./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4be0-2b48-415d-b396-e8f5eb6f8174/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4be0-2b48-415d-b396-e8f5eb6f8174/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4be0-2b48-415d-b396-e8f5eb6f8174/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4be0-2b48-415d-b396-e8f5eb6f8174/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4be0-2b48-415d-b396-e8f5eb6f8174/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4be0-2b48-415d-b396-e8f5eb6f8174/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 01:00:10,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:00:10,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:00:11,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:00:11,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:00:11,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:00:11,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:00:11,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:00:11,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:00:11,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:00:11,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:00:11,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:00:11,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:00:11,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:00:11,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:00:11,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:00:11,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:00:11,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:00:11,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:00:11,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:00:11,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:00:11,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:00:11,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:00:11,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:00:11,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:00:11,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:00:11,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:00:11,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:00:11,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:00:11,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:00:11,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:00:11,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:00:11,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:00:11,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:00:11,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:00:11,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:00:11,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:00:11,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:00:11,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:00:11,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:00:11,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:00:11,082 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4be0-2b48-415d-b396-e8f5eb6f8174/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 01:00:11,122 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:00:11,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:00:11,123 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:00:11,123 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:00:11,124 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:00:11,125 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:00:11,125 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:00:11,125 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:00:11,125 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:00:11,126 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 01:00:11,127 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:00:11,127 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:00:11,127 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 01:00:11,128 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 01:00:11,128 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:00:11,128 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 01:00:11,128 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 01:00:11,129 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 01:00:11,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:00:11,130 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 01:00:11,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 01:00:11,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 01:00:11,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:00:11,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 01:00:11,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:00:11,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 01:00:11,132 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 01:00:11,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 01:00:11,133 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:00:11,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 01:00:11,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:00:11,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:00:11,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:00:11,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:00:11,134 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 01:00:11,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:00:11,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 01:00:11,135 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 01:00:11,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 01:00:11,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 01:00:11,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:00:11,136 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_fb0a4be0-2b48-415d-b396-e8f5eb6f8174/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4be0-2b48-415d-b396-e8f5eb6f8174/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 [2022-11-26 01:00:11,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:00:11,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:00:11,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:00:11,483 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:00:11,483 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:00:11,485 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4be0-2b48-415d-b396-e8f5eb6f8174/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2022-11-26 01:00:14,504 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:00:14,723 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:00:14,724 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4be0-2b48-415d-b396-e8f5eb6f8174/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2022-11-26 01:00:14,732 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4be0-2b48-415d-b396-e8f5eb6f8174/bin/utaipan-ByfvJB40ur/data/7dffca598/6f42103fbb7e43dab0b65b4f3e66be6b/FLAGa265d2fb5 [2022-11-26 01:00:14,750 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4be0-2b48-415d-b396-e8f5eb6f8174/bin/utaipan-ByfvJB40ur/data/7dffca598/6f42103fbb7e43dab0b65b4f3e66be6b [2022-11-26 01:00:14,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:00:14,754 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:00:14,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:00:14,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:00:14,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:00:14,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:00:14" (1/1) ... [2022-11-26 01:00:14,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32d2297a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:00:14, skipping insertion in model container [2022-11-26 01:00:14,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:00:14" (1/1) ... [2022-11-26 01:00:14,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:00:14,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:00:14,941 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:14,943 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:14,943 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:14,944 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:14,945 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:14,945 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:14,945 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:14,946 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:14,946 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:14,946 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:14,948 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:14,949 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:14,949 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:14,950 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:14,950 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:14,951 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:14,952 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:14,952 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:14,953 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:14,954 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:14,954 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:14,955 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:14,955 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:14,956 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:14,956 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:14,956 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:14,957 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:14,958 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:14,958 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:14,958 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:14,959 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:14,959 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:14,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:14,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:14,961 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:14,961 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:14,962 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:14,962 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:14,962 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:14,963 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:14,963 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:14,964 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:14,965 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:14,965 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:14,966 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:14,966 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:14,966 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:14,967 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:14,967 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:14,968 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:14,980 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_fb0a4be0-2b48-415d-b396-e8f5eb6f8174/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c[4400,4413] [2022-11-26 01:00:14,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:00:14,995 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 01:00:15,009 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:15,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:15,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:15,011 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:15,011 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:15,012 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:15,012 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:15,012 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:15,012 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:15,013 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:15,013 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:15,014 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:15,014 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:15,015 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:15,015 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:15,016 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:15,016 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:15,016 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:15,017 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:15,018 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:15,018 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:15,018 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:15,019 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:15,019 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:15,019 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:15,020 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:15,021 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:15,021 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:15,021 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:15,022 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:15,022 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:15,023 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:15,023 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:15,023 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:15,024 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:15,024 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:15,025 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:15,025 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:15,025 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:15,026 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:15,026 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:15,027 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:15,027 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:15,028 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:15,028 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:15,028 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:15,029 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:15,029 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:15,030 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:00:15,030 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:00:15,040 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_fb0a4be0-2b48-415d-b396-e8f5eb6f8174/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c[4400,4413] [2022-11-26 01:00:15,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:00:15,057 INFO L208 MainTranslator]: Completed translation [2022-11-26 01:00:15,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:00:15 WrapperNode [2022-11-26 01:00:15,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:00:15,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 01:00:15,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 01:00:15,059 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 01:00:15,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:00:15" (1/1) ... [2022-11-26 01:00:15,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:00:15" (1/1) ... [2022-11-26 01:00:15,119 INFO L138 Inliner]: procedures = 25, calls = 100, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 278 [2022-11-26 01:00:15,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 01:00:15,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 01:00:15,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 01:00:15,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 01:00:15,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:00:15" (1/1) ... [2022-11-26 01:00:15,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:00:15" (1/1) ... [2022-11-26 01:00:15,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:00:15" (1/1) ... [2022-11-26 01:00:15,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:00:15" (1/1) ... [2022-11-26 01:00:15,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:00:15" (1/1) ... [2022-11-26 01:00:15,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:00:15" (1/1) ... [2022-11-26 01:00:15,158 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:00:15" (1/1) ... [2022-11-26 01:00:15,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:00:15" (1/1) ... [2022-11-26 01:00:15,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 01:00:15,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 01:00:15,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 01:00:15,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 01:00:15,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:00:15" (1/1) ... [2022-11-26 01:00:15,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:00:15,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4be0-2b48-415d-b396-e8f5eb6f8174/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:00:15,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4be0-2b48-415d-b396-e8f5eb6f8174/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 01:00:15,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0a4be0-2b48-415d-b396-e8f5eb6f8174/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 01:00:15,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 01:00:15,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 01:00:15,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 01:00:15,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 01:00:15,259 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-26 01:00:15,260 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-26 01:00:15,261 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-26 01:00:15,261 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-26 01:00:15,265 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-26 01:00:15,265 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-26 01:00:15,266 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-26 01:00:15,266 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-26 01:00:15,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 01:00:15,267 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-26 01:00:15,268 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-26 01:00:15,268 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-26 01:00:15,268 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-26 01:00:15,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-26 01:00:15,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-26 01:00:15,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 01:00:15,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 01:00:15,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 01:00:15,275 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-26 01:00:15,461 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 01:00:15,465 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 01:00:15,960 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 01:00:16,055 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 01:00:16,055 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 01:00:16,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:00:16 BoogieIcfgContainer [2022-11-26 01:00:16,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 01:00:16,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 01:00:16,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 01:00:16,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 01:00:16,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 01:00:14" (1/3) ... [2022-11-26 01:00:16,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3413c08c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:00:16, skipping insertion in model container [2022-11-26 01:00:16,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:00:15" (2/3) ... [2022-11-26 01:00:16,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3413c08c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:00:16, skipping insertion in model container [2022-11-26 01:00:16,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:00:16" (3/3) ... [2022-11-26 01:00:16,067 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-6.wvr.c [2022-11-26 01:00:16,076 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-26 01:00:16,087 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 01:00:16,087 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 01:00:16,087 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-26 01:00:16,174 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-11-26 01:00:16,233 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 01:00:16,260 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 188 transitions, 424 flow [2022-11-26 01:00:16,265 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 188 transitions, 424 flow [2022-11-26 01:00:16,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 188 transitions, 424 flow [2022-11-26 01:00:16,414 INFO L130 PetriNetUnfolder]: 2/182 cut-off events. [2022-11-26 01:00:16,415 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-26 01:00:16,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 182 events. 