./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 14:56:48,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:56:48,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:56:48,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:56:48,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:56:48,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:56:48,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:56:48,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:56:48,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:56:48,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:56:48,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:56:48,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:56:48,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:56:48,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:56:48,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:56:48,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:56:48,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:56:48,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:56:48,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:56:48,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:56:48,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:56:48,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:56:48,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:56:48,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:56:48,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:56:48,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:56:48,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:56:48,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:56:48,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:56:48,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:56:48,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:56:48,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:56:48,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:56:48,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:56:48,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:56:48,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:56:48,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:56:48,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:56:48,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:56:48,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:56:48,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:56:48,911 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 14:56:48,933 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:56:48,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:56:48,934 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:56:48,934 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:56:48,935 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:56:48,935 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:56:48,935 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:56:48,936 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:56:48,936 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:56:48,936 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:56:48,936 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:56:48,936 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:56:48,936 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:56:48,937 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:56:48,937 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:56:48,937 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:56:48,937 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:56:48,937 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:56:48,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:56:48,938 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:56:48,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:56:48,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:56:48,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:56:48,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:56:48,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:56:48,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:56:48,939 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:56:48,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:56:48,939 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:56:48,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:56:48,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:56:48,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:56:48,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:56:48,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:56:48,940 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:56:48,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:56:48,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:56:48,940 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:56:48,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:56:48,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:56:48,946 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:56:48,947 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_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 [2022-12-14 14:56:49,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:56:49,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:56:49,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:56:49,152 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:56:49,152 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:56:49,153 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2022-12-14 14:56:51,780 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:56:51,915 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:56:51,916 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2022-12-14 14:56:51,921 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/data/1c673e5de/d9956f31cffb42a2b428eb8b10ead695/FLAGa5cdba32e [2022-12-14 14:56:51,932 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/data/1c673e5de/d9956f31cffb42a2b428eb8b10ead695 [2022-12-14 14:56:51,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:56:51,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:56:51,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:56:51,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:56:51,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:56:51,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:56:51" (1/1) ... [2022-12-14 14:56:51,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8097c6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:56:51, skipping insertion in model container [2022-12-14 14:56:51,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:56:51" (1/1) ... [2022-12-14 14:56:51,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:56:51,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:56:52,081 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:56:52,083 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:56:52,084 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:56:52,084 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:56:52,087 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:56:52,088 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:56:52,088 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:56:52,088 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:56:52,092 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:56:52,093 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:56:52,093 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:56:52,094 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:56:52,094 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:56:52,095 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:56:52,096 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:56:52,096 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:56:52,097 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:56:52,097 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:56:52,099 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:56:52,100 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:56:52,104 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_e5cdf13d-de53-453d-9337-57f970aad98c/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-12-14 