-14 06:00:32,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:00:32,479 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 24 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:00:32,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 9 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:00:32,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2022-12-14 06:00:32,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 958. [2022-12-14 06:00:32,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 957 states have (on average 3.1954022988505746) internal successors, (3058), 957 states have internal predecessors, (3058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:32,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 3058 transitions. [2022-12-14 06:00:32,515 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 3058 transitions. Word has length 10 [2022-12-14 06:00:32,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:00:32,516 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 3058 transitions. [2022-12-14 06:00:32,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:32,516 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 3058 transitions. [2022-12-14 06:00:32,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 06:00:32,518 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:00:32,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:00:32,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 06:00:32,519 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-14 06:00:32,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:00:32,519 INFO L85 PathProgramCache]: Analyzing trace with hash 961995817, now seen corresponding path program 1 times [2022-12-14 06:00:32,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:00:32,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318254685] [2022-12-14 06:00:32,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:00:32,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:00:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:00:32,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:00:32,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:00:32,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318254685] [2022-12-14 06:00:32,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318254685] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:00:32,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:00:32,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:00:32,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156174303] [2022-12-14 06:00:32,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:00:32,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:00:32,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:00:32,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:00:32,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:00:32,675 INFO L87 Difference]: Start difference. First operand 958 states and 3058 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:32,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:00:32,788 INFO L93 Difference]: Finished difference Result 1010 states and 3114 transitions. [2022-12-14 06:00:32,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:00:32,788 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 06:00:32,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:00:32,796 INFO L225 Difference]: With dead ends: 1010 [2022-12-14 06:00:32,796 INFO L226 Difference]: Without dead ends: 854 [2022-12-14 06:00:32,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-14 06:00:32,797 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 45 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:00:32,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 9 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:00:32,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-12-14 06:00:32,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 854. [2022-12-14 06:00:32,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 3.148886283704572) internal successors, (2686), 853 states have internal predecessors, (2686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:32,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 2686 transitions. [2022-12-14 06:00:32,816 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 2686 transitions. Word has length 12 [2022-12-14 06:00:32,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:00:32,817 INFO L495 AbstractCegarLoop]: Abstraction has 854 states and 2686 transitions. [2022-12-14 06:00:32,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:32,817 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 2686 transitions. [2022-12-14 06:00:32,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 06:00:32,818 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:00:32,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:00:32,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 06:00:32,818 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-14 06:00:32,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:00:32,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1165377096, now seen corresponding path program 1 times [2022-12-14 06:00:32,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:00:32,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064166450] [2022-12-14 06:00:32,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:00:32,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:00:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:00:32,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:00:32,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:00:32,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064166450] [2022-12-14 06:00:32,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064166450] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:00:32,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:00:32,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:00:32,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802935172] [2022-12-14 06:00:32,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:00:32,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:00:32,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:00:32,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:00:32,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:00:32,944 INFO L87 Difference]: Start difference. First operand 854 states and 2686 