2/182 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 80 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2022-11-26 01:00:16,425 INFO L119 LiptonReduction]: Number of co-enabled transitions 3042 [2022-11-26 01:00:29,320 INFO L134 LiptonReduction]: Checked pairs total: 7645 [2022-11-26 01:00:29,320 INFO L136 LiptonReduction]: Total number of compositions: 152 [2022-11-26 01:00:29,328 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 64 places, 45 transitions, 138 flow [2022-11-26 01:00:29,551 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3642 states, 3641 states have (on average 4.337819280417468) internal successors, (15794), 3641 states have internal predecessors, (15794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:29,570 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:00:29,576 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;@4574010e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:00:29,576 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-26 01:00:29,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 3642 states, 3641 states have (on average 4.337819280417468) internal successors, (15794), 3641 states have internal predecessors, (15794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:29,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:00:29,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:00:29,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:00:29,639 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:00:29,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:00:29,644 INFO L85 PathProgramCache]: Analyzing trace with hash 896202168, now seen corresponding path program 1 times [2022-11-26 01:00:29,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:00:29,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302132846] [2022-11-26 01:00:29,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:29,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:00:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:30,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:30,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:00:30,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302132846] [2022-11-26 01:00:30,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302132846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:00:30,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:00:30,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 01:00:30,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434524446] [2022-11-26 01:00:30,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:00:30,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 01:00:30,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:00:30,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 01:00:30,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-26 01:00:30,940 INFO L87 Difference]: Start difference. First operand has 3642 states, 3641 states have (on average 4.337819280417468) internal successors, (15794), 3641 states have internal predecessors, (15794), 0 states have call successors, (0), 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 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:31,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:00:31,645 INFO L93 Difference]: Finished difference Result 9844 states and 40739 transitions. [2022-11-26 01:00:31,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 01:00:31,647 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:00:31,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:00:31,746 INFO L225 Difference]: With dead ends: 9844 [2022-11-26 01:00:31,747 INFO L226 Difference]: Without dead ends: 9844 [2022-11-26 01:00:31,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-26 01:00:31,752 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 91 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 01:00:31,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 0 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 01:00:31,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9844 states. [2022-11-26 01:00:32,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9844 to 5984. [2022-11-26 01:00:32,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5984 states, 5983 states have (on average 4.278455624268761) internal successors, (25598), 5983 states have internal predecessors, (25598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:32,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5984 states to 5984 states and 25598 transitions. [2022-11-26 01:00:32,212 INFO L78 Accepts]: Start accepts. Automaton has 5984 states and 25598 transitions. Word has length 38 [2022-11-26 01:00:32,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:00:32,214 INFO L495 AbstractCegarLoop]: Abstraction has 5984 states and 25598 transitions. [2022-11-26 01:00:32,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:32,218 INFO L276 IsEmpty]: Start isEmpty. Operand 5984 states and 25598 transitions. [2022-11-26 01:00:32,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:00:32,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:00:32,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:00:32,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 01:00:32,244 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:00:32,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:00:32,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1964961544, now seen corresponding path program 2 times [2022-11-26 01:00:32,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:00:32,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775340035] [2022-11-26 01:00:32,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:32,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:00:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:33,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:33,729 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:00:33,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775340035] [2022-11-26 01:00:33,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775340035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:00:33,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:00:33,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 01:00:33,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454187680] [2022-11-26 01:00:33,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:00:33,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 01:00:33,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:00:33,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 01:00:33,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-26 01:00:33,734 INFO L87 Difference]: Start difference. First operand 5984 states and 25598 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:34,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:00:34,114 INFO L93 Difference]: Finished difference Result 10168 states and 41103 transitions. [2022-11-26 01:00:34,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 01:00:34,115 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:00:34,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:00:34,178 INFO L225 Difference]: With dead ends: 10168 [2022-11-26 01:00:34,180 INFO L226 Difference]: Without dead ends: 6888 [2022-11-26 01:00:34,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-26 01:00:34,186 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 77 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 01:00:34,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 0 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 01:00:34,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6888 states. [2022-11-26 01:00:34,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6888 to 6888. [2022-11-26 01:00:34,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6888 states, 6887 states have (on average 4.149266734427182) internal successors, (28576), 6887 states have internal predecessors, (28576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:34,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6888 states to 6888 states and 28576 transitions. [2022-11-26 01:00:34,513 INFO L78 Accepts]: Start accepts. Automaton has 6888 states and 28576 transitions. Word has length 38 [2022-11-26 01:00:34,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:00:34,516 INFO L495 AbstractCegarLoop]: Abstraction has 6888 states and 28576 transitions. [2022-11-26 01:00:34,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:34,518 INFO L276 IsEmpty]: Start isEmpty. Operand 6888 states and 28576 transitions. [2022-11-26 01:00:34,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:00:34,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:00:34,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:00:34,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 01:00:34,552 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:00:34,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:00:34,553 INFO L85 PathProgramCache]: Analyzing trace with hash -243220692, now seen corresponding path program 3 times [2022-11-26 01:00:34,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:00:34,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823293258] [2022-11-26 01:00:34,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:34,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:00:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:35,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:35,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:00:35,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823293258] [2022-11-26 01:00:35,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823293258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:00:35,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:00:35,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 01:00:35,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152225065] [2022-11-26 01:00:35,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:00:35,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 01:00:35,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:00:35,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 01:00:35,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-26 01:00:35,250 INFO L87 Difference]: Start difference. First operand 6888 states and 28576 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:35,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:00:35,887 INFO L93 Difference]: Finished difference Result 13226 states and 52020 transitions. [2022-11-26 01:00:35,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 01:00:35,888 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:00:35,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:00:35,968 INFO L225 Difference]: With dead ends: 13226 [2022-11-26 01:00:35,968 INFO L226 Difference]: Without dead ends: 13204 [2022-11-26 01:00:35,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-26 01:00:35,972 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 123 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 01:00:35,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 0 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 01:00:36,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13204 states. [2022-11-26 01:00:36,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13204 to 8090. [2022-11-26 01:00:36,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8090 states, 8089 states have (on average 4.069724316973668) internal successors, (32920), 8089 states have internal predecessors, (32920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:36,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8090 states to 8090 states and 32920 transitions. [2022-11-26 01:00:36,431 INFO L78 Accepts]: Start accepts. Automaton has 8090 states and 32920 transitions. Word has length 38 [2022-11-26 01:00:36,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:00:36,432 INFO L495 AbstractCegarLoop]: Abstraction has 8090 states and 32920 transitions. [2022-11-26 01:00:36,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:36,432 INFO L276 IsEmpty]: Start isEmpty. Operand 8090 states and 32920 transitions. [2022-11-26 01:00:36,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:00:36,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:00:36,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:00:36,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 01:00:36,603 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:00:36,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:00:36,604 INFO L85 PathProgramCache]: Analyzing trace with hash -841552712, now seen corresponding path program 4 times [2022-11-26 01:00:36,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:00:36,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706143762] [2022-11-26 01:00:36,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:36,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:00:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:37,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:37,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:00:37,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706143762] [2022-11-26 01:00:37,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706143762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:00:37,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:00:37,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 01:00:37,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288358237] [2022-11-26 01:00:37,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:00:37,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 01:00:37,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:00:37,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 01:00:37,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-26 01:00:37,478 INFO L87 Difference]: Start difference. First operand 8090 states and 32920 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:38,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:00:38,216 INFO L93 Difference]: Finished difference Result 14266 states and 55161 transitions. [2022-11-26 01:00:38,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 01:00:38,216 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:00:38,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:00:38,325 INFO L225 Difference]: With dead ends: 14266 [2022-11-26 01:00:38,325 INFO L226 Difference]: Without dead ends: 14226 [2022-11-26 01:00:38,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-26 01:00:38,329 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 110 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-26 01:00:38,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 0 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-26 01:00:38,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14226 states. [2022-11-26 01:00:38,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14226 to 10966. [2022-11-26 01:00:38,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10966 states, 10965 states have (on average 3.93406292749658) internal successors, (43137), 10965 states have internal predecessors, (43137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:38,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10966 states to 10966 states and 43137 transitions. [2022-11-26 01:00:38,904 INFO L78 Accepts]: Start accepts. Automaton has 10966 states and 43137 transitions. Word has length 38 [2022-11-26 01:00:38,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:00:38,905 INFO L495 AbstractCegarLoop]: Abstraction has 10966 states and 43137 transitions. [2022-11-26 01:00:38,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:38,905 INFO L276 IsEmpty]: Start isEmpty. Operand 10966 states and 43137 transitions. [2022-11-26 01:00:38,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:00:38,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:00:38,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:00:38,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 01:00:38,958 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:00:38,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:00:38,958 INFO L85 PathProgramCache]: Analyzing trace with hash -929661618, now seen corresponding path program 5 times [2022-11-26 01:00:38,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:00:38,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849987500] [2022-11-26 01:00:38,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:38,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:00:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:39,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:39,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:00:39,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849987500] [2022-11-26 01:00:39,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849987500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:00:39,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:00:39,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 01:00:39,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899615166] [2022-11-26 01:00:39,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:00:39,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 01:00:39,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:00:39,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 01:00:39,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-26 01:00:39,704 INFO L87 Difference]: Start difference. First operand 10966 states and 43137 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:40,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:00:40,590 INFO L93 Difference]: Finished difference Result 15882 states and 61000 transitions. [2022-11-26 01:00:40,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 01:00:40,591 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:00:40,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:00:40,667 INFO L225 Difference]: With dead ends: 15882 [2022-11-26 01:00:40,667 INFO L226 Difference]: Without dead ends: 15800 [2022-11-26 01:00:40,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-11-26 01:00:40,668 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 147 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-26 01:00:40,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 0 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-26 01:00:40,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15800 states. [2022-11-26 01:00:41,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15800 to 11872. [2022-11-26 01:00:41,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11872 states, 11871 states have (on average 3.920309999157611) internal successors, (46538), 11871 states have internal predecessors, (46538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:41,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11872 states to 11872 states and 46538 transitions. [2022-11-26 01:00:41,251 INFO L78 Accepts]: Start accepts. Automaton has 11872 states and 46538 transitions. Word has length 38 [2022-11-26 01:00:41,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:00:41,251 INFO L495 AbstractCegarLoop]: Abstraction has 11872 states and 46538 transitions. [2022-11-26 01:00:41,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:41,252 INFO L276 IsEmpty]: Start isEmpty. Operand 11872 states and 46538 transitions. [2022-11-26 01:00:41,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:00:41,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:00:41,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:00:41,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 01:00:41,288 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:00:41,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:00:41,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1082262100, now seen corresponding path program 6 times [2022-11-26 01:00:41,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:00:41,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743966392] [2022-11-26 01:00:41,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:41,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:00:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:41,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:41,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:00:41,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743966392] [2022-11-26 01:00:41,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743966392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:00:41,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:00:41,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 01:00:41,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80837995] [2022-11-26 01:00:41,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:00:41,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 01:00:41,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:00:41,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 01:00:41,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-26 01:00:41,890 INFO L87 Difference]: Start difference. First operand 11872 states and 46538 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:42,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:00:42,639 INFO L93 Difference]: Finished difference Result 18008 states and 68455 transitions. [2022-11-26 01:00:42,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 01:00:42,640 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:00:42,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:00:42,712 INFO L225 Difference]: With dead ends: 18008 [2022-11-26 01:00:42,712 INFO L226 Difference]: Without dead ends: 17964 [2022-11-26 01:00:42,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-11-26 01:00:42,713 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 140 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 01:00:42,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 0 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 01:00:42,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17964 states. [2022-11-26 01:00:43,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17964 to 13104. [2022-11-26 01:00:43,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13104 states, 13103 states have (on average 3.888880409066626) internal successors, (50956), 13103 states have internal predecessors, (50956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:43,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13104 states to 13104 states and 50956 transitions. [2022-11-26 01:00:43,460 INFO L78 Accepts]: Start accepts. Automaton has 13104 states and 50956 transitions. Word has length 38 [2022-11-26 01:00:43,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:00:43,461 INFO L495 AbstractCegarLoop]: Abstraction has 13104 states and 50956 transitions. [2022-11-26 01:00:43,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:43,461 INFO L276 IsEmpty]: Start isEmpty. Operand 13104 states and 50956 transitions. [2022-11-26 01:00:43,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:00:43,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:00:43,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:00:43,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 01:00:43,518 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:00:43,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:00:43,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1116256292, now seen corresponding path program 7 times [2022-11-26 01:00:43,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:00:43,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327609581] [2022-11-26 01:00:43,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:43,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:00:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:44,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:44,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:00:44,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327609581] [2022-11-26 01:00:44,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327609581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:00:44,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:00:44,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 01:00:44,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109245459] [2022-11-26 01:00:44,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:00:44,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 