14:56:52,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:56:52,118 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:56:52,128 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:56:52,129 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:56:52,129 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:56:52,129 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:56:52,130 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:56:52,131 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:56:52,131 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:56:52,131 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:56:52,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:56:52,134 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:56:52,134 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:56:52,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:56:52,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:56:52,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:56:52,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:56:52,137 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:56:52,137 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:56:52,137 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:56:52,139 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 14:56:52,139 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 14:56:52,143 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_e5cdf13d-de53-453d-9337-57f970aad98c/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-12-14 14:56:52,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:56:52,157 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:56:52,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:56:52 WrapperNode [2022-12-14 14:56:52,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:56:52,158 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:56:52,158 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:56:52,158 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:56:52,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:56:52" (1/1) ... [2022-12-14 14:56:52,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:56:52" (1/1) ... [2022-12-14 14:56:52,210 INFO L138 Inliner]: procedures = 29, calls = 88, calls flagged for inlining = 22, calls inlined = 32, statements flattened = 386 [2022-12-14 14:56:52,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:56:52,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:56:52,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:56:52,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:56:52,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:56:52" (1/1) ... [2022-12-14 14:56:52,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:56:52" (1/1) ... [2022-12-14 14:56:52,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:56:52" (1/1) ... [2022-12-14 14:56:52,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:56:52" (1/1) ... [2022-12-14 14:56:52,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:56:52" (1/1) ... [2022-12-14 14:56:52,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:56:52" (1/1) ... [2022-12-14 14:56:52,239 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:56:52" (1/1) ... [2022-12-14 14:56:52,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:56:52" (1/1) ... [2022-12-14 14:56:52,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:56:52,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:56:52,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:56:52,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:56:52,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:56:52" (1/1) ... [2022-12-14 14:56:52,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:56:52,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:56:52,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:56:52,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:56:52,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:56:52,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 14:56:52,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 14:56:52,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 14:56:52,296 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-14 14:56:52,296 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-14 14:56:52,296 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-14 14:56:52,296 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-14 14:56:52,296 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-14 14:56:52,296 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-14 14:56:52,296 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-14 14:56:52,296 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-14 14:56:52,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:56:52,296 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-12-14 14:56:52,296 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-12-14 14:56:52,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-12-14 14:56:52,297 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-12-14 14:56:52,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-14 14:56:52,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-14 14:56:52,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 14:56:52,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:56:52,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:56:52,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 14:56:52,298 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 14:56:52,395 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:56:52,397 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:56:52,808 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:56:52,949 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:56:52,949 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-14 14:56:52,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:56:52 BoogieIcfgContainer [2022-12-14 14:56:52,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:56:52,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:56:52,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:56:52,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:56:52,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:56:51" (1/3) ... [2022-12-14 14:56:52,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443c538e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:56:52, skipping insertion in model container [2022-12-14 14:56:52,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:56:52" (2/3) ... [2022-12-14 14:56:52,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443c538e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:56:52, skipping insertion in model container [2022-12-14 14:56:52,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:56:52" (3/3) ... [2022-12-14 14:56:52,961 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2022-12-14 14:56:52,970 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 14:56:52,981 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:56:52,982 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 14:56:52,982 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 14:56:53,080 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-12-14 14:56:53,114 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 14:56:53,129 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 307 places, 311 transitions, 694 flow [2022-12-14 14:56:53,132 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 307 places, 311 transitions, 694 flow [2022-12-14 14:56:53,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 311 transitions, 694 flow [2022-12-14 14:56:53,228 INFO L130 PetriNetUnfolder]: 21/265 cut-off events. [2022-12-14 14:56:53,228 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-14 14:56:53,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 265 events. 