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:33,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:00:33,069 INFO L93 Difference]: Finished difference Result 894 states and 2728 transitions. [2022-12-14 06:00:33,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:00:33,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 06:00:33,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:00:33,074 INFO L225 Difference]: With dead ends: 894 [2022-12-14 06:00:33,074 INFO L226 Difference]: Without dead ends: 774 [2022-12-14 06:00:33,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-14 06:00:33,076 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 30 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:00:33,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 13 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:00:33,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2022-12-14 06:00:33,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 774. [2022-12-14 06:00:33,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 773 states have (on average 3.107373868046572) internal successors, (2402), 773 states have internal predecessors, (2402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:33,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 2402 transitions. [2022-12-14 06:00:33,103 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 2402 transitions. Word has length 12 [2022-12-14 06:00:33,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:00:33,103 INFO L495 AbstractCegarLoop]: Abstraction has 774 states and 2402 transitions. [2022-12-14 06:00:33,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:33,103 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 2402 transitions. [2022-12-14 06:00:33,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 06:00:33,105 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:00:33,105 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:00:33,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 06:00:33,105 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-14 06:00:33,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:00:33,106 INFO L85 PathProgramCache]: Analyzing trace with hash -720238021, now seen corresponding path program 1 times [2022-12-14 06:00:33,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:00:33,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955612134] [2022-12-14 06:00:33,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:00:33,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:00:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:00:33,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:00:33,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:00:33,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955612134] [2022-12-14 06:00:33,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955612134] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:00:33,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:00:33,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:00:33,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085871214] [2022-12-14 06:00:33,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:00:33,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:00:33,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:00:33,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:00:33,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:00:33,253 INFO L87 Difference]: Start difference. First operand 774 states and 2402 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:33,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:00:33,311 INFO L93 Difference]: Finished difference Result 502 states and 1314 transitions. [2022-12-14 06:00:33,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:00:33,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 06:00:33,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:00:33,315 INFO L225 Difference]: With dead ends: 502 [2022-12-14 06:00:33,315 INFO L226 Difference]: Without dead ends: 502 [2022-12-14 06:00:33,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:00:33,316 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:00:33,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:00:33,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2022-12-14 06:00:33,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 502. [2022-12-14 06:00:33,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 501 states have (on average 2.622754491017964) internal successors, (1314), 501 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:33,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 1314 transitions. [2022-12-14 06:00:33,325 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 1314 transitions. Word has length 14 [2022-12-14 06:00:33,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:00:33,325 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 1314 transitions. [2022-12-14 06:00:33,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:33,326 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 1314 transitions. [2022-12-14 06:00:33,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 06:00:33,326 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:00:33,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:00:33,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 06:00:33,327 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-14 06:00:33,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:00:33,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1280106596, now seen corresponding path program 1 times [2022-12-14 06:00:33,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:00:33,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601505767] [2022-12-14 06:00:33,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:00:33,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:00:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:00:33,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:00:33,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:00:33,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601505767] [2022-12-14 06:00:33,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601505767] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:00:33,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:00:33,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:00:33,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138928221] [2022-12-14 