01:00:44,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:00:44,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 01:00:44,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-26 01:00:44,156 INFO L87 Difference]: Start difference. First operand 13104 states and 50956 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:44,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:00:44,982 INFO L93 Difference]: Finished difference Result 17822 states and 67284 transitions. [2022-11-26 01:00:44,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 01:00:44,982 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:00:44,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:00:45,029 INFO L225 Difference]: With dead ends: 17822 [2022-11-26 01:00:45,029 INFO L226 Difference]: Without dead ends: 17802 [2022-11-26 01:00:45,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-26 01:00:45,030 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 130 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 01:00:45,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 0 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 01:00:45,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17802 states. [2022-11-26 01:00:45,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17802 to 13172. [2022-11-26 01:00:45,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13172 states, 13171 states have (on average 3.880646875711791) internal successors, (51112), 13171 states have internal predecessors, (51112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:45,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13172 states to 13172 states and 51112 transitions. [2022-11-26 01:00:45,547 INFO L78 Accepts]: Start accepts. Automaton has 13172 states and 51112 transitions. Word has length 38 [2022-11-26 01:00:45,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:00:45,547 INFO L495 AbstractCegarLoop]: Abstraction has 13172 states and 51112 transitions. [2022-11-26 01:00:45,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:45,548 INFO L276 IsEmpty]: Start isEmpty. Operand 13172 states and 51112 transitions. [2022-11-26 01:00:45,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:00:45,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:00:45,583 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:00:45,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 01:00:45,584 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:00:45,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:00:45,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1276694064, now seen corresponding path program 8 times [2022-11-26 01:00:45,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:00:45,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055431560] [2022-11-26 01:00:45,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:45,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:00:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:46,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:46,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:00:46,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055431560] [2022-11-26 01:00:46,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055431560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:00:46,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:00:46,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-26 01:00:46,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322794889] [2022-11-26 01:00:46,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:00:46,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 01:00:46,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:00:46,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 01:00:46,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-26 01:00:46,143 INFO L87 Difference]: Start difference. First operand 13172 states and 51112 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:47,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:00:47,083 INFO L93 Difference]: Finished difference Result 17790 states and 67093 transitions. [2022-11-26 01:00:47,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-26 01:00:47,084 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:00:47,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:00:47,164 INFO L225 Difference]: With dead ends: 17790 [2022-11-26 01:00:47,164 INFO L226 Difference]: Without dead ends: 17724 [2022-11-26 01:00:47,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-11-26 01:00:47,166 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 164 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 01:00:47,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 0 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 01:00:47,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17724 states. [2022-11-26 01:00:47,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17724 to 12968. [2022-11-26 01:00:47,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12968 states, 12967 states have (on average 3.8684352587337085) internal successors, (50162), 12967 states have internal predecessors, (50162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:47,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12968 states to 12968 states and 50162 transitions. [2022-11-26 01:00:47,822 INFO L78 Accepts]: Start accepts. Automaton has 12968 states and 50162 transitions. Word has length 38 [2022-11-26 01:00:47,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:00:47,822 INFO L495 AbstractCegarLoop]: Abstraction has 12968 states and 50162 transitions. [2022-11-26 01:00:47,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:47,823 INFO L276 IsEmpty]: Start isEmpty. Operand 12968 states and 50162 transitions. [2022-11-26 01:00:47,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:00:47,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:00:47,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:00:47,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-26 01:00:47,857 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:00:47,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:00:47,858 INFO L85 PathProgramCache]: Analyzing trace with hash -332110484, now seen corresponding path program 9 times [2022-11-26 01:00:47,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:00:47,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560804032] [2022-11-26 01:00:47,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:47,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:00:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:48,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:48,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:00:48,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560804032] [2022-11-26 01:00:48,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560804032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:00:48,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:00:48,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 01:00:48,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250182209] [2022-11-26 01:00:48,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:00:48,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 01:00:48,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:00:48,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 01:00:48,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 01:00:48,427 INFO L87 Difference]: Start difference. First operand 12968 states and 50162 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:49,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:00:49,505 INFO L93 Difference]: Finished difference Result 17960 states and 67770 transitions. [2022-11-26 01:00:49,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-26 01:00:49,506 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:00:49,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:00:49,571 INFO L225 Difference]: With dead ends: 17960 [2022-11-26 01:00:49,571 INFO L226 Difference]: Without dead ends: 17786 [2022-11-26 01:00:49,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2022-11-26 01:00:49,572 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 194 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-26 01:00:49,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 0 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-26 01:00:49,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17786 states. [2022-11-26 01:00:49,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17786 to 13446. [2022-11-26 01:00:50,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13446 states, 13445 states have (on average 3.866790628486426) internal successors, (51989), 13445 states have internal predecessors, (51989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:50,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13446 states to 13446 states and 51989 transitions. [2022-11-26 01:00:50,057 INFO L78 Accepts]: Start accepts. Automaton has 13446 states and 51989 transitions. Word has length 38 [2022-11-26 01:00:50,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:00:50,057 INFO L495 AbstractCegarLoop]: Abstraction has 13446 states and 51989 transitions. [2022-11-26 01:00:50,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:50,058 INFO L276 IsEmpty]: Start isEmpty. Operand 13446 states and 51989 transitions. [2022-11-26 01:00:50,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:00:50,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:00:50,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:00:50,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-26 01:00:50,095 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:00:50,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:00:50,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1992130856, now seen corresponding path program 10 times [2022-11-26 01:00:50,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:00:50,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69786499] [2022-11-26 01:00:50,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:50,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:00:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:50,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:50,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:00:50,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69786499] [2022-11-26 01:00:50,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69786499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:00:50,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:00:50,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 01:00:50,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113151633] [2022-11-26 01:00:50,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:00:50,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 01:00:50,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:00:50,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 01:00:50,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-26 01:00:50,506 INFO L87 Difference]: Start difference. First operand 13446 states and 51989 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:51,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:00:51,520 INFO L93 Difference]: Finished difference Result 19248 states and 71814 transitions. [2022-11-26 01:00:51,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 01:00:51,520 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:00:51,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:00:51,597 INFO L225 Difference]: With dead ends: 19248 [2022-11-26 01:00:51,597 INFO L226 Difference]: Without dead ends: 19232 [2022-11-26 01:00:51,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-26 01:00:51,598 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 139 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-26 01:00:51,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 0 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-26 01:00:51,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19232 states. [2022-11-26 01:00:52,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19232 to 13524. [2022-11-26 01:00:52,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13524 states, 13523 states have (on average 3.8607557494638765) internal successors, (52209), 13523 states have internal predecessors, (52209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:52,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13524 states to 13524 states and 52209 transitions. [2022-11-26 01:00:52,187 INFO L78 Accepts]: Start accepts. Automaton has 13524 states and 52209 transitions. Word has length 38 [2022-11-26 01:00:52,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:00:52,187 INFO L495 AbstractCegarLoop]: Abstraction has 13524 states and 52209 transitions. [2022-11-26 01:00:52,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:52,187 INFO L276 IsEmpty]: Start isEmpty. Operand 13524 states and 52209 transitions. [2022-11-26 01:00:52,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:00:52,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:00:52,230 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:00:52,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-26 01:00:52,231 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:00:52,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:00:52,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1864942192, now seen corresponding path program 11 times [2022-11-26 01:00:52,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:00:52,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604419800] [2022-11-26 01:00:52,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:52,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:00:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:52,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:52,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:00:52,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604419800] [2022-11-26 01:00:52,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604419800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:00:52,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:00:52,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-26 01:00:52,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888398162] [2022-11-26 01:00:52,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:00:52,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 01:00:52,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:00:52,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 01:00:52,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-26 01:00:52,698 INFO L87 Difference]: Start difference. First operand 13524 states and 52209 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:53,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:00:53,575 INFO L93 Difference]: Finished difference Result 18758 states and 70331 transitions. [2022-11-26 01:00:53,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-26 01:00:53,575 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:00:53,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:00:53,638 INFO L225 Difference]: With dead ends: 18758 [2022-11-26 01:00:53,639 INFO L226 Difference]: Without dead ends: 18714 [2022-11-26 01:00:53,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-11-26 01:00:53,639 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 144 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 01:00:53,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 0 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 01:00:53,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18714 states. [2022-11-26 01:00:54,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18714 to 12418. [2022-11-26 01:00:54,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12418 states, 12417 states have (on average 3.8726745590722396) internal successors, (48087), 12417 states have internal predecessors, (48087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:54,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12418 states to 12418 states and 48087 transitions. [2022-11-26 01:00:54,079 INFO L78 Accepts]: Start accepts. Automaton has 12418 states and 48087 transitions. Word has length 38 [2022-11-26 01:00:54,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:00:54,079 INFO L495 AbstractCegarLoop]: Abstraction has 12418 states and 48087 transitions. [2022-11-26 01:00:54,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:54,079 INFO L276 IsEmpty]: Start isEmpty. Operand 12418 states and 48087 transitions. [2022-11-26 01:00:54,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:00:54,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:00:54,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:00:54,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-26 01:00:54,104 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:00:54,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:00:54,104 INFO L85 PathProgramCache]: Analyzing trace with hash -767758130, now seen corresponding path program 12 times [2022-11-26 01:00:54,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:00:54,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586874710] [2022-11-26 01:00:54,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:54,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:00:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:54,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:54,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:00:54,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586874710] [2022-11-26 01:00:54,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586874710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:00:54,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:00:54,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 01:00:54,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458275304] [2022-11-26 01:00:54,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:00:54,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 01:00:54,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:00:54,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 01:00:54,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 01:00:54,487 INFO L87 Difference]: Start difference. First operand 12418 states and 48087 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:55,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:00:55,677 INFO L93 Difference]: Finished difference Result 18064 states and 67706 transitions. [2022-11-26 01:00:55,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-26 01:00:55,677 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:00:55,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:00:55,734 INFO L225 Difference]: With dead ends: 18064 [2022-11-26 01:00:55,734 INFO L226 Difference]: Without dead ends: 17962 [2022-11-26 01:00:55,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2022-11-26 01:00:55,735 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 199 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 01:00:55,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 0 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 01:00:55,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17962 states. [2022-11-26 01:00:56,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17962 to 12968. [2022-11-26 01:00:56,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12968 states, 12967 states have (on average 3.8721369630600755) internal successors, (50210), 12967 states have internal predecessors, (50210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:56,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12968 states to 12968 states and 50210 transitions. [2022-11-26 01:00:56,108 INFO L78 Accepts]: Start accepts. Automaton has 12968 states and 50210 transitions. Word has length 38 [2022-11-26 01:00:56,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:00:56,108 INFO L495 AbstractCegarLoop]: Abstraction has 12968 states and 50210 transitions. [2022-11-26 01:00:56,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:56,109 INFO L276 IsEmpty]: Start isEmpty. Operand 12968 states and 50210 transitions. [2022-11-26 01:00:56,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:00:56,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:00:56,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:00:56,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-26 01:00:56,152 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:00:56,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:00:56,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1179167066, now seen corresponding path program 13 times [2022-11-26 01:00:56,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:00:56,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664077231] [2022-11-26 01:00:56,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:56,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:00:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:56,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:56,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:00:56,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664077231] [2022-11-26 01:00:56,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664077231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:00:56,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:00:56,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 01:00:56,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701388769] [2022-11-26 01:00:56,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:00:56,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 01:00:56,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:00:56,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 01:00:56,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-26 01:00:56,703 INFO L87 Difference]: Start difference. First operand 12968 states and 50210 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:57,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:00:57,369 INFO L93 Difference]: Finished difference Result 21802 states and 80230 transitions. [2022-11-26 01:00:57,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 01:00:57,369 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:00:57,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:00:57,465 INFO L225 Difference]: With dead ends: 21802 [2022-11-26 01:00:57,466 INFO L226 Difference]: Without dead ends: 21752 [2022-11-26 01:00:57,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-26 01:00:57,467 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 120 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 01:00:57,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 0 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 