21/265 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 286 event pairs, 0 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 225. Up to 3 conditions per place. [2022-12-14 14:56:53,238 INFO L119 LiptonReduction]: Number of co-enabled transitions 8600 [2022-12-14 14:57:01,482 INFO L134 LiptonReduction]: Checked pairs total: 33030 [2022-12-14 14:57:01,482 INFO L136 LiptonReduction]: Total number of compositions: 289 [2022-12-14 14:57:01,488 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 88 places, 79 transitions, 230 flow [2022-12-14 14:57:01,575 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2245 states, 2244 states have (on average 4.2174688057041) internal successors, (9464), 2244 states have internal predecessors, (9464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:57:01,588 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:57:01,593 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;@5a3728de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:57:01,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-14 14:57:01,600 INFO L276 IsEmpty]: Start isEmpty. Operand has 2245 states, 2244 states have (on average 4.2174688057041) internal successors, (9464), 2244 states have internal predecessors, (9464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:57:01,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 14:57:01,621 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:57:01,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:57:01,622 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:57:01,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:57:01,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1897363716, now seen corresponding path program 1 times [2022-12-14 14:57:01,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:57:01,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479960946] [2022-12-14 14:57:01,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:57:01,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:57:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:57:01,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:57:01,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:57:01,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479960946] [2022-12-14 14:57:01,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479960946] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:57:01,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:57:01,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:57:01,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809071370] [2022-12-14 14:57:01,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:57:01,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 14:57:01,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:57:01,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 14:57:01,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 14:57:01,922 INFO L87 Difference]: Start difference. First operand has 2245 states, 2244 states have (on average 4.2174688057041) internal successors, (9464), 2244 states have internal predecessors, (9464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:57:02,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:57:02,024 INFO L93 Difference]: Finished difference Result 2245 states and 9396 transitions. [2022-12-14 14:57:02,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 14:57:02,027 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-12-14 14:57:02,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:57:02,078 INFO L225 Difference]: With dead ends: 2245 [2022-12-14 14:57:02,079 INFO L226 Difference]: Without dead ends: 2245 [2022-12-14 14:57:02,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 14:57:02,082 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:57:02,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:57:02,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2245 states. [2022-12-14 14:57:02,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2245 to 2245. [2022-12-14 14:57:02,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2245 states, 2244 states have (on average 4.18716577540107) internal successors, (9396), 2244 states have internal predecessors, (9396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:57:02,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2245 states to 2245 states and 9396 transitions. [2022-12-14 14:57:02,230 INFO L78 Accepts]: Start accepts. Automaton has 2245 states and 9396 transitions. Word has length 51 [2022-12-14 14:57:02,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:57:02,231 INFO L495 AbstractCegarLoop]: Abstraction has 2245 states and 9396 transitions. [2022-12-14 14:57:02,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:57:02,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2245 states and 9396 transitions. [2022-12-14 14:57:02,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 14:57:02,241 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:57:02,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:57:02,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:57:02,241 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:57:02,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:57:02,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1701224223, now seen corresponding path program 1 times [2022-12-14 14:57:02,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:57:02,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629206461] [2022-12-14 14:57:02,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:57:02,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:57:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:57:02,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:57:02,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:57:02,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629206461] [2022-12-14 14:57:02,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629206461] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:57:02,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:57:02,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:57:02,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446983394] [2022-12-14 14:57:02,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:57:02,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:57:02,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:57:02,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:57:02,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:57:02,814 INFO L87 Difference]: Start difference. First operand 2245 states and 9396 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:57:03,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:57:03,028 INFO L93 Difference]: Finished difference Result 4167 states and 15875 transitions. [2022-12-14 14:57:03,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:57:03,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-12-14 14:57:03,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:57:03,041 INFO L225 Difference]: With dead ends: 4167 [2022-12-14 14:57:03,041 INFO L226 Difference]: Without dead ends: 2246 [2022-12-14 14:57:03,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:57:03,042 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 65 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:57:03,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 66 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:57:03,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2022-12-14 14:57:03,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 2246. [2022-12-14 14:57:03,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2246 states, 2245 states have (on average 4.1857461024498885) internal successors, (9397), 2245 states have internal predecessors, (9397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:57:03,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2246 states to 2246 states and 9397 transitions. [2022-12-14 14:57:03,102 INFO L78 Accepts]: Start accepts. Automaton has 2246 states and 9397 transitions. Word has length 52 [2022-12-14 14:57:03,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:57:03,102 INFO L495 AbstractCegarLoop]: Abstraction has 2246 states and 9397 transitions. [2022-12-14 14:57:03,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:57:03,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2246 states and 9397 transitions. [2022-12-14 14:57:03,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-14 14:57:03,107 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:57:03,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:57:03,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 