06:00:33,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:00:33,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:00:33,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:00:33,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:00:33,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:00:33,446 INFO L87 Difference]: Start difference. First operand 502 states and 1314 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:33,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:00:33,519 INFO L93 Difference]: Finished difference Result 306 states and 726 transitions. [2022-12-14 06:00:33,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:00:33,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-14 06:00:33,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:00:33,521 INFO L225 Difference]: With dead ends: 306 [2022-12-14 06:00:33,521 INFO L226 Difference]: Without dead ends: 306 [2022-12-14 06:00:33,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:00:33,521 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 21 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:00:33,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 9 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:00:33,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-12-14 06:00:33,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2022-12-14 06:00:33,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 2.380327868852459) internal successors, (726), 305 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:33,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 726 transitions. [2022-12-14 06:00:33,527 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 726 transitions. Word has length 17 [2022-12-14 06:00:33,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:00:33,527 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 726 transitions. [2022-12-14 06:00:33,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:33,528 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 726 transitions. [2022-12-14 06:00:33,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 06:00:33,528 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:00:33,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:00:33,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 06:00:33,528 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-14 06:00:33,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:00:33,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1296215574, now seen corresponding path program 1 times [2022-12-14 06:00:33,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:00:33,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717201604] [2022-12-14 06:00:33,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:00:33,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:00:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:00:33,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:00:33,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:00:33,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717201604] [2022-12-14 06:00:33,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717201604] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:00:33,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:00:33,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:00:33,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93942227] [2022-12-14 06:00:33,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:00:33,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 06:00:33,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:00:33,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 06:00:33,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 06:00:33,995 INFO L87 Difference]: Start difference. First operand 306 states and 726 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:34,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:00:34,359 INFO L93 Difference]: Finished difference Result 484 states and 1090 transitions. [2022-12-14 06:00:34,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 06:00:34,359 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-12-14 06:00:34,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:00:34,360 INFO L225 Difference]: With dead ends: 484 [2022-12-14 06:00:34,360 INFO L226 Difference]: Without dead ends: 426 [2022-12-14 06:00:34,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-14 06:00:34,361 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 74 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:00:34,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 37 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 06:00:34,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-12-14 06:00:34,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 375. [2022-12-14 06:00:34,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 2.3449197860962565) internal successors, (877), 374 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:34,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 877 transitions. [2022-12-14 06:00:34,372 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 877 transitions. Word has length 20 [2022-12-14 06:00:34,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:00:34,372 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 877 transitions. [2022-12-14 06:00:34,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:34,373 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 877 transitions. [2022-12-14 06:00:34,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 06:00:34,373 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:00:34,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:00:34,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 06:00:34,373 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-14 06:00:34,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:00:34,374 INFO L85 PathProgramCache]: Analyzing trace with hash 105841686, now seen corresponding path program 2 times [2022-12-14 06:00:34,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:00:34,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116102902] [2022-12-14 06:00:34,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:00:34,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:00:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:00:34,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:00:34,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:00:34,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116102902] [2022-12-14 