01:00:57,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21752 states. [2022-11-26 01:00:57,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21752 to 12856. [2022-11-26 01:00:57,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12856 states, 12855 states have (on average 3.847218980941268) internal successors, (49456), 12855 states have internal predecessors, (49456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:58,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12856 states to 12856 states and 49456 transitions. [2022-11-26 01:00:58,272 INFO L78 Accepts]: Start accepts. Automaton has 12856 states and 49456 transitions. Word has length 38 [2022-11-26 01:00:58,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:00:58,273 INFO L495 AbstractCegarLoop]: Abstraction has 12856 states and 49456 transitions. [2022-11-26 01:00:58,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:58,274 INFO L276 IsEmpty]: Start isEmpty. Operand 12856 states and 49456 transitions. [2022-11-26 01:00:58,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:00:58,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:00:58,305 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:00:58,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-26 01:00:58,305 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:00:58,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:00:58,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1476280218, now seen corresponding path program 14 times [2022-11-26 01:00:58,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:00:58,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924820473] [2022-11-26 01:00:58,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:58,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:00:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:58,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:58,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:00:58,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924820473] [2022-11-26 01:00:58,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924820473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:00:58,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:00:58,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 01:00:58,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828358565] [2022-11-26 01:00:58,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:00:58,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 01:00:58,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:00:58,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 01:00:58,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-26 01:00:58,677 INFO L87 Difference]: Start difference. First operand 12856 states and 49456 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:59,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:00:59,487 INFO L93 Difference]: Finished difference Result 22978 states and 83025 transitions. [2022-11-26 01:00:59,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 01:00:59,487 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:00:59,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:00:59,586 INFO L225 Difference]: With dead ends: 22978 [2022-11-26 01:00:59,586 INFO L226 Difference]: Without dead ends: 22884 [2022-11-26 01:00:59,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-11-26 01:00:59,587 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 163 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 01:00:59,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 0 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 01:00:59,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22884 states. [2022-11-26 01:01:00,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22884 to 14632. [2022-11-26 01:01:00,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14632 states, 14631 states have (on average 3.7819697901715537) internal successors, (55334), 14631 states have internal predecessors, (55334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:00,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14632 states to 14632 states and 55334 transitions. [2022-11-26 01:01:00,159 INFO L78 Accepts]: Start accepts. Automaton has 14632 states and 55334 transitions. Word has length 38 [2022-11-26 01:01:00,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:00,159 INFO L495 AbstractCegarLoop]: Abstraction has 14632 states and 55334 transitions. [2022-11-26 01:01:00,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:00,159 INFO L276 IsEmpty]: Start isEmpty. Operand 14632 states and 55334 transitions. [2022-11-26 01:01:00,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:00,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:00,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:00,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-26 01:01:00,187 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:00,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:00,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1020083106, now seen corresponding path program 15 times [2022-11-26 01:01:00,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:00,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919311300] [2022-11-26 01:01:00,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:00,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:00,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:00,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:00,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919311300] [2022-11-26 01:01:00,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919311300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:00,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:00,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 01:01:00,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361984318] [2022-11-26 01:01:00,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:00,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 01:01:00,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:00,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 01:01:00,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 01:01:00,588 INFO L87 Difference]: Start difference. First operand 14632 states and 55334 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:01,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:01,799 INFO L93 Difference]: Finished difference Result 23794 states and 85259 transitions. [2022-11-26 01:01:01,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-26 01:01:01,799 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:01,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:01,860 INFO L225 Difference]: With dead ends: 23794 [2022-11-26 01:01:01,860 INFO L226 Difference]: Without dead ends: 23468 [2022-11-26 01:01:01,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2022-11-26 01:01:01,861 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 217 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:01,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 0 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-26 01:01:01,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23468 states. [2022-11-26 01:01:02,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23468 to 14720. [2022-11-26 01:01:02,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14720 states, 14719 states have (on average 3.7541273184319586) internal successors, (55257), 14719 states have internal predecessors, (55257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:02,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14720 states to 14720 states and 55257 transitions. [2022-11-26 01:01:02,232 INFO L78 Accepts]: Start accepts. Automaton has 14720 states and 55257 transitions. Word has length 38 [2022-11-26 01:01:02,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:02,232 INFO L495 AbstractCegarLoop]: Abstraction has 14720 states and 55257 transitions. [2022-11-26 01:01:02,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:02,232 INFO L276 IsEmpty]: Start isEmpty. Operand 14720 states and 55257 transitions. [2022-11-26 01:01:02,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:02,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:02,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:02,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-26 01:01:02,259 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:02,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:02,260 INFO L85 PathProgramCache]: Analyzing trace with hash 43679224, now seen corresponding path program 16 times [2022-11-26 01:01:02,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:02,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342774738] [2022-11-26 01:01:02,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:02,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:02,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:02,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:02,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342774738] [2022-11-26 01:01:02,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342774738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:02,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:02,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 01:01:02,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392032993] [2022-11-26 01:01:02,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:02,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 01:01:02,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:02,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 01:01:02,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-26 01:01:02,878 INFO L87 Difference]: Start difference. First operand 14720 states and 55257 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:03,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:03,447 INFO L93 Difference]: Finished difference Result 27910 states and 97468 transitions. [2022-11-26 01:01:03,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 01:01:03,448 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:03,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:03,576 INFO L225 Difference]: With dead ends: 27910 [2022-11-26 01:01:03,577 INFO L226 Difference]: Without dead ends: 27756 [2022-11-26 01:01:03,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-26 01:01:03,578 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 90 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:03,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 0 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 01:01:03,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27756 states. [2022-11-26 01:01:04,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27756 to 19620. [2022-11-26 01:01:04,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19620 states, 19619 states have (on average 3.5874407462154037) internal successors, (70382), 19619 states have internal predecessors, (70382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:04,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19620 states to 19620 states and 70382 transitions. [2022-11-26 01:01:04,401 INFO L78 Accepts]: Start accepts. Automaton has 19620 states and 70382 transitions. Word has length 38 [2022-11-26 01:01:04,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:04,401 INFO L495 AbstractCegarLoop]: Abstraction has 19620 states and 70382 transitions. [2022-11-26 01:01:04,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:04,402 INFO L276 IsEmpty]: Start isEmpty. Operand 19620 states and 70382 transitions. [2022-11-26 01:01:04,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:04,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:04,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:04,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-26 01:01:04,437 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:04,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:04,437 INFO L85 PathProgramCache]: Analyzing trace with hash -303076662, now seen corresponding path program 17 times [2022-11-26 01:01:04,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:04,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671682816] [2022-11-26 01:01:04,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:04,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:04,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:04,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:04,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671682816] [2022-11-26 01:01:04,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671682816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:04,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:04,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 01:01:04,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872111649] [2022-11-26 01:01:04,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:04,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 01:01:04,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:04,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 01:01:04,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-26 01:01:04,799 INFO L87 Difference]: Start difference. First operand 19620 states and 70382 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:05,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:05,563 INFO L93 Difference]: Finished difference Result 32780 states and 108780 transitions. [2022-11-26 01:01:05,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 01:01:05,564 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:05,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:05,681 INFO L225 Difference]: With dead ends: 32780 [2022-11-26 01:01:05,681 INFO L226 Difference]: Without dead ends: 32106 [2022-11-26 01:01:05,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-11-26 01:01:05,682 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 155 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:05,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 0 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-26 01:01:05,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32106 states. [2022-11-26 01:01:06,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32106 to 21510. [2022-11-26 01:01:06,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21510 states, 21509 states have (on average 3.4525547445255476) internal successors, (74261), 21509 states have internal predecessors, (74261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:06,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21510 states to 21510 states and 74261 transitions. [2022-11-26 01:01:06,496 INFO L78 Accepts]: Start accepts. Automaton has 21510 states and 74261 transitions. Word has length 38 [2022-11-26 01:01:06,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:06,496 INFO L495 AbstractCegarLoop]: Abstraction has 21510 states and 74261 transitions. [2022-11-26 01:01:06,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:06,497 INFO L276 IsEmpty]: Start isEmpty. Operand 21510 states and 74261 transitions. [2022-11-26 01:01:06,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:06,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:06,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:06,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-26 01:01:06,540 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:06,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:06,541 INFO L85 PathProgramCache]: Analyzing trace with hash -534785988, now seen corresponding path program 18 times [2022-11-26 01:01:06,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:06,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587451161] [2022-11-26 01:01:06,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:06,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:07,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:07,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587451161] [2022-11-26 01:01:07,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587451161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:07,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:07,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-26 01:01:07,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222513578] [2022-11-26 01:01:07,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:07,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 01:01:07,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:07,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 01:01:07,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-26 01:01:07,110 INFO L87 Difference]: Start difference. First operand 21510 states and 74261 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:07,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:07,959 INFO L93 Difference]: Finished difference Result 29934 states and 98170 transitions. [2022-11-26 01:01:07,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-26 01:01:07,960 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:07,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:08,057 INFO L225 Difference]: With dead ends: 29934 [2022-11-26 01:01:08,057 INFO L226 Difference]: Without dead ends: 29506 [2022-11-26 01:01:08,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-11-26 01:01:08,058 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 169 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:08,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 0 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 01:01:08,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29506 states. [2022-11-26 01:01:08,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29506 to 20166. [2022-11-26 01:01:08,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20166 states, 20165 states have (on average 3.442796925365733) internal successors, (69424), 20165 states have internal predecessors, (69424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:08,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20166 states to 20166 states and 69424 transitions. [2022-11-26 01:01:08,813 INFO L78 Accepts]: Start accepts. Automaton has 20166 states and 69424 transitions. Word has length 38 [2022-11-26 01:01:08,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:08,813 INFO L495 AbstractCegarLoop]: Abstraction has 20166 states and 69424 transitions. [2022-11-26 01:01:08,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:08,813 INFO L276 IsEmpty]: Start isEmpty. Operand 20166 states and 69424 transitions. [2022-11-26 01:01:08,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:08,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:08,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:08,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-26 01:01:08,860 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:08,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:08,860 INFO L85 PathProgramCache]: Analyzing trace with hash 156601270, now seen corresponding path program 19 times [2022-11-26 01:01:08,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:08,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762905904] [2022-11-26 01:01:08,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:08,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:09,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:09,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:09,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762905904] [2022-11-26 01:01:09,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762905904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:09,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:09,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 01:01:09,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721597325] [2022-11-26 01:01:09,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:09,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 01:01:09,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:09,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 01:01:09,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 01:01:09,410 INFO L87 Difference]: Start difference. First operand 20166 states and 69424 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:10,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:10,526 INFO L93 Difference]: Finished difference Result 29188 states and 95184 transitions. [2022-11-26 01:01:10,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-26 01:01:10,527 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:10,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:10,645 INFO L225 Difference]: With dead ends: 29188 [2022-11-26 01:01:10,645 INFO L226 Difference]: Without dead ends: 28734 [2022-11-26 01:01:10,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2022-11-26 01:01:10,646 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 214 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:10,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 0 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-26 01:01:10,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28734 states. [2022-11-26 01:01:11,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28734 to 21286. [2022-11-26 01:01:11,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21286 states, 21285 states have (on average 3.4313366220342965) internal successors, (73036), 21285 states have internal predecessors, (73036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:11,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21286 states to 21286 states and 73036 transitions. [2022-11-26 01:01:11,422 INFO L78 Accepts]: Start accepts. Automaton has 21286 states and 73036 transitions. Word has length 38 [2022-11-26 01:01:11,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:11,422 INFO L495 AbstractCegarLoop]: Abstraction has 21286 states and 73036 transitions. [2022-11-26 01:01:11,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:11,422 INFO L276 IsEmpty]: Start isEmpty. Operand 21286 states and 73036 transitions. [2022-11-26 01:01:11,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:11,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:11,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:11,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-26 01:01:11,459 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:11,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:11,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1676529768, now seen corresponding path program 20 times [2022-11-26 01:01:11,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:11,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129429697] [2022-11-26 