14:57:03,108 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:57:03,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:57:03,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1537749106, now seen corresponding path program 1 times [2022-12-14 14:57:03,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:57:03,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380904462] [2022-12-14 14:57:03,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:57:03,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:57:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:57:03,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:57:03,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:57:03,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380904462] [2022-12-14 14:57:03,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380904462] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:57:03,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442837960] [2022-12-14 14:57:03,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:57:03,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:57:03,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:57:03,674 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:57:03,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 14:57:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:57:03,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-14 14:57:03,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:57:04,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 14:57:04,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:57:04,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442837960] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:57:04,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:57:04,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2022-12-14 14:57:04,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733454289] [2022-12-14 14:57:04,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:57:04,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:57:04,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:57:04,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:57:04,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-14 14:57:04,155 INFO L87 Difference]: Start difference. First operand 2246 states and 9397 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:57:04,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:57:04,415 INFO L93 Difference]: Finished difference Result 6027 states and 25932 transitions. [2022-12-14 14:57:04,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:57:04,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-12-14 14:57:04,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:57:04,460 INFO L225 Difference]: With dead ends: 6027 [2022-12-14 14:57:04,460 INFO L226 Difference]: Without dead ends: 5972 [2022-12-14 14:57:04,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-12-14 14:57:04,462 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 107 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:57:04,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 137 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:57:04,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2022-12-14 14:57:04,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 4216. [2022-12-14 14:57:04,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4216 states, 4215 states have (on average 4.277342823250296) internal successors, (18029), 4215 states have internal predecessors, (18029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:57:04,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4216 states to 4216 states and 18029 transitions. [2022-12-14 14:57:04,632 INFO L78 Accepts]: Start accepts. Automaton has 4216 states and 18029 transitions. Word has length 53 [2022-12-14 14:57:04,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:57:04,632 INFO L495 AbstractCegarLoop]: Abstraction has 4216 states and 18029 transitions. [2022-12-14 14:57:04,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:57:04,633 INFO L276 IsEmpty]: Start isEmpty. Operand 4216 states and 18029 transitions. [2022-12-14 14:57:04,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-14 14:57:04,644 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:57:04,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:57:04,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 14:57:04,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:57:04,845 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:57:04,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:57:04,845 INFO L85 PathProgramCache]: Analyzing trace with hash -70426706, now seen corresponding path program 2 times [2022-12-14 14:57:04,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:57:04,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969128983] [2022-12-14 14:57:04,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:57:04,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:57:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:57:05,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:57:05,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:57:05,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969128983] [2022-12-14 14:57:05,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969128983] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:57:05,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488829367] [2022-12-14 14:57:05,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:57:05,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:57:05,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:57:05,496 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:57:05,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 14:57:05,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 14:57:05,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:57:05,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-14 14:57:05,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:57:05,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 14:57:05,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:57:05,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488829367] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:57:05,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:57:05,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2022-12-14 14:57:05,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275803411] [2022-12-14 14:57:05,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:57:05,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:57:05,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:57:05,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:57:05,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-12-14 14:57:05,915 INFO L87 Difference]: Start difference. First operand 4216 states and 18029 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:57:06,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:57:06,130 INFO L93 Difference]: Finished difference Result 5971 states and 25760 transitions. [2022-12-14 14:57:06,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:57:06,131 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-12-14 14:57:06,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:57:06,157 INFO L225 Difference]: With dead ends: 5971 [2022-12-14 14:57:06,157 INFO L226 Difference]: Without dead ends: 5832 [2022-12-14 14:57:06,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-12-14 14:57:06,158 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 109 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:57:06,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 123 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:57:06,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5832 states. [2022-12-14 14:57:06,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5832 to 4210. [2022-12-14 14:57:06,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4210 states, 4209 states have (on average 4.232359230220955) internal successors, (17814), 4209 states have internal