06:00:34,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116102902] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:00:34,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:00:34,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:00:34,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328060060] [2022-12-14 06:00:34,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:00:34,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:00:34,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:00:34,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:00:34,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:00:34,522 INFO L87 Difference]: Start difference. First operand 375 states and 877 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:34,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:00:34,599 INFO L93 Difference]: Finished difference Result 320 states and 765 transitions. [2022-12-14 06:00:34,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:00:34,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-12-14 06:00:34,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:00:34,600 INFO L225 Difference]: With dead ends: 320 [2022-12-14 06:00:34,600 INFO L226 Difference]: Without dead ends: 300 [2022-12-14 06:00:34,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:00:34,601 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 34 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:00:34,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 9 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:00:34,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-12-14 06:00:34,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 288. [2022-12-14 06:00:34,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 2.4146341463414633) internal successors, (693), 287 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:34,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 693 transitions. [2022-12-14 06:00:34,606 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 693 transitions. Word has length 20 [2022-12-14 06:00:34,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:00:34,606 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 693 transitions. [2022-12-14 06:00:34,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:34,606 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 693 transitions. [2022-12-14 06:00:34,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 06:00:34,607 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:00:34,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:00:34,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 06:00:34,607 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-14 06:00:34,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:00:34,607 INFO L85 PathProgramCache]: Analyzing trace with hash 454409581, now seen corresponding path program 1 times [2022-12-14 06:00:34,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:00:34,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20142896] [2022-12-14 06:00:34,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:00:34,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:00:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:00:34,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:00:34,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:00:34,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20142896] [2022-12-14 06:00:34,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20142896] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:00:34,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:00:34,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:00:34,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624731607] [2022-12-14 06:00:34,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:00:34,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:00:34,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:00:34,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:00:34,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:00:34,747 INFO L87 Difference]: Start difference. First operand 288 states and 693 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:34,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:00:34,850 INFO L93 Difference]: Finished difference Result 387 states and 914 transitions. [2022-12-14 06:00:34,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:00:34,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-12-14 06:00:34,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:00:34,851 INFO L225 Difference]: With dead ends: 387 [2022-12-14 06:00:34,851 INFO L226 Difference]: Without dead ends: 162 [2022-12-14 06:00:34,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 06:00:34,852 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 25 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:00:34,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 16 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:00:34,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-12-14 06:00:34,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-12-14 06:00:34,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.186335403726708) internal successors, (352), 161 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:34,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 352 transitions. [2022-12-14 06:00:34,855 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 352 transitions. Word has length 24 [2022-12-14 06:00:34,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:00:34,855 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 352 transitions. [2022-12-14 06:00:34,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:34,856 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 352 transitions. [2022-12-14 06:00:34,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 06:00:34,856 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:00:34,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:00:34,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 06:00:34,856 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-14 06:00:34,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:00:34,857 INFO L85 PathProgramCache]: Analyzing trace with hash 553531375, now seen corresponding path program 2 times [2022-12-14 06:00:34,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:00:34,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167857190] [2022-12-14 