01:01:11,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:11,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:11,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:11,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:11,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129429697] [2022-11-26 01:01:11,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129429697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:11,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:11,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-26 01:01:11,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223899986] [2022-11-26 01:01:11,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:11,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 01:01:11,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:11,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 01:01:11,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-26 01:01:11,805 INFO L87 Difference]: Start difference. First operand 21286 states and 73036 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:12,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:12,994 INFO L93 Difference]: Finished difference Result 27086 states and 89753 transitions. [2022-11-26 01:01:12,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-26 01:01:12,995 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:12,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:13,063 INFO L225 Difference]: With dead ends: 27086 [2022-11-26 01:01:13,063 INFO L226 Difference]: Without dead ends: 27066 [2022-11-26 01:01:13,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=225, Unknown=0, NotChecked=0, Total=342 [2022-11-26 01:01:13,064 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 156 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:13,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 0 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 01:01:13,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27066 states. [2022-11-26 01:01:13,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27066 to 21282. [2022-11-26 01:01:13,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21282 states, 21281 states have (on average 3.4282223579719) internal successors, (72956), 21281 states have internal predecessors, (72956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:13,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21282 states to 21282 states and 72956 transitions. [2022-11-26 01:01:13,539 INFO L78 Accepts]: Start accepts. Automaton has 21282 states and 72956 transitions. Word has length 38 [2022-11-26 01:01:13,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:13,539 INFO L495 AbstractCegarLoop]: Abstraction has 21282 states and 72956 transitions. [2022-11-26 01:01:13,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:13,539 INFO L276 IsEmpty]: Start isEmpty. Operand 21282 states and 72956 transitions. [2022-11-26 01:01:13,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:13,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:13,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:13,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-26 01:01:13,581 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:13,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:13,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1836967540, now seen corresponding path program 21 times [2022-11-26 01:01:13,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:13,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260043113] [2022-11-26 01:01:13,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:13,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:14,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:14,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:14,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260043113] [2022-11-26 01:01:14,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260043113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:14,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:14,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 01:01:14,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420995788] [2022-11-26 01:01:14,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:14,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 01:01:14,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:14,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 01:01:14,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-26 01:01:14,044 INFO L87 Difference]: Start difference. First operand 21282 states and 72956 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:15,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:15,113 INFO L93 Difference]: Finished difference Result 26944 states and 88766 transitions. [2022-11-26 01:01:15,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-26 01:01:15,113 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:15,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:15,182 INFO L225 Difference]: With dead ends: 26944 [2022-11-26 01:01:15,182 INFO L226 Difference]: Without dead ends: 26846 [2022-11-26 01:01:15,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=371, Unknown=0, NotChecked=0, Total=552 [2022-11-26 01:01:15,183 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 189 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:15,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 0 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-26 01:01:15,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26846 states. [2022-11-26 01:01:15,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26846 to 21222. [2022-11-26 01:01:15,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21222 states, 21221 states have (on average 3.4188775269779934) internal successors, (72552), 21221 states have internal predecessors, (72552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:15,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21222 states to 21222 states and 72552 transitions. [2022-11-26 01:01:15,799 INFO L78 Accepts]: Start accepts. Automaton has 21222 states and 72552 transitions. Word has length 38 [2022-11-26 01:01:15,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:15,800 INFO L495 AbstractCegarLoop]: Abstraction has 21222 states and 72552 transitions. [2022-11-26 01:01:15,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:15,800 INFO L276 IsEmpty]: Start isEmpty. Operand 21222 states and 72552 transitions. [2022-11-26 01:01:15,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:15,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:15,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:15,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-26 01:01:15,836 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:15,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:15,836 INFO L85 PathProgramCache]: Analyzing trace with hash -892383960, now seen corresponding path program 22 times [2022-11-26 01:01:15,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:15,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373694532] [2022-11-26 01:01:15,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:15,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:16,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:16,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:16,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373694532] [2022-11-26 01:01:16,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373694532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:16,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:16,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-26 01:01:16,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38137763] [2022-11-26 01:01:16,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:16,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-26 01:01:16,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:16,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-26 01:01:16,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-11-26 01:01:16,228 INFO L87 Difference]: Start difference. First operand 21222 states and 72552 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:17,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:17,353 INFO L93 Difference]: Finished difference Result 26368 states and 86990 transitions. [2022-11-26 01:01:17,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-26 01:01:17,353 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:17,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:17,420 INFO L225 Difference]: With dead ends: 26368 [2022-11-26 01:01:17,420 INFO L226 Difference]: Without dead ends: 26022 [2022-11-26 01:01:17,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=225, Invalid=477, Unknown=0, NotChecked=0, Total=702 [2022-11-26 01:01:17,421 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 217 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:17,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 0 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-26 01:01:17,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26022 states. [2022-11-26 01:01:18,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26022 to 20920. [2022-11-26 01:01:18,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20920 states, 20919 states have (on average 3.4001147282374875) internal successors, (71127), 20919 states have internal predecessors, (71127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:18,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20920 states to 20920 states and 71127 transitions. [2022-11-26 01:01:18,188 INFO L78 Accepts]: Start accepts. Automaton has 20920 states and 71127 transitions. Word has length 38 [2022-11-26 01:01:18,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:18,189 INFO L495 AbstractCegarLoop]: Abstraction has 20920 states and 71127 transitions. [2022-11-26 01:01:18,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:18,189 INFO L276 IsEmpty]: Start isEmpty. Operand 20920 states and 71127 transitions. [2022-11-26 01:01:18,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:18,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:18,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:18,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-26 01:01:18,238 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:18,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:18,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1399099388, now seen corresponding path program 23 times [2022-11-26 01:01:18,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:18,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582507788] [2022-11-26 01:01:18,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:18,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:18,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:18,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:18,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582507788] [2022-11-26 01:01:18,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582507788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:18,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:18,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-26 01:01:18,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261128380] [2022-11-26 01:01:18,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:18,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 01:01:18,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:18,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 01:01:18,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-26 01:01:18,721 INFO L87 Difference]: Start difference. First operand 20920 states and 71127 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:20,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:20,357 INFO L93 Difference]: Finished difference Result 26458 states and 87009 transitions. [2022-11-26 01:01:20,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-26 01:01:20,358 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:20,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:20,422 INFO L225 Difference]: With dead ends: 26458 [2022-11-26 01:01:20,422 INFO L226 Difference]: Without dead ends: 25790 [2022-11-26 01:01:20,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=329, Invalid=727, Unknown=0, NotChecked=0, Total=1056 [2022-11-26 01:01:20,423 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 243 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:20,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 0 Invalid, 1529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-26 01:01:20,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25790 states. [2022-11-26 01:01:20,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25790 to 21232. [2022-11-26 01:01:20,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21232 states, 21231 states have (on average 3.4006405727473976) internal successors, (72199), 21231 states have internal predecessors, (72199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:20,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21232 states to 21232 states and 72199 transitions. [2022-11-26 01:01:20,870 INFO L78 Accepts]: Start accepts. Automaton has 21232 states and 72199 transitions. Word has length 38 [2022-11-26 01:01:20,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:20,870 INFO L495 AbstractCegarLoop]: Abstraction has 21232 states and 72199 transitions. [2022-11-26 01:01:20,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:20,871 INFO L276 IsEmpty]: Start isEmpty. Operand 21232 states and 72199 transitions. [2022-11-26 01:01:20,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:20,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:20,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:20,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-26 01:01:20,907 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:20,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:20,907 INFO L85 PathProgramCache]: Analyzing trace with hash 811682242, now seen corresponding path program 24 times [2022-11-26 01:01:20,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:20,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376822243] [2022-11-26 01:01:20,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:20,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:21,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:21,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:21,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376822243] [2022-11-26 01:01:21,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376822243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:21,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:21,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-26 01:01:21,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046837377] [2022-11-26 01:01:21,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:21,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 01:01:21,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:21,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 01:01:21,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-26 01:01:21,446 INFO L87 Difference]: Start difference. First operand 21232 states and 72199 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:22,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:22,382 INFO L93 Difference]: Finished difference Result 28818 states and 93725 transitions. [2022-11-26 01:01:22,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-26 01:01:22,382 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:22,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:22,454 INFO L225 Difference]: With dead ends: 28818 [2022-11-26 01:01:22,454 INFO L226 Difference]: Without dead ends: 28786 [2022-11-26 01:01:22,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=225, Unknown=0, NotChecked=0, Total=342 [2022-11-26 01:01:22,455 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 145 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:22,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 0 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-26 01:01:22,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28786 states. [2022-11-26 01:01:22,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28786 to 21212. [2022-11-26 01:01:22,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21212 states, 21211 states have (on average 3.3988967988307954) internal successors, (72094), 21211 states have internal predecessors, (72094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:23,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21212 states to 21212 states and 72094 transitions. [2022-11-26 01:01:23,227 INFO L78 Accepts]: Start accepts. Automaton has 21212 states and 72094 transitions. Word has length 38 [2022-11-26 01:01:23,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:23,227 INFO L495 AbstractCegarLoop]: Abstraction has 21212 states and 72094 transitions. [2022-11-26 01:01:23,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:23,228 INFO L276 IsEmpty]: Start isEmpty. Operand 21212 states and 72094 transitions. [2022-11-26 01:01:23,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:23,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:23,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:23,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-26 01:01:23,266 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:23,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:23,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1249576490, now seen corresponding path program 25 times [2022-11-26 01:01:23,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:23,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547095042] [2022-11-26 01:01:23,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:23,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:23,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:23,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:23,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547095042] [2022-11-26 01:01:23,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547095042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:23,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:23,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 01:01:23,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175209084] [2022-11-26 01:01:23,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:23,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 01:01:23,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:23,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 01:01:23,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-26 01:01:23,620 INFO L87 Difference]: Start difference. First operand 21212 states and 72094 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:24,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:24,657 INFO L93 Difference]: Finished difference Result 28672 states and 92835 transitions. [2022-11-26 01:01:24,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-26 01:01:24,658 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:24,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:24,728 INFO L225 Difference]: With dead ends: 28672 [2022-11-26 01:01:24,728 INFO L226 Difference]: Without dead ends: 28588 [2022-11-26 01:01:24,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=371, Unknown=0, NotChecked=0, Total=552 [2022-11-26 01:01:24,729 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 169 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:24,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 0 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-26 01:01:24,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28588 states. [2022-11-26 01:01:25,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28588 to 20968. [2022-11-26 01:01:25,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20968 states, 20967 states have (on average 3.3981971669766775) internal successors, (71250), 20967 states have internal predecessors, (71250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:25,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20968 states to 20968 states and 71250 transitions. [2022-11-26 01:01:25,453 INFO L78 Accepts]: Start accepts. Automaton has 20968 states and 71250 transitions. Word has length 38 [2022-11-26 01:01:25,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:25,453 INFO L495 AbstractCegarLoop]: Abstraction has 20968 states and 71250 transitions. [2022-11-26 01:01:25,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:25,453 INFO L276 IsEmpty]: Start isEmpty. Operand 20968 states and 71250 transitions. [2022-11-26 01:01:25,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:25,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:25,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:25,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-26 01:01:25,502 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:25,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:25,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1948206744, now seen corresponding path program 26 times [2022-11-26 01:01:25,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:25,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064316435] [2022-11-26 01:01:25,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:25,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:25,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:25,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:25,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064316435] [2022-11-26 01:01:25,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064316435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:25,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:25,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-26 01:01:25,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321853549] [2022-11-26 01:01:25,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:25,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-26 01:01:25,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:25,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-26 01:01:25,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-11-26 01:01:25,940 INFO L87 Difference]: Start difference. First operand 20968 states and 71250 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:27,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:27,208 INFO L93 Difference]: Finished difference Result 27162 states and 88638 transitions. [2022-11-26 01:01:27,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-26 01:01:27,209 