predecessors, (17814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:57:06,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4210 states to 4210 states and 17814 transitions. [2022-12-14 14:57:06,274 INFO L78 Accepts]: Start accepts. Automaton has 4210 states and 17814 transitions. Word has length 53 [2022-12-14 14:57:06,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:57:06,274 INFO L495 AbstractCegarLoop]: Abstraction has 4210 states and 17814 transitions. [2022-12-14 14:57:06,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:57:06,274 INFO L276 IsEmpty]: Start isEmpty. Operand 4210 states and 17814 transitions. [2022-12-14 14:57:06,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 14:57:06,284 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:57:06,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:57:06,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 14:57:06,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:57:06,484 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:57:06,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:57:06,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1195214482, now seen corresponding path program 1 times [2022-12-14 14:57:06,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:57:06,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820297526] [2022-12-14 14:57:06,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:57:06,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:57:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:57:06,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:57:06,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:57:06,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820297526] [2022-12-14 14:57:06,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820297526] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:57:06,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844203910] [2022-12-14 14:57:06,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:57:06,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:57:06,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:57:06,766 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:57:06,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 14:57:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:57:06,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 14:57:06,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:57:06,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:57:06,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:57:07,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:57:07,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844203910] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:57:07,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1302552198] [2022-12-14 14:57:07,038 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 14:57:07,039 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:57:07,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-12-14 14:57:07,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959001409] [2022-12-14 14:57:07,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:57:07,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 14:57:07,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:57:07,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 14:57:07,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-12-14 14:57:07,041 INFO L87 Difference]: Start difference. First operand 4210 states and 17814 transitions. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:57:07,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:57:07,341 INFO L93 Difference]: Finished difference Result 6272 states and 24452 transitions. [2022-12-14 14:57:07,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:57:07,341 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 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 54 [2022-12-14 14:57:07,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:57:07,363 INFO L225 Difference]: With dead ends: 6272 [2022-12-14 14:57:07,363 INFO L226 Difference]: Without dead ends: 4211 [2022-12-14 14:57:07,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-12-14 14:57:07,364 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 230 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:57:07,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 190 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:57:07,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4211 states. [2022-12-14 14:57:07,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4211 to 4211. [2022-12-14 14:57:07,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4211 states, 4210 states have (on average 4.231591448931116) internal successors, (17815), 4210 states have internal predecessors, (17815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:57:07,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4211 states to 4211 states and 17815 transitions. [2022-12-14 14:57:07,485 INFO L78 Accepts]: Start accepts. Automaton has 4211 states and 17815 transitions. Word has length 54 [2022-12-14 14:57:07,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:57:07,485 INFO L495 AbstractCegarLoop]: Abstraction has 4211 states and 17815 transitions. [2022-12-14 14:57:07,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:57:07,486 INFO L276 IsEmpty]: Start isEmpty. Operand 4211 states and 17815 transitions. [2022-12-14 14:57:07,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 14:57:07,498 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:57:07,498 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:57:07,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 14:57:07,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:57:07,699 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:57:07,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:57:07,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1901832383, now seen corresponding path program 2 times [2022-12-14 14:57:07,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:57:07,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206410486] [2022-12-14 14:57:07,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:57:07,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:57:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:57:08,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 14:57:08,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:57:08,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206410486] [2022-12-14 14:57:08,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206410486] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:57:08,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706745431] [2022-12-14 14:57:08,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:57:08,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:57:08,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:57:08,040 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:57:08,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 14:57:08,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 14:57:08,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:57:08,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 14:57:08,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:57:08,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 14:57:08,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:57:08,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 14:57:08,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706745431] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 14:57:08,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 14:57:08,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 13 [2022-12-14 14:57:08,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688343281] [2022-12-14 14:57:08,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:57:08,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:57:08,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:57:08,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:57:08,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-12-14 14:57:08,465 INFO L87 Difference]: Start difference. First operand 4211 states and 17815 