06:00:34,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:00:34,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:00:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:00:35,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:00:35,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:00:35,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167857190] [2022-12-14 06:00:35,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167857190] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:00:35,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:00:35,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:00:35,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323751090] [2022-12-14 06:00:35,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:00:35,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:00:35,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:00:35,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:00:35,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:00:35,014 INFO L87 Difference]: Start difference. First operand 162 states and 352 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:35,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:00:35,117 INFO L93 Difference]: Finished difference Result 210 states and 449 transitions. [2022-12-14 06:00:35,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:00:35,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-12-14 06:00:35,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:00:35,119 INFO L225 Difference]: With dead ends: 210 [2022-12-14 06:00:35,119 INFO L226 Difference]: Without dead ends: 153 [2022-12-14 06:00:35,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 06:00:35,120 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 32 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:00:35,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 7 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:00:35,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-12-14 06:00:35,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 135. [2022-12-14 06:00:35,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 2.1343283582089554) internal successors, (286), 134 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:35,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 286 transitions. [2022-12-14 06:00:35,122 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 286 transitions. Word has length 24 [2022-12-14 06:00:35,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:00:35,122 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 286 transitions. [2022-12-14 06:00:35,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:35,123 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 286 transitions. [2022-12-14 06:00:35,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 06:00:35,123 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:00:35,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:00:35,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 06:00:35,123 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-14 06:00:35,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:00:35,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1003019793, now seen corresponding path program 3 times [2022-12-14 06:00:35,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:00:35,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123094218] [2022-12-14 06:00:35,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:00:35,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:00:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:00:35,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:00:35,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:00:35,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123094218] [2022-12-14 06:00:35,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123094218] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:00:35,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:00:35,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:00:35,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313997129] [2022-12-14 06:00:35,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:00:35,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 06:00:35,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:00:35,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 06:00:35,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 06:00:35,272 INFO L87 Difference]: Start difference. First operand 135 states and 286 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:35,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:00:35,389 INFO L93 Difference]: Finished difference Result 183 states and 383 transitions. [2022-12-14 06:00:35,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 06:00:35,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-12-14 06:00:35,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:00:35,390 INFO L225 Difference]: With dead ends: 183 [2022-12-14 06:00:35,391 INFO L226 Difference]: Without dead ends: 117 [2022-12-14 06:00:35,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-12-14 06:00:35,391 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 47 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:00:35,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 7 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:00:35,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-12-14 06:00:35,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-12-14 06:00:35,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 2.086206896551724) internal successors, (242), 116 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:35,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 242 transitions. [2022-12-14 06:00:35,395 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 242 transitions. Word has length 24 [2022-12-14 06:00:35,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:00:35,395 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 242 transitions. [2022-12-14 06:00:35,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:35,396 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 242 transitions. [2022-12-14 06:00:35,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 06:00:35,396 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:00:35,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:00:35,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 