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:27,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:27,292 INFO L225 Difference]: With dead ends: 27162 [2022-11-26 01:01:27,292 INFO L226 Difference]: Without dead ends: 26930 [2022-11-26 01:01:27,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=225, Invalid=477, Unknown=0, NotChecked=0, Total=702 [2022-11-26 01:01:27,292 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 193 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:27,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 0 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 01:01:27,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26930 states. [2022-11-26 01:01:27,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26930 to 19900. [2022-11-26 01:01:27,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19900 states, 19899 states have (on average 3.3913261972963467) internal successors, (67484), 19899 states have internal predecessors, (67484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:27,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19900 states to 19900 states and 67484 transitions. [2022-11-26 01:01:27,971 INFO L78 Accepts]: Start accepts. Automaton has 19900 states and 67484 transitions. Word has length 38 [2022-11-26 01:01:27,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:27,972 INFO L495 AbstractCegarLoop]: Abstraction has 19900 states and 67484 transitions. [2022-11-26 01:01:27,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:27,972 INFO L276 IsEmpty]: Start isEmpty. Operand 19900 states and 67484 transitions. [2022-11-26 01:01:28,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:28,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:28,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:28,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-26 01:01:28,006 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:28,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:28,006 INFO L85 PathProgramCache]: Analyzing trace with hash 778924250, now seen corresponding path program 27 times [2022-11-26 01:01:28,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:28,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273231412] [2022-11-26 01:01:28,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:28,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:28,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:28,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:28,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273231412] [2022-11-26 01:01:28,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273231412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:28,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:28,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-26 01:01:28,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271976347] [2022-11-26 01:01:28,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:28,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 01:01:28,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:28,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 01:01:28,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-26 01:01:28,386 INFO L87 Difference]: Start difference. First operand 19900 states and 67484 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:29,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:29,746 INFO L93 Difference]: Finished difference Result 26538 states and 86521 transitions. [2022-11-26 01:01:29,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-26 01:01:29,747 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:29,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:29,812 INFO L225 Difference]: With dead ends: 26538 [2022-11-26 01:01:29,813 INFO L226 Difference]: Without dead ends: 26302 [2022-11-26 01:01:29,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=329, Invalid=727, Unknown=0, NotChecked=0, Total=1056 [2022-11-26 01:01:29,813 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 239 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:29,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 0 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 01:01:30,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26302 states. [2022-11-26 01:01:30,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26302 to 20504. [2022-11-26 01:01:30,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20504 states, 20503 states have (on average 3.389845388479735) internal successors, (69502), 20503 states have internal predecessors, (69502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:30,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20504 states to 20504 states and 69502 transitions. [2022-11-26 01:01:30,409 INFO L78 Accepts]: Start accepts. Automaton has 20504 states and 69502 transitions. Word has length 38 [2022-11-26 01:01:30,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:30,409 INFO L495 AbstractCegarLoop]: Abstraction has 20504 states and 69502 transitions. [2022-11-26 01:01:30,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:30,409 INFO L276 IsEmpty]: Start isEmpty. Operand 20504 states and 69502 transitions. [2022-11-26 01:01:30,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:30,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:30,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:30,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-26 01:01:30,444 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:30,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:30,444 INFO L85 PathProgramCache]: Analyzing trace with hash 256826172, now seen corresponding path program 28 times [2022-11-26 01:01:30,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:30,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366581869] [2022-11-26 01:01:30,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:30,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:30,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:30,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:30,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366581869] [2022-11-26 01:01:30,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366581869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:30,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:30,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-26 01:01:30,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036775005] [2022-11-26 01:01:30,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:30,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-26 01:01:30,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:30,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-26 01:01:30,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-11-26 01:01:30,815 INFO L87 Difference]: Start difference. First operand 20504 states and 69502 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:32,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:32,226 INFO L93 Difference]: Finished difference Result 27680 states and 89531 transitions. [2022-11-26 01:01:32,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-26 01:01:32,227 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:32,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:32,321 INFO L225 Difference]: With dead ends: 27680 [2022-11-26 01:01:32,321 INFO L226 Difference]: Without dead ends: 27374 [2022-11-26 01:01:32,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=225, Invalid=477, Unknown=0, NotChecked=0, Total=702 [2022-11-26 01:01:32,322 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 242 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:32,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 0 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-26 01:01:32,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27374 states. [2022-11-26 01:01:32,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27374 to 19404. [2022-11-26 01:01:32,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19404 states, 19403 states have (on average 3.3723650981806936) internal successors, (65434), 19403 states have internal predecessors, (65434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:32,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19404 states to 19404 states and 65434 transitions. [2022-11-26 01:01:32,874 INFO L78 Accepts]: Start accepts. Automaton has 19404 states and 65434 transitions. Word has length 38 [2022-11-26 01:01:32,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:32,874 INFO L495 AbstractCegarLoop]: Abstraction has 19404 states and 65434 transitions. [2022-11-26 01:01:32,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:32,874 INFO L276 IsEmpty]: Start isEmpty. Operand 19404 states and 65434 transitions. [2022-11-26 01:01:32,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:32,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:32,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:32,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-26 01:01:32,907 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:32,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:32,908 INFO L85 PathProgramCache]: Analyzing trace with hash 237148490, now seen corresponding path program 29 times [2022-11-26 01:01:32,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:32,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122858969] [2022-11-26 01:01:32,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:32,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:33,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:33,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:33,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122858969] [2022-11-26 01:01:33,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122858969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:33,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:33,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-26 01:01:33,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094574571] [2022-11-26 01:01:33,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:33,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 01:01:33,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:33,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 01:01:33,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-26 01:01:33,291 INFO L87 Difference]: Start difference. First operand 19404 states and 65434 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:35,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:35,056 INFO L93 Difference]: Finished difference Result 26318 states and 84873 transitions. [2022-11-26 01:01:35,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-26 01:01:35,057 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:35,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:35,137 INFO L225 Difference]: With dead ends: 26318 [2022-11-26 01:01:35,137 INFO L226 Difference]: Without dead ends: 26026 [2022-11-26 01:01:35,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=329, Invalid=727, Unknown=0, NotChecked=0, Total=1056 [2022-11-26 01:01:35,138 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 302 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:35,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 0 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-26 01:01:35,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26026 states. [2022-11-26 01:01:35,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26026 to 19798. [2022-11-26 01:01:35,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19798 states, 19797 states have (on average 3.3789968176996514) internal successors, (66894), 19797 states have internal predecessors, (66894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:35,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19798 states to 19798 states and 66894 transitions. [2022-11-26 01:01:35,632 INFO L78 Accepts]: Start accepts. Automaton has 19798 states and 66894 transitions. Word has length 38 [2022-11-26 01:01:35,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:35,632 INFO L495 AbstractCegarLoop]: Abstraction has 19798 states and 66894 transitions. [2022-11-26 01:01:35,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:35,632 INFO L276 IsEmpty]: Start isEmpty. Operand 19798 states and 66894 transitions. [2022-11-26 01:01:35,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:35,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:35,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:35,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-26 01:01:35,666 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:35,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:35,667 INFO L85 PathProgramCache]: Analyzing trace with hash -696491086, now seen corresponding path program 30 times [2022-11-26 01:01:35,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:35,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787733649] [2022-11-26 01:01:35,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:35,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:36,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:36,066 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:36,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787733649] [2022-11-26 01:01:36,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787733649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:36,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:36,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 01:01:36,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932697571] [2022-11-26 01:01:36,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:36,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 01:01:36,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:36,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 01:01:36,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-26 01:01:36,068 INFO L87 Difference]: Start difference. First operand 19798 states and 66894 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:37,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:37,097 INFO L93 Difference]: Finished difference Result 29746 states and 94535 transitions. [2022-11-26 01:01:37,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-26 01:01:37,097 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:37,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:37,171 INFO L225 Difference]: With dead ends: 29746 [2022-11-26 01:01:37,171 INFO L226 Difference]: Without dead ends: 29582 [2022-11-26 01:01:37,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=371, Unknown=0, NotChecked=0, Total=552 [2022-11-26 01:01:37,172 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 188 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:37,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 0 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-26 01:01:37,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29582 states. [2022-11-26 01:01:37,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29582 to 19498. [2022-11-26 01:01:37,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19498 states, 19497 states have (on average 3.3740062573729293) internal successors, (65783), 19497 states have internal predecessors, (65783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:37,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19498 states to 19498 states and 65783 transitions. [2022-11-26 01:01:37,629 INFO L78 Accepts]: Start accepts. Automaton has 19498 states and 65783 transitions. Word has length 38 [2022-11-26 01:01:37,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:37,629 INFO L495 AbstractCegarLoop]: Abstraction has 19498 states and 65783 transitions. [2022-11-26 01:01:37,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:37,629 INFO L276 IsEmpty]: Start isEmpty. Operand 19498 states and 65783 transitions. [2022-11-26 01:01:37,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:37,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:37,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:37,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-26 01:01:37,662 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:37,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:37,662 INFO L85 PathProgramCache]: Analyzing trace with hash -5103828, now seen corresponding path program 31 times [2022-11-26 01:01:37,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:37,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654308660] [2022-11-26 01:01:37,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:37,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:38,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:38,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654308660] [2022-11-26 01:01:38,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654308660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:38,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:38,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-26 01:01:38,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904602314] [2022-11-26 01:01:38,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:38,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-26 01:01:38,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:38,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-26 01:01:38,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-11-26 01:01:38,126 INFO L87 Difference]: Start difference. First operand 19498 states and 65783 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:39,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:39,357 INFO L93 Difference]: Finished difference Result 27254 states and 87425 transitions. [2022-11-26 01:01:39,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-26 01:01:39,357 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:39,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:39,424 INFO L225 Difference]: With dead ends: 27254 [2022-11-26 01:01:39,424 INFO L226 Difference]: Without dead ends: 26950 [2022-11-26 01:01:39,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=225, Invalid=477, Unknown=0, NotChecked=0, Total=702 [2022-11-26 01:01:39,425 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 214 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:39,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 0 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 01:01:39,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26950 states. [2022-11-26 01:01:39,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26950 to 18312. [2022-11-26 01:01:39,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18312 states, 18311 states have (on average 3.363879635191961) internal successors, (61596), 18311 states have internal predecessors, (61596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:39,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18312 states to 18312 states and 61596 transitions. [2022-11-26 01:01:39,874 INFO L78 Accepts]: Start accepts. Automaton has 18312 states and 61596 transitions. Word has length 38 [2022-11-26 01:01:39,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:39,874 INFO L495 AbstractCegarLoop]: Abstraction has 18312 states and 61596 transitions. [2022-11-26 01:01:39,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:39,874 INFO L276 IsEmpty]: Start isEmpty. Operand 18312 states and 61596 transitions. [2022-11-26 01:01:39,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:39,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:39,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:39,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-26 01:01:39,994 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:39,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:39,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1806424274, now seen corresponding path program 32 times [2022-11-26 01:01:39,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:39,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805524818] [2022-11-26 01:01:39,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:39,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:40,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:40,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:40,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805524818] [2022-11-26 01:01:40,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805524818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:40,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:40,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-26 01:01:40,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238508023] [2022-11-26 01:01:40,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:40,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 01:01:40,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:40,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 01:01:40,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-26 01:01:40,348 INFO L87 Difference]: Start difference. First operand 18312 states and 61596 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:41,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:41,704 INFO L93 Difference]: Finished difference Result 25970 states and 83360 transitions. [2022-11-26 01:01:41,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-26 01:01:41,705 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:41,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:41,768 INFO L225 Difference]: With dead ends: 25970 [2022-11-26 01:01:41,768 INFO L226 Difference]: Without dead ends: 25512 [2022-11-26 01:01:41,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=329, Invalid=727, Unknown=0, NotChecked=0, Total=1056 [2022-11-26 01:01:41,768 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 280 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:41,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 0 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1412 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 01:01:41,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25512 states. [2022-11-26 01:01:42,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25512 to 18270. [2022-11-26 01:01:42,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18270 states, 18269 states have (on average 3.3863922491652527) internal successors, (61866), 18269 states have internal predecessors, (61866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:42,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18270 states to 18270 states and 61866 transitions. [2022-11-26 01:01:42,371 INFO L78 Accepts]: Start accepts. Automaton has 18270 states and 61866 transitions. Word has length 38 [2022-11-26 01:01:42,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:42,371 