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:57:08,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:57:08,666 INFO L93 Difference]: Finished difference Result 6605 states and 29059 transitions. [2022-12-14 14:57:08,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:57:08,666 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-12-14 14:57:08,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:57:08,691 INFO L225 Difference]: With dead ends: 6605 [2022-12-14 14:57:08,692 INFO L226 Difference]: Without dead ends: 5905 [2022-12-14 14:57:08,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-12-14 14:57:08,692 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 197 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:57:08,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 80 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:57:08,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5905 states. [2022-12-14 14:57:08,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5905 to 3369. [2022-12-14 14:57:08,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3369 states, 3368 states have (on average 4.322446555819478) internal successors, (14558), 3368 states have internal predecessors, (14558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:57:08,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3369 states to 3369 states and 14558 transitions. [2022-12-14 14:57:08,812 INFO L78 Accepts]: Start accepts. Automaton has 3369 states and 14558 transitions. Word has length 55 [2022-12-14 14:57:08,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:57:08,813 INFO L495 AbstractCegarLoop]: Abstraction has 3369 states and 14558 transitions. [2022-12-14 14:57:08,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:57:08,813 INFO L276 IsEmpty]: Start isEmpty. Operand 3369 states and 14558 transitions. [2022-12-14 14:57:08,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 14:57:08,819 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:57:08,819 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:57:08,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 14:57:09,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:57:09,021 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:57:09,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:57:09,022 INFO L85 PathProgramCache]: Analyzing trace with hash -202501649, now seen corresponding path program 1 times [2022-12-14 14:57:09,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:57:09,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763802364] [2022-12-14 14:57:09,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:57:09,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:57:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:57:09,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 14:57:09,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:57:09,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763802364] [2022-12-14 14:57:09,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763802364] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:57:09,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556247145] [2022-12-14 14:57:09,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:57:09,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:57:09,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:57:09,327 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:57:09,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 14:57:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:57:09,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 14:57:09,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:57:09,581 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 14:57:09,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:57:09,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 14:57:09,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556247145] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 14:57:09,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 14:57:09,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 13 [2022-12-14 14:57:09,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403668264] [2022-12-14 14:57:09,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:57:09,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:57:09,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:57:09,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:57:09,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-12-14 14:57:09,661 INFO L87 Difference]: Start difference. First operand 3369 states and 14558 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:57:09,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:57:09,845 INFO L93 Difference]: Finished difference Result 7871 states and 35584 transitions. [2022-12-14 14:57:09,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 14:57:09,845 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-12-14 14:57:09,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:57:09,866 INFO L225 Difference]: With dead ends: 7871 [2022-12-14 14:57:09,866 INFO L226 Difference]: Without dead ends: 6905 [2022-12-14 14:57:09,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-12-14 14:57:09,867 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 140 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:57:09,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 71 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:57:09,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6905 states. [2022-12-14 14:57:09,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6905 to 5103. [2022-12-14 14:57:09,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5103 states, 5102 states have (on average 4.449431595452763) internal successors, (22701), 5102 states have internal predecessors, (22701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:57:10,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5103 states to 5103 states and 22701 transitions. [2022-12-14 14:57:10,017 INFO L78 Accepts]: Start accepts. Automaton has 5103 states and 22701 transitions. Word has length 55 [2022-12-14 14:57:10,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:57:10,017 INFO L495 AbstractCegarLoop]: Abstraction has 5103 states and 22701 transitions. [2022-12-14 14:57:10,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:57:10,018 INFO L276 IsEmpty]: Start isEmpty. Operand 5103 states and 22701 transitions. [2022-12-14 14:57:10,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 14:57:10,031 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:57:10,031 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:57:10,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 14:57:10,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:57:10,233 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:57:10,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:57:10,233 INFO L85 PathProgramCache]: Analyzing trace with hash -602901519, now seen corresponding path program 1 times [2022-12-14 14:57:10,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:57:10,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936638959] [2022-12-14 14:57:10,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:57:10,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:57:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:57:12,062 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:57:12,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:57:12,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936638959] [2022-12-14 14:57:12,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936638959] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:57:12,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70903235] [2022-12-14 14:57:12,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:57:12,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:57:12,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:57:12,063 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:57:12,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cdf13d-de53-453d-9337-57f970aad98c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 14:57:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:57:12,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 99 conjunts