06:00:35,396 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-14 06:00:35,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:00:35,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1514462929, now seen corresponding path program 4 times [2022-12-14 06:00:35,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:00:35,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485306276] [2022-12-14 06:00:35,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:00:35,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:00:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:00:35,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:00:35,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:00:35,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485306276] [2022-12-14 06:00:35,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485306276] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:00:35,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:00:35,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 06:00:35,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205258251] [2022-12-14 06:00:35,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:00:35,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:00:35,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:00:35,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:00:35,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:00:35,782 INFO L87 Difference]: Start difference. First operand 117 states and 242 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:35,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:00:35,942 INFO L93 Difference]: Finished difference Result 132 states and 265 transitions. [2022-12-14 06:00:35,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 06:00:35,943 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-12-14 06:00:35,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:00:35,944 INFO L225 Difference]: With dead ends: 132 [2022-12-14 06:00:35,944 INFO L226 Difference]: Without dead ends: 71 [2022-12-14 06:00:35,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-14 06:00:35,944 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 40 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:00:35,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 20 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:00:35,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-12-14 06:00:35,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-12-14 06:00:35,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.7714285714285714) internal successors, (124), 70 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:35,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 124 transitions. [2022-12-14 06:00:35,947 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 124 transitions. Word has length 24 [2022-12-14 06:00:35,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:00:35,947 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 124 transitions. [2022-12-14 06:00:35,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:00:35,948 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 124 transitions. [2022-12-14 06:00:35,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 06:00:35,948 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:00:35,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:00:35,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 06:00:35,948 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-14 06:00:35,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:00:35,948 INFO L85 PathProgramCache]: Analyzing trace with hash -643495933, now seen corresponding path program 5 times [2022-12-14 06:00:35,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:00:35,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267034130] [2022-12-14 06:00:35,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:00:35,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:00:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 06:00:35,979 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 06:00:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 06:00:36,025 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 06:00:36,025 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 06:00:36,026 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-12-14 06:00:36,027 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-12-14 06:00:36,027 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-12-14 06:00:36,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-12-14 06:00:36,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2022-12-14 06:00:36,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-12-14 06:00:36,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 06:00:36,029 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 06:00:36,033 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-14 06:00:36,033 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 06:00:36,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 06:00:36 BasicIcfg [2022-12-14 06:00:36,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 06:00:36,075 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 06:00:36,075 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 06:00:36,075 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 06:00:36,075 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:00:28" (3/4) ... [2022-12-14 06:00:36,077 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 06:00:36,119 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707dadee-6ebc-4480-8ad3-18df2cb56dcb/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 06:00:36,119 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 06:00:36,120 INFO L158 Benchmark]: Toolchain (without parser) took 8443.96ms. Allocated memory was 117.4MB in the beginning and 174.1MB in the end (delta: 56.6MB). Free memory was 81.9MB in the beginning and 122.3MB in the end (delta: -40.4MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2022-12-14 06:00:36,120 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 117.4MB. Free memory is still 92.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:00:36,120 INFO L158 Benchmark]: CACSL2BoogieTranslator took 362.00ms. Allocated memory is still 117.4MB. Free memory was 81.5MB in the beginning and 54.6MB in the end (delta: 26.