INFO L495 AbstractCegarLoop]: Abstraction has 18270 states and 61866 transitions. [2022-11-26 01:01:42,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:42,372 INFO L276 IsEmpty]: Start isEmpty. Operand 18270 states and 61866 transitions. [2022-11-26 01:01:42,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:42,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:42,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:42,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-26 01:01:42,402 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:42,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:42,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1154284288, now seen corresponding path program 33 times [2022-11-26 01:01:42,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:42,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124757816] [2022-11-26 01:01:42,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:42,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:42,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:42,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:42,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124757816] [2022-11-26 01:01:42,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124757816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:42,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:42,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 01:01:42,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960263816] [2022-11-26 01:01:42,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:42,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 01:01:42,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:42,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 01:01:42,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-26 01:01:42,685 INFO L87 Difference]: Start difference. First operand 18270 states and 61866 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:43,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:43,327 INFO L93 Difference]: Finished difference Result 32974 states and 101076 transitions. [2022-11-26 01:01:43,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 01:01:43,327 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:43,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:43,404 INFO L225 Difference]: With dead ends: 32974 [2022-11-26 01:01:43,404 INFO L226 Difference]: Without dead ends: 32144 [2022-11-26 01:01:43,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-26 01:01:43,405 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 107 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:43,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 0 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 01:01:43,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32144 states. [2022-11-26 01:01:43,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32144 to 23248. [2022-11-26 01:01:44,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23248 states, 23247 states have (on average 3.1548586914440575) internal successors, (73341), 23247 states have internal predecessors, (73341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:44,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23248 states to 23248 states and 73341 transitions. [2022-11-26 01:01:44,076 INFO L78 Accepts]: Start accepts. Automaton has 23248 states and 73341 transitions. Word has length 38 [2022-11-26 01:01:44,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:44,076 INFO L495 AbstractCegarLoop]: Abstraction has 23248 states and 73341 transitions. [2022-11-26 01:01:44,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:44,076 INFO L276 IsEmpty]: Start isEmpty. Operand 23248 states and 73341 transitions. [2022-11-26 01:01:44,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:44,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:44,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:44,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-26 01:01:44,115 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:44,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:44,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1785600250, now seen corresponding path program 34 times [2022-11-26 01:01:44,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:44,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522795282] [2022-11-26 01:01:44,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:44,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:44,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:44,429 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:44,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522795282] [2022-11-26 01:01:44,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522795282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:44,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:44,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 01:01:44,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718208546] [2022-11-26 01:01:44,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:44,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 01:01:44,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:44,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 01:01:44,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-26 01:01:44,431 INFO L87 Difference]: Start difference. First operand 23248 states and 73341 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:45,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:45,191 INFO L93 Difference]: Finished difference Result 37410 states and 107426 transitions. [2022-11-26 01:01:45,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 01:01:45,192 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:45,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:45,275 INFO L225 Difference]: With dead ends: 37410 [2022-11-26 01:01:45,275 INFO L226 Difference]: Without dead ends: 36194 [2022-11-26 01:01:45,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-11-26 01:01:45,276 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 147 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:45,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 0 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-26 01:01:45,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36194 states. [2022-11-26 01:01:45,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36194 to 23856. [2022-11-26 01:01:45,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23856 states, 23855 states have (on average 3.0079228673234124) internal successors, (71754), 23855 states have internal predecessors, (71754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:45,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23856 states to 23856 states and 71754 transitions. [2022-11-26 01:01:45,991 INFO L78 Accepts]: Start accepts. Automaton has 23856 states and 71754 transitions. Word has length 38 [2022-11-26 01:01:45,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:45,991 INFO L495 AbstractCegarLoop]: Abstraction has 23856 states and 71754 transitions. [2022-11-26 01:01:45,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:45,991 INFO L276 IsEmpty]: Start isEmpty. Operand 23856 states and 71754 transitions. [2022-11-26 01:01:46,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:46,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:46,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:46,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-26 01:01:46,028 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:46,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:46,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1878411118, now seen corresponding path program 35 times [2022-11-26 01:01:46,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:46,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741043056] [2022-11-26 01:01:46,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:46,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:46,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:46,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:46,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741043056] [2022-11-26 01:01:46,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741043056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:46,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:46,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 01:01:46,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566796094] [2022-11-26 01:01:46,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:46,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 01:01:46,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:46,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 01:01:46,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 01:01:46,342 INFO L87 Difference]: Start difference. First operand 23856 states and 71754 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:47,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:47,499 INFO L93 Difference]: Finished difference Result 37216 states and 104644 transitions. [2022-11-26 01:01:47,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-26 01:01:47,499 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:47,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:47,578 INFO L225 Difference]: With dead ends: 37216 [2022-11-26 01:01:47,578 INFO L226 Difference]: Without dead ends: 35354 [2022-11-26 01:01:47,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2022-11-26 01:01:47,579 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 209 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:47,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 0 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-26 01:01:47,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35354 states. [2022-11-26 01:01:48,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35354 to 23024. [2022-11-26 01:01:48,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23024 states, 23023 states have (on average 2.933327542023194) internal successors, (67534), 23023 states have internal predecessors, (67534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:48,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23024 states to 23024 states and 67534 transitions. [2022-11-26 01:01:48,397 INFO L78 Accepts]: Start accepts. Automaton has 23024 states and 67534 transitions. Word has length 38 [2022-11-26 01:01:48,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:48,397 INFO L495 AbstractCegarLoop]: Abstraction has 23024 states and 67534 transitions. [2022-11-26 01:01:48,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:48,397 INFO L276 IsEmpty]: Start isEmpty. Operand 23024 states and 67534 transitions. [2022-11-26 01:01:48,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:48,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:48,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:48,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-26 01:01:48,432 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:48,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:48,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1578805002, now seen corresponding path program 36 times [2022-11-26 01:01:48,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:48,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15312851] [2022-11-26 01:01:48,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:48,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:48,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:48,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:48,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15312851] [2022-11-26 01:01:48,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15312851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:48,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:48,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-26 01:01:48,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231753092] [2022-11-26 01:01:48,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:48,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 01:01:48,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:48,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 01:01:48,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-26 01:01:48,823 INFO L87 Difference]: Start difference. First operand 23024 states and 67534 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:50,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:50,760 INFO L93 Difference]: Finished difference Result 30550 states and 84899 transitions. [2022-11-26 01:01:50,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-26 01:01:50,761 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:50,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:50,836 INFO L225 Difference]: With dead ends: 30550 [2022-11-26 01:01:50,836 INFO L226 Difference]: Without dead ends: 29282 [2022-11-26 01:01:50,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=329, Invalid=727, Unknown=0, NotChecked=0, Total=1056 [2022-11-26 01:01:50,837 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 255 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1937 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:50,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 0 Invalid, 2034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1937 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-26 01:01:50,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29282 states. [2022-11-26 01:01:51,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29282 to 20894. [2022-11-26 01:01:51,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20894 states, 20893 states have (on average 2.92672186856842) internal successors, (61148), 20893 states have internal predecessors, (61148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:51,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20894 states to 20894 states and 61148 transitions. [2022-11-26 01:01:51,394 INFO L78 Accepts]: Start accepts. Automaton has 20894 states and 61148 transitions. Word has length 38 [2022-11-26 01:01:51,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:51,395 INFO L495 AbstractCegarLoop]: Abstraction has 20894 states and 61148 transitions. [2022-11-26 01:01:51,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:51,395 INFO L276 IsEmpty]: Start isEmpty. Operand 20894 states and 61148 transitions. [2022-11-26 01:01:51,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:51,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:51,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:51,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-26 01:01:51,429 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:51,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:51,429 INFO L85 PathProgramCache]: Analyzing trace with hash 576670590, now seen corresponding path program 37 times [2022-11-26 01:01:51,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:51,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538507933] [2022-11-26 01:01:51,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:51,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:51,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:51,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:51,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538507933] [2022-11-26 01:01:51,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538507933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:51,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:51,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-26 01:01:51,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751837898] [2022-11-26 01:01:51,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:51,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 01:01:51,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:51,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 01:01:51,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-26 01:01:51,800 INFO L87 Difference]: Start difference. First operand 20894 states and 61148 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:52,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:52,650 INFO L93 Difference]: Finished difference Result 37412 states and 104835 transitions. [2022-11-26 01:01:52,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-26 01:01:52,650 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:52,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:52,735 INFO L225 Difference]: With dead ends: 37412 [2022-11-26 01:01:52,736 INFO L226 Difference]: Without dead ends: 37396 [2022-11-26 01:01:52,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2022-11-26 01:01:52,736 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 113 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:52,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 0 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 01:01:52,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37396 states. [2022-11-26 01:01:53,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37396 to 21014. [2022-11-26 01:01:53,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21014 states, 21013 states have (on average 2.923142816351782) internal successors, (61424), 21013 states have internal predecessors, (61424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:53,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21014 states to 21014 states and 61424 transitions. [2022-11-26 01:01:53,209 INFO L78 Accepts]: Start accepts. Automaton has 21014 states and 61424 transitions. Word has length 38 [2022-11-26 01:01:53,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:53,209 INFO L495 AbstractCegarLoop]: Abstraction has 21014 states and 61424 transitions. [2022-11-26 01:01:53,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:53,209 INFO L276 IsEmpty]: Start isEmpty. Operand 21014 states and 61424 transitions. [2022-11-26 01:01:53,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:53,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:53,240 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:53,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-26 01:01:53,240 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:53,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:53,241 INFO L85 PathProgramCache]: Analyzing trace with hash 416232818, now seen corresponding path program 38 times [2022-11-26 01:01:53,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:53,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134802749] [2022-11-26 01:01:53,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:53,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:53,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:53,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:53,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134802749] [2022-11-26 01:01:53,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134802749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:53,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:53,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-26 01:01:53,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821509617] [2022-11-26 01:01:53,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:53,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 01:01:53,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:53,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 01:01:53,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-11-26 01:01:53,587 INFO L87 Difference]: Start difference. First operand 21014 states and 61424 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:54,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:54,374 INFO L93 Difference]: Finished difference Result 21572 states and 62388 transitions. [2022-11-26 01:01:54,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-26 01:01:54,374 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:54,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:54,436 INFO L225 Difference]: With dead ends: 21572 [2022-11-26 01:01:54,436 INFO L226 Difference]: Without dead ends: 21516 [2022-11-26 01:01:54,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2022-11-26 01:01:54,437 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 60 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:54,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 0 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 01:01:54,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21516 states. [2022-11-26 01:01:54,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21516 to 20990. [2022-11-26 01:01:54,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20990 states, 20989 states have (on average 2.9224832054885894) internal successors, (61340), 20989 states have internal predecessors, (61340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:54,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20990 states to 20990 states and 61340 transitions. [2022-11-26 01:01:54,816 INFO L78 Accepts]: Start accepts. Automaton has 20990 states and 61340 transitions. Word has length 38 [2022-11-26 01:01:54,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:54,816 INFO L495 AbstractCegarLoop]: Abstraction has 20990 states and 61340 transitions. [2022-11-26 01:01:54,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:54,817 INFO L276 IsEmpty]: Start isEmpty. Operand 20990 states and 61340 transitions. [2022-11-26 01:01:54,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:54,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:54,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:54,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-26 01:01:54,848 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:54,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:54,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1360816398, now seen corresponding path program 39 times [2022-11-26 01:01:54,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:54,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770462831] [2022-11-26 01:01:54,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:54,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:55,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:55,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:55,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770462831] [2022-11-26 01:01:55,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770462831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:55,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:55,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-26 01:01:55,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902383731] [2022-11-26 01:01:55,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:55,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 01:01:55,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:55,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 01:01:55,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-26 01:01:55,214 INFO L87 Difference]: Start difference. First operand 20990 states and 61340 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:55,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:55,756 INFO L93 Difference]: Finished difference Result 21478 states and 62172 transitions. [2022-11-26 01:01:55,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-26 01:01:55,756 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:55,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:55,916 INFO L225 Difference]: With dead ends: 21478 [2022-11-26 01:01:55,916 INFO L226 Difference]: Without dead ends: 21350 [2022-11-26 01:01:55,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-11-26 01:01:55,917 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 65 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:55,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 0 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 01:01:55,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21350 states. [2022-11-26 01:01:56,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21350 to 20942. [2022-11-26 01:01:56,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20942 states, 20941 states have (on average 2.9234516021202426) internal successors, (61220), 20941 states have internal predecessors, (61220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:56,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20942 states to 20942 states and 61220 transitions. [2022-11-26 01:01:56,233 INFO L78 Accepts]: Start accepts. Automaton has 20942 states and 61220 transitions. Word has length 38 [2022-11-26 01:01:56,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:56,233 INFO L495 AbstractCegarLoop]: Abstraction has 20942 states and 61220 transitions. [2022-11-26 01:01:56,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:56,233 INFO L276 IsEmpty]: Start isEmpty. Operand 20942 states and 61220 transitions. [2022-11-26 01:01:56,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:56,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:56,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:56,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-26 01:01:56,265 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:56,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:56,266 INFO L85 PathProgramCache]: Analyzing trace with hash -642667550, now seen corresponding path program 40 times [2022-11-26 01:01:56,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:56,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153968868] [2022-11-26 01:01:56,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:56,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:56,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:56,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:56,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153968868] [2022-11-26 01:01:56,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153968868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:56,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:56,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-26 01:01:56,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315826231] [2022-11-26 01:01:56,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:56,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 01:01:56,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:56,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 01:01:56,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-26 01:01:56,612 INFO L87 Difference]: Start difference. First operand 20942 states and 61220 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:57,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:57,199 INFO L93 Difference]: Finished difference Result 21340 states and 61944 transitions. [2022-11-26 01:01:57,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 01:01:57,200 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:57,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:57,243 INFO L225 Difference]: With dead ends: 21340 [2022-11-26 01:01:57,244 INFO L226 Difference]: Without dead ends: 21164 [2022-11-26 01:01:57,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-11-26 01:01:57,245 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 75 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:57,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 0 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 01:01:57,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21164 states. [2022-11-26 01:01:57,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21164 to 20894. [2022-11-26 01:01:57,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20894 states, 20893 states have (on average 2.92442444837984) internal successors, (61100), 20893 states have internal predecessors, (61100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:57,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20894 states to 20894 states and 61100 transitions. [2022-11-26 01:01:57,697 INFO L78 Accepts]: Start accepts. Automaton has 20894 states and 61100 transitions. Word has length 38 [2022-11-26 01:01:57,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:57,697 INFO L495 AbstractCegarLoop]: Abstraction has 20894 states and 61100 transitions. [2022-11-26 01:01:57,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:57,697 INFO L276 IsEmpty]: Start isEmpty. Operand 20894 states and 61100 transitions. [2022-11-26 01:01:57,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:57,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:57,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:57,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-26 01:01:57,728 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:57,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:57,729 INFO L85 PathProgramCache]: Analyzing trace with hash 489914892, now seen corresponding path program 41 times [2022-11-26 01:01:57,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:57,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213318603] [2022-11-26 01:01:57,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:57,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:58,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:58,049 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:58,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213318603] [2022-11-26 01:01:58,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213318603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:58,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:58,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-26 01:01:58,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507076131] [2022-11-26 01:01:58,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:58,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 01:01:58,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:58,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 01:01:58,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-26 01:01:58,051 INFO L87 Difference]: Start difference. First operand 20894 states and 61100 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:58,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:58,503 INFO L93 Difference]: Finished difference Result 21340 states and 61896 transitions. [2022-11-26 01:01:58,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 01:01:58,504 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:01:58,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:58,547 INFO L225 Difference]: With dead ends: 21340 [2022-11-26 01:01:58,547 INFO L226 Difference]: Without dead ends: 21116 [2022-11-26 01:01:58,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-11-26 01:01:58,548 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 71 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:58,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 0 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 01:01:58,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21116 states. [2022-11-26 01:01:58,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21116 to 20846. [2022-11-26 01:01:59,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20846 states, 20845 states have (on average 2.9254017750059966) internal successors, (60980), 20845 states have internal predecessors, (60980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:59,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20846 states to 20846 states and 60980 transitions. [2022-11-26 01:01:59,048 INFO L78 Accepts]: Start accepts. Automaton has 20846 states and 60980 transitions. Word has length 38 [2022-11-26 01:01:59,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:59,048 INFO L495 AbstractCegarLoop]: Abstraction has 20846 states and 60980 transitions. [2022-11-26 01:01:59,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:59,048 INFO L276 IsEmpty]: Start isEmpty. Operand 20846 states and 60980 transitions. [2022-11-26 01:01:59,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:01:59,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:59,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:59,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-26 01:01:59,081 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:01:59,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:59,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1019322506, now seen corresponding path program 42 times [2022-11-26 01:01:59,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:59,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791585092] [2022-11-26 01:01:59,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:59,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:59,414 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:59,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791585092] [2022-11-26 01:01:59,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791585092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:59,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:59,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-26 01:01:59,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345111920] [2022-11-26 01:01:59,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:59,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 01:01:59,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:59,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 01:01:59,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-26 01:01:59,416 INFO L87 Difference]: Start difference. First operand 20846 states and 60980 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:00,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:02:00,379 INFO L93 Difference]: Finished difference Result 38814 states and 108233 transitions. [2022-11-26 01:02:00,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-26 01:02:00,380 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:02:00,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:02:00,466 INFO L225 Difference]: With dead ends: 38814 [2022-11-26 01:02:00,466 INFO L226 Difference]: Without dead ends: 38802 [2022-11-26 01:02:00,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2022-11-26 01:02:00,467 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 125 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-26 01:02:00,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 0 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-26 01:02:00,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38802 states. [2022-11-26 01:02:01,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38802 to 20906. [2022-11-26 01:02:01,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20906 states, 20905 states have (on average 2.9228892609423585) internal successors, (61103), 20905 states have internal predecessors, (61103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:01,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20906 states to 20906 states and 61103 transitions. [2022-11-26 01:02:01,119 INFO L78 Accepts]: Start accepts. Automaton has 20906 states and 61103 transitions. Word has length 38 [2022-11-26 01:02:01,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:02:01,119 INFO L495 AbstractCegarLoop]: Abstraction has 20906 states and 61103 transitions. [2022-11-26 01:02:01,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:01,119 INFO L276 IsEmpty]: Start isEmpty. Operand 20906 states and 61103 transitions. [2022-11-26 01:02:01,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:02:01,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:02:01,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:02:01,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-26 01:02:01,151 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:02:01,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:02:01,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1457216754, now seen corresponding path program 43 times [2022-11-26 01:02:01,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:02:01,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729358918] [2022-11-26 01:02:01,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:02:01,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:02:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:02:01,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:02:01,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:02:01,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729358918] [2022-11-26 01:02:01,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729358918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:02:01,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:02:01,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-26 01:02:01,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141449655] [2022-11-26 01:02:01,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:02:01,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 01:02:01,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:02:01,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 01:02:01,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-11-26 01:02:01,439 INFO L87 Difference]: Start difference. First operand 20906 states and 61103 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:02,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:02:02,072 INFO L93 Difference]: Finished difference Result 21238 states and 61689 transitions. [2022-11-26 01:02:02,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-26 01:02:02,073 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:02:02,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:02:02,116 INFO L225 Difference]: With dead ends: 21238 [2022-11-26 01:02:02,116 INFO L226 Difference]: Without dead ends: 21216 [2022-11-26 01:02:02,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2022-11-26 01:02:02,117 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 75 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 01:02:02,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 0 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 01:02:02,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21216 states. [2022-11-26 01:02:02,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21216 to 20894. [2022-11-26 01:02:02,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20894 states, 20893 states have (on average 2.922701383238405) internal successors, (61064), 20893 states have internal predecessors, (61064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:02,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20894 states to 20894 states and 61064 transitions. [2022-11-26 01:02:02,679 INFO L78 Accepts]: Start accepts. Automaton has 20894 states and 61064 transitions. Word has length 38 [2022-11-26 01:02:02,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:02:02,679 INFO L495 AbstractCegarLoop]: Abstraction has 20894 states and 61064 transitions. [2022-11-26 01:02:02,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:02,679 INFO L276 IsEmpty]: Start isEmpty. Operand 20894 states and 61064 transitions. [2022-11-26 01:02:02,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:02:02,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:02:02,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:02:02,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-26 01:02:02,711 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:02:02,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:02:02,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1740566480, now seen corresponding path program 44 times [2022-11-26 01:02:02,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:02:02,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365687933] [2022-11-26 01:02:02,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:02:02,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:02:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:02:02,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:02:02,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:02:02,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365687933] [2022-11-26 01:02:02,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365687933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:02:02,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:02:02,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-26 01:02:02,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78655936] [2022-11-26 01:02:02,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:02:02,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 01:02:02,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:02:02,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 01:02:02,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-26 01:02:02,968 INFO L87 Difference]: Start difference. First operand 20894 states and 61064 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:03,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:02:03,632 INFO L93 Difference]: Finished difference Result 21168 states and 61545 transitions. [2022-11-26 01:02:03,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-26 01:02:03,632 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:02:03,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:02:03,679 INFO L225 Difference]: With dead ends: 21168 [2022-11-26 01:02:03,679 INFO L226 Difference]: Without dead ends: 21122 [2022-11-26 01:02:03,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=217, Invalid=485, Unknown=0, NotChecked=0, Total=702 [2022-11-26 01:02:03,680 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 71 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 01:02:03,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 0 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 01:02:03,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21122 states. [2022-11-26 01:02:03,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21122 to 20870. [2022-11-26 01:02:03,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20870 states, 20869 states have (on average 2.923475010781542) internal successors, (61010), 20869 states have internal predecessors, (61010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:04,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20870 states to 20870 states and 61010 transitions. [2022-11-26 01:02:04,017 INFO L78 Accepts]: Start accepts. Automaton has 20870 states and 61010 transitions. Word has length 38 [2022-11-26 01:02:04,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:02:04,017 INFO L495 AbstractCegarLoop]: Abstraction has 20870 states and 61010 transitions. [2022-11-26 01:02:04,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:04,018 INFO L276 IsEmpty]: Start isEmpty. Operand 20870 states and 61010 transitions. [2022-11-26 01:02:04,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 01:02:04,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:02:04,188 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:02:04,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-26 01:02:04,188 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-26 01:02:04,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:02:04,189 INFO L85 PathProgramCache]: Analyzing trace with hash 986564514, now seen corresponding path program 45 times [2022-11-26 01:02:04,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:02:04,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277634295] [2022-11-26 01:02:04,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:02:04,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:02:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:02:04,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:02:04,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:02:04,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277634295] [2022-11-26 01:02:04,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277634295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:02:04,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:02:04,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-26 01:02:04,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777710258] [2022-11-26 01:02:04,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:02:04,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 01:02:04,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:02:04,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 01:02:04,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-26 01:02:04,519 INFO L87 Difference]: Start difference. First operand 20870 states and 61010 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:05,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:02:05,174 INFO L93 Difference]: Finished difference Result 21030 states and 61296 transitions. [2022-11-26 01:02:05,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-26 01:02:05,175 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-26 01:02:05,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:02:05,228 INFO L225 Difference]: With dead ends: 21030 [2022-11-26 01:02:05,229 INFO L226 Difference]: Without dead ends: 20972 [2022-11-26 01:02:05,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2022-11-26 01:02:05,230 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 69 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 01:02:05,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 0 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]