are in the unsatisfiable core [2022-12-14 14:57:12,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:57:12,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:57:12,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-12-14 14:57:12,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:57:12,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-12-14 14:57:13,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:57:13,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-12-14 14:57:13,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:57:13,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2022-12-14 14:57:13,446 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:57:13,448 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:57:13,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 14 [2022-12-14 14:57:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:57:13,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:57:34,779 WARN L233 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 51 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:57:54,983 WARN L233 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:57:55,121 INFO L321 Elim1Store]: treesize reduction 10, result has 28.6 percent of original size [2022-12-14 14:57:55,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1082 treesize of output 812 [2022-12-14 14:57:55,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 804 treesize of output 748 [2022-12-14 14:57:55,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 748 treesize of output 720 [2022-12-14 14:57:55,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 720 treesize of output 608 [2022-12-14 14:57:55,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 312 treesize of output 298 [2022-12-14 14:57:55,766 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:57:55,767 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:57:55,767 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:57:55,767 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:57:55,774 INFO L321 Elim1Store]: treesize reduction 10, result has 28.6 percent of original size [2022-12-14 14:57:55,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2022-12-14 14:57:56,086 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 14:57:56,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70903235] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:57:56,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [243642400] [2022-12-14 14:57:56,086 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 14:57:56,087 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:57:56,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 39 [2022-12-14 14:57:56,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278988188] [2022-12-14 14:57:56,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:57:56,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-14 14:57:56,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:57:56,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-14 14:57:56,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1431, Unknown=24, NotChecked=0, Total=1640 [2022-12-14 14:57:56,089 INFO L87 Difference]: Start difference. First operand 5103 states and 22701 transitions. Second operand has 41 states, 40 states have (on average 3.825) internal successors, (153), 40 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:58:13,416 WARN L233 SmtUtils]: Spent 16.64s on a formula simplification. DAG size of input: 180 DAG size of output: 153 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:58:55,023 WARN L233 SmtUtils]: Spent 39.31s on a formula simplification. DAG size of input: 123 DAG size of output: 109 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:58:57,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 14:58:59,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 14:59:01,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 14:59:03,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 14:59:05,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 14:59:07,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 14:59:09,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 14:59:11,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 14:59:42,810 WARN L233 SmtUtils]: Spent 20.17s on a formula simplification. DAG size of input: 87 DAG size of output: 78 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:59:52,978 WARN L233 SmtUtils]: Spent 7.47s on a formula simplification that was a NOOP. DAG size: 150 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:59:55,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 14:59:57,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 14:59:59,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:00:29,655 WARN L233 SmtUtils]: Spent 20.14s on a formula simplification. DAG size of input: 73 DAG size of output: 65 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:00:31,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:00:33,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:00:35,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:01:58,827 WARN L233 SmtUtils]: Spent 1.15m on a formula simplification. DAG size of input: 95 DAG size of output: 87 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:02:00,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:02:02,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:02:04,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:03:57,650 WARN L233 SmtUtils]: Spent 1.61m on a formula simplification. DAG size of input: 125 DAG size of output: 116 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:05:18,920 WARN L233 SmtUtils]: Spent 1.18m on a formula simplification. DAG size of input: 105 DAG size of output: 98 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:05:21,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:05:23,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:05:25,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:05:27,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:05:54,554 WARN L233 SmtUtils]: Spent 14.41s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:05:56,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:05:58,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:06:01,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:06:03,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:06:35,180 WARN L233 SmtUtils]: Spent 27.00s on a formula simplification. DAG size of input: 104 DAG size of output: 95 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:06:37,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:08:04,557 WARN L233 SmtUtils]: Spent 1.28m on a formula simplification. DAG size of input: 112 DAG size of output: 105 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:08:06,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:08:08,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:08:10,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:08:40,844 WARN L233 SmtUtils]: Spent 26.47s on a formula simplification. DAG size of input: 142 DAG size of output: 133 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:08:42,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:08:44,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:08:46,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:10:15,847 WARN L233 SmtUtils]: Spent 1.24m on a formula simplification. DAG size of input: 113 DAG size of output: 111 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:10:17,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:10:19,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:10:22,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:10:24,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:10:26,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:10:28,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:10:30,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:10:47,519 WARN L233 SmtUtils]: Spent 16.01s on a formula simplification. DAG size of input: 170 DAG size of output: 128 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:11:38,660 WARN L233 SmtUtils]: Spent 36.32s on a formula simplification that was a NOOP. DAG size: 82 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)