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-14 06:00:36,120 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.73ms. Allocated memory is still 117.4MB. Free memory was 54.6MB in the beginning and 52.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 06:00:36,121 INFO L158 Benchmark]: Boogie Preprocessor took 20.19ms. Allocated memory is still 117.4MB. Free memory was 52.2MB in the beginning and 50.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 06:00:36,121 INFO L158 Benchmark]: RCFGBuilder took 507.61ms. Allocated memory was 117.4MB in the beginning and 144.7MB in the end (delta: 27.3MB). Free memory was 50.1MB in the beginning and 87.0MB in the end (delta: -36.9MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2022-12-14 06:00:36,121 INFO L158 Benchmark]: TraceAbstraction took 7469.00ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 86.4MB in the beginning and 133.8MB in the end (delta: -47.4MB). Peak memory consumption was 79.5MB. Max. memory is 16.1GB. [2022-12-14 06:00:36,121 INFO L158 Benchmark]: Witness Printer took 44.59ms. Allocated memory is still 174.1MB. Free memory was 133.8MB in the beginning and 122.3MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 06:00:36,122 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 117.4MB. Free memory is still 92.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 362.00ms. Allocated memory is still 117.4MB. Free memory was 81.5MB in the beginning and 54.6MB in the end (delta: 26.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.73ms. Allocated memory is still 117.4MB. Free memory was 54.6MB in the beginning and 52.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.19ms. Allocated memory is still 117.4MB. Free memory was 52.2MB in the beginning and 50.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 507.61ms. Allocated memory was 117.4MB in the beginning and 144.7MB in the end (delta: 27.3MB). Free memory was 50.1MB in the beginning and 87.0MB in the end (delta: -36.9MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. * TraceAbstraction took 7469.00ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 86.4MB in the beginning and 133.8MB in the end (delta: -47.4MB). Peak memory consumption was 79.5MB. Max. memory is 16.1GB. * Witness Printer took 44.59ms. Allocated memory is still 174.1MB. Free memory was 133.8MB in the beginning and 122.3MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 130 PlacesBefore, 39 PlacesAfterwards, 122 TransitionsBefore, 30 TransitionsAfterwards, 2440 CoEnabledTransitionPairs, 7 FixpointIterations, 45 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 107 TotalNumberOfCompositions, 6901 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3468, independent: 3271, independent conditional: 0, independent unconditional: 3271, dependent: 197, dependent conditional: 0, dependent unconditional: 197, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1854, independent: 1803, independent conditional: 0, independent unconditional: 1803, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1854, independent: 1786, independent conditional: 0, independent unconditional: 1786, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 68, independent: 17, independent conditional: 0, independent unconditional: 17, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 256, independent: 15, independent conditional: 0, independent unconditional: 15, dependent: 242, dependent conditional: 0, dependent unconditional: 242, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3468, independent: 1468, independent conditional: 0, independent unconditional: 1468, dependent: 146, dependent conditional: 0, dependent unconditional: 146, unknown: 1854, unknown conditional: 0, unknown unconditional: 1854] , Statistics on independence cache: Total cache size (in pairs): 195, Positive cache size: 165, Positive conditional cache size: 0, Positive unconditional cache size: 165, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L713] 0 int __unbuffered_p0_EBX = 0; [L715] 0 int __unbuffered_p1_EAX = 0; [L717] 0 int __unbuffered_p2_EAX = 0; [L719] 0 int __unbuffered_p2_EBX = 0; [L721] 0 int a = 0; [L722] 0 _Bool a$flush_delayed; [L723] 0 int a$mem_tmp; [L724] 0 _Bool a$r_buff0_thd0; [L725] 0 _Bool a$r_buff0_thd1; [L726] 0 _Bool a$r_buff0_thd2; [L727] 0 _Bool a$r_buff0_thd3; [L728] 0 _Bool a$r_buff1_thd0; [L729] 0 _Bool a$r_buff1_thd1; [L730] 0 _Bool a$r_buff1_thd2; [L731] 0 _Bool a$r_buff1_thd3; [L732] 0 _Bool a$read_delayed; [L733] 0 int *a$read_delayed_var; [L734] 0 int a$w_buff0; [L735] 0 _Bool a$w_buff0_used; [L736] 0 int a$w_buff1; [L737] 0 _Bool a$w_buff1_used; [L738] 0 _Bool main$tmp_guard0; [L739] 0 _Bool main$tmp_guard1; [L741] 0 int x = 0; [L743] 0 int y = 0; [L745] 0 int z = 0; [L746] 0 _Bool weak$$choice0; [L747] 0 _Bool weak$$choice2; [L850] 0 pthread_t t385; [L851] FCALL, FORK 0 pthread_create(&t385, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=0, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=0, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t385, ((void *)0), P0, ((void *)0))=0, t385={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L751] 1 a$w_buff1 = a$w_buff0 [L752] 1 a$w_buff0 = 1 [L753] 1 a$w_buff1_used = a$w_buff0_used [L754] 1 a$w_buff0_used = (_Bool)1 [L755] CALL 1 __VERIFIER_assert(!(a$w_buff1_used && a$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L755] RET 1 __VERIFIER_assert(!(a$w_buff1_used && a$w_buff0_used)) [L756] 1 a$r_buff1_thd0 = a$r_buff0_thd0 [L757] 1 a$r_buff1_thd1 = a$r_buff0_thd1 [L758] 1 a$r_buff1_thd2 = a$r_buff0_thd2 [L759] 1 a$r_buff1_thd3 = a$r_buff0_thd3 [L760] 1 a$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L852] 0 pthread_t t386; [L853] FCALL, FORK 0 pthread_create(&t386, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t386, ((void *)0), P1, ((void *)0))=1, t385={5:0}, t386={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L854] 0 pthread_t t387; [L763] 1 x = 1 [L766] 1 __unbuffered_p0_EAX = x VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z=0] [L769] 1 __unbuffered_p0_EBX = y VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z=0] [L786] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=1, z=0] [L855] FCALL, FORK 0 pthread_create(&t387, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t387, ((void *)0), P2, ((void *)0))=2, t385={5:0}, t386={6:0}, t387={3:0}, weak$$choice0=0, weak$$choice2=0, x=1, y=1, z=0] [L789] 2 __unbuffered_p1_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=1, z=0] [L792] 2 a = a$w_buff0_used && a$r_buff0_thd2 ? a$w_buff0 : (a$w_buff1_used && a$r_buff1_thd2 ? a$w_buff1 : a) [L793] 2 a$w_buff0_used = a$w_buff0_used && a$r_buff0_thd2 ? (_Bool)0 : a$w_buff0_used [L794] 2 a$w_buff1_used = a$w_buff0_used && a$r_buff0_thd2 || a$w_buff1_used && a$r_buff1_thd2 ? (_Bool)0 : a$w_buff1_used [L795] 2 a$r_buff0_thd2 = a$w_buff0_used && a$r_buff0_thd2 ? (_Bool)0 : a$r_buff0_thd2 [L796] 2 a$r_buff1_thd2 = a$w_buff0_used && a$r_buff0_thd2 || a$w_buff1_used && a$r_buff1_thd2 ? (_Bool)0 : a$r_buff1_thd2 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=1, z=0] [L806] 3 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=1, z=1] [L809] 3 __unbuffered_p2_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=1, z=1] [L812] 3 weak$$choice0 = __VERIFIER_nondet_bool() [L813] 3 weak$$choice2 = __VERIFIER_nondet_bool() [L814] 3 a$flush_delayed = weak$$choice2 [L815] 3 a$mem_tmp = a [L816] 3 a = !a$w_buff0_used || !a$r_buff0_thd3 && !a$w_buff1_used || !a$r_buff0_thd3 && !a$r_buff1_thd3 ? a : (a$w_buff0_used && a$r_buff0_thd3 ? a$w_buff0 : a$w_buff1) [L817] 3 a$w_buff0 = weak$$choice2 ? a$w_buff0 : (!a$w_buff0_used || !a$r_buff0_thd3 && !a$w_buff1_used || !a$r_buff0_thd3 && !a$r_buff1_thd3 ? a$w_buff0 : (a$w_buff0_used && a$r_buff0_thd3 ? a$w_buff0 : a$w_buff0)) [L818] 3 a$w_buff1 = weak$$choice2 ? a$w_buff1 : (!a$w_buff0_used || !a$r_buff0_thd3 && !a$w_buff1_used || !a$r_buff0_thd3 && !a$r_buff1_thd3 ? a$w_buff1 : (a$w_buff0_used && a$r_buff0_thd3 ? a$w_buff1 : a$w_buff1)) [L819] 3 a$w_buff0_used = weak$$choice2 ? a$w_buff0_used : (!a$w_buff0_used || !a$r_buff0_thd3 && !a$w_buff1_used || !a$r_buff0_thd3 && !a$r_buff1_thd3 ? a$w_buff0_used : (a$w_buff0_used && a$r_buff0_thd3 ? (_Bool)0 : a$w_buff0_used)) [L820] 3 a$w_buff1_used = weak$$choice2 ? a$w_buff1_used : (!a$w_buff0_used || !a$r_buff0_thd3 && !a$w_buff1_used || !a$r_buff0_thd3 && !a$r_buff1_thd3 ? a$w_buff1_used : (a$w_buff0_used && a$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L821] 3 a$r_buff0_thd3 = weak$$choice2 ? a$r_buff0_thd3 : (!a$w_buff0_used || !a$r_buff0_thd3 && !a$w_buff1_used || !a$r_buff0_thd3 && !a$r_buff1_thd3 ? a$r_buff0_thd3 : (a$w_buff0_used && a$r_buff0_thd3 ? (_Bool)0 : a$r_buff0_thd3)) [L822] 3 a$r_buff1_thd3 = weak$$choice2 ? a$r_buff1_thd3 : (!a$w_buff0_used || !a$r_buff0_thd3 && !a$w_buff1_used || !a$r_buff0_thd3 && !a$r_buff1_thd3 ? a$r_buff1_thd3 : (a$w_buff0_used && a$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L823] 3 __unbuffered_p2_EBX = a [L824] 3 a = a$flush_delayed ? a$mem_tmp : a [L825] 3 a$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=0, x=1, y=1, z=1] [L828] 3 a = a$w_buff0_used && a$r_buff0_thd3 ? a$w_buff0 : (a$w_buff1_used && a$r_buff1_thd3 ? a$w_buff1 : a) [L829] 3 a$w_buff0_used = a$w_buff0_used && a$r_buff0_thd3 ? (_Bool)0 : a$w_buff0_used [L830] 3 a$w_buff1_used = a$w_buff0_used && a$r_buff0_thd3 || a$w_buff1_used && a$r_buff1_thd3 ? (_Bool)0 : a$w_buff1_used [L831] 3 a$r_buff0_thd3 = a$w_buff0_used && a$r_buff0_thd3 ? (_Bool)0 : a$r_buff0_thd3 [L832] 3 a$r_buff1_thd3 = a$w_buff0_used && a$r_buff0_thd3 || a$w_buff1_used && a$r_buff1_thd3 ? (_Bool)0 : a$r_buff1_thd3 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=0, x=1, y=1, z=1] [L835] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L837] 3 return 0; [L772] 1 a = a$w_buff0_used && a$r_buff0_thd1 ? a$w_buff0 : (a$w_buff1_used && a$r_buff1_thd1 ? a$w_buff1 : a) [L773] 1 a$w_buff0_used = a$w_buff0_used && a$r_buff0_thd1 ? (_Bool)0 : a$w_buff0_used [L774] 1 a$w_buff1_used = a$w_buff0_used && a$r_buff0_thd1 || a$w_buff1_used && a$r_buff1_thd1 ? (_Bool)0 : a$w_buff1_used [L775] 1 a$r_buff0_thd1 = a$w_buff0_used && a$r_buff0_thd1 ? (_Bool)0 : a$r_buff0_thd1 [L776] 1 a$r_buff1_thd1 = a$w_buff0_used && a$r_buff0_thd1 || a$w_buff1_used && a$r_buff1_thd1 ? (_Bool)0 : a$r_buff1_thd1 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=0, x=1, y=1, z=1] [L779] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L781] 1 return 0; [L799] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L801] 2 return 0; [L857] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L859] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L859] RET 0 assume_abort_if_not(main$tmp_guard0) [L861] 0 a = a$w_buff0_used && a$r_buff0_thd0 ? a$w_buff0 : (a$w_buff1_used && a$r_buff1_thd0 ? a$w_buff1 : a) [L862] 0 a$w_buff0_used = a$w_buff0_used && a$r_buff0_thd0 ? (_Bool)0 : a$w_buff0_used [L863] 0 a$w_buff1_used = a$w_buff0_used && a$r_buff0_thd0 || a$w_buff1_used && a$r_buff1_thd0 ? (_Bool)0 : a$w_buff1_used [L864] 0 a$r_buff0_thd0 = a$w_buff0_used && a$r_buff0_thd0 ? (_Bool)0 : a$r_buff0_thd0 [L865] 0 a$r_buff1_thd0 = a$w_buff0_used && a$r_buff0_thd0 || a$w_buff1_used && a$r_buff1_thd0 ? (_Bool)0 : a$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t385={5:0}, t386={6:0}, t387={3:0}, weak$$choice0=49, weak$$choice2=0, x=1, y=1, z=1] [L868] 0 main$tmp_guard1 = !(__unbuffered_p0_EAX == 1 && __unbuffered_p0_EBX == 0 && __unbuffered_p1_EAX == 0 && __unbuffered_p2_EAX == 1 && __unbuffered_p2_EBX == 0) [L870] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \old(expression)=1, \result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, a=1, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=0, x=1, y=1, z=1] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 853]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 855]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 851]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 152 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 7.3s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 394 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 394 mSDsluCounter, 148 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 93 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1354 IncrementalHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 55 mSDtfsCounter, 1354 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1196occurred in iteration=0, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 81 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 228 NumberOfCodeBlocks, 228 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 192 ConstructedInterpolants, 0 QuantifiedInterpolants, 1515 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-14 06:00:36,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707dadee-6ebc-4480-8ad3-18df2cb56dcb/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE