./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI --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 695981a417316c4c07ccb52b1c4d12f1832a3ea99763b6fdb28c03b28d3203ad --- 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-5e519f3 [2022-11-03 03:44:05,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:44:05,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:44:05,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:44:05,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:44:05,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:44:05,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:44:05,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:44:05,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:44:05,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:44:05,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:44:05,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:44:05,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:44:05,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:44:05,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:44:05,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:44:05,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:44:05,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:44:05,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:44:05,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:44:05,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:44:05,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:44:05,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:44:05,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:44:05,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:44:05,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:44:05,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:44:05,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:44:05,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:44:05,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:44:05,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:44:05,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:44:05,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:44:05,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:44:05,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:44:05,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:44:05,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:44:05,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:44:05,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:44:05,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:44:05,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:44:05,937 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:44:05,958 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:44:05,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:44:05,959 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:44:05,959 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:44:05,960 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:44:05,960 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:44:05,960 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:44:05,961 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:44:05,961 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:44:05,961 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:44:05,961 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:44:05,961 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:44:05,962 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:44:05,962 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:44:05,962 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:44:05,962 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:44:05,962 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:44:05,963 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:44:05,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:44:05,963 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:44:05,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:44:05,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:44:05,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:44:05,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:44:05,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:44:05,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:44:05,965 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:44:05,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:44:05,965 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:44:05,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:44:05,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:44:05,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:44:05,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:44:05,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:44:05,966 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:44:05,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:44:05,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:44:05,967 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:44:05,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:44:05,967 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:44:05,967 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:44:05,967 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_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 695981a417316c4c07ccb52b1c4d12f1832a3ea99763b6fdb28c03b28d3203ad [2022-11-03 03:44:06,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:44:06,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:44:06,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:44:06,244 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:44:06,246 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:44:06,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c [2022-11-03 03:44:06,336 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/data/9f5b4dde6/15680e4832dd47b984fc0b4cd94fab5e/FLAG2ba629815 [2022-11-03 03:44:07,326 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:44:07,328 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c [2022-11-03 03:44:07,379 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/data/9f5b4dde6/15680e4832dd47b984fc0b4cd94fab5e/FLAG2ba629815 [2022-11-03 03:44:07,784 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/data/9f5b4dde6/15680e4832dd47b984fc0b4cd94fab5e [2022-11-03 03:44:07,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:44:07,789 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:44:07,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:44:07,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:44:07,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:44:07,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:44:07" (1/1) ... [2022-11-03 03:44:07,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41219728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:07, skipping insertion in model container [2022-11-03 03:44:07,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:44:07" (1/1) ... [2022-11-03 03:44:07,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:44:08,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:44:10,539 WARN L230 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_9ec6c1a8-8d6b-4465-92b8-099a587136df/sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c[378560,378573] [2022-11-03 03:44:10,586 WARN L230 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_9ec6c1a8-8d6b-4465-92b8-099a587136df/sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c[383339,383352] [2022-11-03 03:44:10,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:44:10,957 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:44:12,244 WARN L230 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_9ec6c1a8-8d6b-4465-92b8-099a587136df/sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c[378560,378573] [2022-11-03 03:44:12,252 WARN L230 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_9ec6c1a8-8d6b-4465-92b8-099a587136df/sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c[383339,383352] [2022-11-03 03:44:12,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:44:12,428 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:44:12,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12 WrapperNode [2022-11-03 03:44:12,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:44:12,430 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:44:12,430 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:44:12,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:44:12,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12" (1/1) ... [2022-11-03 03:44:12,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12" (1/1) ... [2022-11-03 03:44:13,113 INFO L138 Inliner]: procedures = 62, calls = 69, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 13030 [2022-11-03 03:44:13,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:44:13,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:44:13,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:44:13,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:44:13,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12" (1/1) ... [2022-11-03 03:44:13,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12" (1/1) ... [2022-11-03 03:44:13,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12" (1/1) ... [2022-11-03 03:44:13,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12" (1/1) ... [2022-11-03 03:44:13,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12" (1/1) ... [2022-11-03 03:44:13,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12" (1/1) ... [2022-11-03 03:44:13,615 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12" (1/1) ... [2022-11-03 03:44:13,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12" (1/1) ... [2022-11-03 03:44:13,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:44:13,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:44:13,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:44:13,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:44:13,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12" (1/1) ... [2022-11-03 03:44:13,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:44:13,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:44:13,798 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:44:13,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:44:13,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:44:13,940 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-03 03:44:13,940 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-03 03:44:13,941 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-03 03:44:13,941 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-03 03:44:13,941 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-03 03:44:13,941 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-03 03:44:13,941 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-03 03:44:13,941 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-03 03:44:13,942 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-03 03:44:13,942 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-03 03:44:13,942 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-03 03:44:13,942 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-03 03:44:13,942 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-03 03:44:13,942 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-03 03:44:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:44:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:44:13,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:44:14,215 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:44:14,218 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:44:24,630 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:44:27,530 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:44:27,530 INFO L300 CfgBuilder]: Removed 13 assume(true) statements. [2022-11-03 03:44:27,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:44:27 BoogieIcfgContainer [2022-11-03 03:44:27,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:44:27,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:44:27,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:44:27,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:44:27,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:44:07" (1/3) ... [2022-11-03 03:44:27,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cbf8a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:44:27, skipping insertion in model container [2022-11-03 03:44:27,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12" (2/3) ... [2022-11-03 03:44:27,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cbf8a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:44:27, skipping insertion in model container [2022-11-03 03:44:27,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:44:27" (3/3) ... [2022-11-03 03:44:27,544 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.09.cil-2.c [2022-11-03 03:44:27,562 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:44:27,562 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 03:44:27,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:44:27,658 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;@d9cf67e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:44:27,659 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-03 03:44:27,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 1804 states, 1769 states have (on average 1.9621254946297344) internal successors, (3471), 1774 states have internal predecessors, (3471), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-03 03:44:27,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-03 03:44:27,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:27,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:44:27,686 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:27,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:27,692 INFO L85 PathProgramCache]: Analyzing trace with hash -627798454, now seen corresponding path program 1 times [2022-11-03 03:44:27,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:27,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663508145] [2022-11-03 03:44:27,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:27,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:28,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:44:28,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:28,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663508145] [2022-11-03 03:44:28,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663508145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:28,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:28,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:44:28,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708545018] [2022-11-03 03:44:28,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:28,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:44:28,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:28,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:44:28,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:44:28,432 INFO L87 Difference]: Start difference. First operand has 1804 states, 1769 states have (on average 1.9621254946297344) internal successors, (3471), 1774 states have internal predecessors, (3471), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 03:44:29,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:29,687 INFO L93 Difference]: Finished difference Result 3745 states and 7279 transitions. [2022-11-03 03:44:29,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:44:29,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2022-11-03 03:44:29,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:29,721 INFO L225 Difference]: With dead ends: 3745 [2022-11-03 03:44:29,722 INFO L226 Difference]: Without dead ends: 1940 [2022-11-03 03:44:29,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:44:29,737 INFO L413 NwaCegarLoop]: 3428 mSDtfsCounter, 3688 mSDsluCounter, 3631 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3688 SdHoareTripleChecker+Valid, 6768 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:29,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3688 Valid, 6768 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 03:44:29,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2022-11-03 03:44:29,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1939. [2022-11-03 03:44:29,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1939 states, 1881 states have (on average 1.9298245614035088) internal successors, (3630), 1885 states have internal predecessors, (3630), 44 states have call successors, (44), 13 states have call predecessors, (44), 12 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-03 03:44:29,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 3716 transitions. [2022-11-03 03:44:29,930 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 3716 transitions. Word has length 59 [2022-11-03 03:44:29,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:29,931 INFO L495 AbstractCegarLoop]: Abstraction has 1939 states and 3716 transitions. [2022-11-03 03:44:29,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 03:44:29,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 3716 transitions. [2022-11-03 03:44:29,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-03 03:44:29,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:29,948 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 03:44:29,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:44:29,949 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:29,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:29,950 INFO L85 PathProgramCache]: Analyzing trace with hash -226888850, now seen corresponding path program 1 times [2022-11-03 03:44:29,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:29,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054459562] [2022-11-03 03:44:29,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:29,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:30,404 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 03:44:30,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:30,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054459562] [2022-11-03 03:44:30,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054459562] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:44:30,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568703046] [2022-11-03 03:44:30,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:30,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:44:30,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:44:30,410 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:44:30,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:44:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:30,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:44:30,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:30,777 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:44:30,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:44:30,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568703046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:30,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:44:30,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-03 03:44:30,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007310099] [2022-11-03 03:44:30,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:30,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:30,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:30,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:30,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:44:30,783 INFO L87 Difference]: Start difference. First operand 1939 states and 3716 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:44:31,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:31,361 INFO L93 Difference]: Finished difference Result 2518 states and 4609 transitions. [2022-11-03 03:44:31,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:31,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 116 [2022-11-03 03:44:31,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:31,376 INFO L225 Difference]: With dead ends: 2518 [2022-11-03 03:44:31,376 INFO L226 Difference]: Without dead ends: 2225 [2022-11-03 03:44:31,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:44:31,380 INFO L413 NwaCegarLoop]: 3306 mSDtfsCounter, 3473 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3473 SdHoareTripleChecker+Valid, 3493 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:31,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3473 Valid, 3493 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:44:31,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2022-11-03 03:44:31,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2219. [2022-11-03 03:44:31,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2219 states, 2113 states have (on average 1.882158069096072) internal successors, (3977), 2118 states have internal predecessors, (3977), 80 states have call successors, (80), 25 states have call predecessors, (80), 24 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2022-11-03 03:44:31,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2219 states to 2219 states and 4135 transitions. [2022-11-03 03:44:31,493 INFO L78 Accepts]: Start accepts. Automaton has 2219 states and 4135 transitions. Word has length 116 [2022-11-03 03:44:31,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:31,493 INFO L495 AbstractCegarLoop]: Abstraction has 2219 states and 4135 transitions. [2022-11-03 03:44:31,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:44:31,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2219 states and 4135 transitions. [2022-11-03 03:44:31,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-03 03:44:31,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:31,499 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 03:44:31,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:44:31,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-03 03:44:31,726 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:31,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:31,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1875117356, now seen corresponding path program 1 times [2022-11-03 03:44:31,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:31,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648390674] [2022-11-03 03:44:31,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:31,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:31,923 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 03:44:31,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:31,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648390674] [2022-11-03 03:44:31,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648390674] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:44:31,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759467349] [2022-11-03 03:44:31,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:31,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:44:31,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:44:31,926 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:44:31,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:44:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:32,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:44:32,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:32,247 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 03:44:32,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:44:32,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759467349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:32,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:44:32,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-03 03:44:32,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203282234] [2022-11-03 03:44:32,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:32,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:32,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:32,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:32,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:44:32,258 INFO L87 Difference]: Start difference. First operand 2219 states and 4135 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:44:32,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:32,899 INFO L93 Difference]: Finished difference Result 3352 states and 5878 transitions. [2022-11-03 03:44:32,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:32,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 116 [2022-11-03 03:44:32,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:32,922 INFO L225 Difference]: With dead ends: 3352 [2022-11-03 03:44:32,923 INFO L226 Difference]: Without dead ends: 2779 [2022-11-03 03:44:32,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:44:32,934 INFO L413 NwaCegarLoop]: 3294 mSDtfsCounter, 3479 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3479 SdHoareTripleChecker+Valid, 3481 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:32,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3479 Valid, 3481 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:44:32,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2022-11-03 03:44:33,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 2771. [2022-11-03 03:44:33,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2771 states, 2571 states have (on average 1.8121353558926487) internal successors, (4659), 2578 states have internal predecessors, (4659), 150 states have call successors, (150), 49 states have call predecessors, (150), 48 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2022-11-03 03:44:33,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2771 states to 2771 states and 4957 transitions. [2022-11-03 03:44:33,057 INFO L78 Accepts]: Start accepts. Automaton has 2771 states and 4957 transitions. Word has length 116 [2022-11-03 03:44:33,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:33,057 INFO L495 AbstractCegarLoop]: Abstraction has 2771 states and 4957 transitions. [2022-11-03 03:44:33,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:44:33,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2771 states and 4957 transitions. [2022-11-03 03:44:33,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-03 03:44:33,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:33,062 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 03:44:33,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:44:33,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:44:33,290 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:33,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:33,291 INFO L85 PathProgramCache]: Analyzing trace with hash -631418774, now seen corresponding path program 1 times [2022-11-03 03:44:33,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:33,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735298762] [2022-11-03 03:44:33,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:33,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:33,531 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 03:44:33,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:33,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735298762] [2022-11-03 03:44:33,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735298762] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:44:33,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626730080] [2022-11-03 03:44:33,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:33,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:44:33,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:44:33,535 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:44:33,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:44:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:33,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:44:33,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:33,822 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 03:44:33,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:44:33,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626730080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:33,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:44:33,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-03 03:44:33,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145233577] [2022-11-03 03:44:33,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:33,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:33,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:33,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:33,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:44:33,825 INFO L87 Difference]: Start difference. First operand 2771 states and 4957 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:44:34,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:34,436 INFO L93 Difference]: Finished difference Result 4996 states and 8366 transitions. [2022-11-03 03:44:34,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:34,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 116 [2022-11-03 03:44:34,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:34,456 INFO L225 Difference]: With dead ends: 4996 [2022-11-03 03:44:34,456 INFO L226 Difference]: Without dead ends: 3871 [2022-11-03 03:44:34,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:44:34,463 INFO L413 NwaCegarLoop]: 3304 mSDtfsCounter, 3482 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3482 SdHoareTripleChecker+Valid, 3491 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:34,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3482 Valid, 3491 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:44:34,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3871 states. [2022-11-03 03:44:34,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3871 to 3859. [2022-11-03 03:44:34,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3859 states, 3475 states have (on average 1.7263309352517986) internal successors, (5999), 3486 states have internal predecessors, (5999), 286 states have call successors, (286), 97 states have call predecessors, (286), 96 states have return successors, (284), 276 states have call predecessors, (284), 284 states have call successors, (284) [2022-11-03 03:44:34,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 6569 transitions. [2022-11-03 03:44:34,633 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 6569 transitions. Word has length 116 [2022-11-03 03:44:34,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:34,634 INFO L495 AbstractCegarLoop]: Abstraction has 3859 states and 6569 transitions. [2022-11-03 03:44:34,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:44:34,634 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 6569 transitions. [2022-11-03 03:44:34,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-03 03:44:34,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:34,641 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 03:44:34,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:44:34,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:44:34,860 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:34,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:34,861 INFO L85 PathProgramCache]: Analyzing trace with hash -547859348, now seen corresponding path program 1 times [2022-11-03 03:44:34,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:34,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632358922] [2022-11-03 03:44:34,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:34,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 03:44:35,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:35,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632358922] [2022-11-03 03:44:35,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632358922] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:44:35,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626924310] [2022-11-03 03:44:35,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:35,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:44:35,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:44:35,016 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:44:35,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:44:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:35,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:44:35,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:35,342 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 03:44:35,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:44:35,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626924310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:35,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:44:35,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-03 03:44:35,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356250496] [2022-11-03 03:44:35,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:35,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:35,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:35,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:35,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:44:35,345 INFO L87 Difference]: Start difference. First operand 3859 states and 6569 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:44:36,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:36,189 INFO L93 Difference]: Finished difference Result 8236 states and 13242 transitions. [2022-11-03 03:44:36,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:36,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 116 [2022-11-03 03:44:36,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:36,220 INFO L225 Difference]: With dead ends: 8236 [2022-11-03 03:44:36,221 INFO L226 Difference]: Without dead ends: 6023 [2022-11-03 03:44:36,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:44:36,232 INFO L413 NwaCegarLoop]: 3269 mSDtfsCounter, 3461 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3461 SdHoareTripleChecker+Valid, 3456 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:36,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3461 Valid, 3456 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:44:36,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6023 states. [2022-11-03 03:44:36,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6023 to 6003. [2022-11-03 03:44:36,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6003 states, 5259 states have (on average 1.641186537364518) internal successors, (8631), 5278 states have internal predecessors, (8631), 550 states have call successors, (550), 193 states have call predecessors, (550), 192 states have return successors, (548), 532 states have call predecessors, (548), 548 states have call successors, (548) [2022-11-03 03:44:36,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6003 states to 6003 states and 9729 transitions. [2022-11-03 03:44:36,504 INFO L78 Accepts]: Start accepts. Automaton has 6003 states and 9729 transitions. Word has length 116 [2022-11-03 03:44:36,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:36,504 INFO L495 AbstractCegarLoop]: Abstraction has 6003 states and 9729 transitions. [2022-11-03 03:44:36,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:44:36,506 INFO L276 IsEmpty]: Start isEmpty. Operand 6003 states and 9729 transitions. [2022-11-03 03:44:36,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-03 03:44:36,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:36,518 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 03:44:36,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:44:36,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:44:36,743 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:36,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:36,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1882156246, now seen corresponding path program 1 times [2022-11-03 03:44:36,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:36,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869364085] [2022-11-03 03:44:36,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:36,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:36,954 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 03:44:36,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:36,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869364085] [2022-11-03 03:44:36,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869364085] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:44:36,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043643401] [2022-11-03 03:44:36,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:36,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:44:36,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:44:36,957 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:44:36,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:44:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:37,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:44:37,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:37,243 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 03:44:37,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:44:37,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043643401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:37,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:44:37,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-03 03:44:37,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388633186] [2022-11-03 03:44:37,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:37,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:37,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:37,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:37,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:44:37,247 INFO L87 Difference]: Start difference. First operand 6003 states and 9729 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:44:38,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:38,046 INFO L93 Difference]: Finished difference Result 14620 states and 22794 transitions. [2022-11-03 03:44:38,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:38,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 116 [2022-11-03 03:44:38,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:38,127 INFO L225 Difference]: With dead ends: 14620 [2022-11-03 03:44:38,127 INFO L226 Difference]: Without dead ends: 10263 [2022-11-03 03:44:38,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:44:38,152 INFO L413 NwaCegarLoop]: 3269 mSDtfsCounter, 3467 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3467 SdHoareTripleChecker+Valid, 3456 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:38,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3467 Valid, 3456 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:44:38,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10263 states. [2022-11-03 03:44:38,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10263 to 10227. [2022-11-03 03:44:38,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10227 states, 8779 states have (on average 1.5718191137942819) internal successors, (13799), 8814 states have internal predecessors, (13799), 1062 states have call successors, (1062), 385 states have call predecessors, (1062), 384 states have return successors, (1060), 1028 states have call predecessors, (1060), 1060 states have call successors, (1060) [2022-11-03 03:44:38,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10227 states to 10227 states and 15921 transitions. [2022-11-03 03:44:38,656 INFO L78 Accepts]: Start accepts. Automaton has 10227 states and 15921 transitions. Word has length 116 [2022-11-03 03:44:38,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:38,659 INFO L495 AbstractCegarLoop]: Abstraction has 10227 states and 15921 transitions. [2022-11-03 03:44:38,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:44:38,659 INFO L276 IsEmpty]: Start isEmpty. Operand 10227 states and 15921 transitions. [2022-11-03 03:44:38,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-03 03:44:38,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:38,681 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 03:44:38,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:44:38,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec6c1a8-8d6b-4465-92b8-099a587136df/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 03:44:38,903 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:38,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:38,904 INFO L85 PathProgramCache]: Analyzing trace with hash 193088360, now seen corresponding path program 1 times [2022-11-03 03:44:38,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:38,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589076628] [2022-11-03 03:44:38,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:38,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:39,042 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-03 03:44:39,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:39,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589076628] [2022-11-03 03:44:39,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589076628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:39,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:39,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:44:39,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906837544] [2022-11-03 03:44:39,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:39,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:39,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:39,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:39,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:39,046 INFO L87 Difference]: Start difference. First operand 10227 states and 15921 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:44:40,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:40,411 INFO L93 Difference]: Finished difference Result 16919 states and 26164 transitions. [2022-11-03 03:44:40,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:40,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 116 [2022-11-03 03:44:40,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:40,491 INFO L225 Difference]: With dead ends: 16919 [2022-11-03 03:44:40,492 INFO L226 Difference]: Without dead ends: 12499 [2022-11-03 03:44:40,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:40,516 INFO L413 NwaCegarLoop]: 3355 mSDtfsCounter, 100 mSDsluCounter, 3509 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 6616 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:40,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 6616 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 03:44:40,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12499 states. [2022-11-03 03:44:41,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12499 to 11811. [2022-11-03 03:44:41,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11811 states, 10299 states have (on average 1.5946208369744634) internal successors, (16423), 10334 states have internal predecessors, (16423), 1094 states have call successors, (1094), 417 states have call predecessors, (1094), 416 states have return successors, (1092), 1060 states have call predecessors, (1092), 1092 states have call successors, (1092) [2022-11-03 03:44:41,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11811 states to 11811 states and 18609 transitions. [2022-11-03 03:44:41,287 INFO L78 Accepts]: Start accepts. Automaton has 11811 states and 18609 transitions. Word has length 116 [2022-11-03 03:44:41,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:41,289 INFO L495 AbstractCegarLoop]: Abstraction has 11811 states and 18609 transitions. [2022-11-03 03:44:41,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:44:41,290 INFO L276 IsEmpty]: Start isEmpty. Operand 11811 states and 18609 transitions. [2022-11-03 03:44:41,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-03 03:44:41,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:41,332 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 03:44:41,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:44:41,333 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:41,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:41,334 INFO L85 PathProgramCache]: Analyzing trace with hash -920557115, now seen corresponding path program 1 times [2022-11-03 03:44:41,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:41,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414720728] [2022-11-03 03:44:41,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:41,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:41,516 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-03 03:44:41,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:41,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414720728] [2022-11-03 03:44:41,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414720728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:41,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:41,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:44:41,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077376583] [2022-11-03 03:44:41,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:41,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:41,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:41,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:41,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:41,520 INFO L87 Difference]: Start difference. First operand 11811 states and 18609 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 03:44:43,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:43,126 INFO L93 Difference]: Finished difference Result 31852 states and 49370 transitions. [2022-11-03 03:44:43,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:43,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 157 [2022-11-03 03:44:43,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:43,230 INFO L225 Difference]: With dead ends: 31852 [2022-11-03 03:44:43,230 INFO L226 Difference]: Without dead ends: 21687 [2022-11-03 03:44:43,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:43,267 INFO L413 NwaCegarLoop]: 3271 mSDtfsCounter, 3469 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3469 SdHoareTripleChecker+Valid, 3458 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:43,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3469 Valid, 3458 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 03:44:43,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21687 states. [2022-11-03 03:44:44,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21687 to 21587. [2022-11-03 03:44:44,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21587 states, 18635 states have (on average 1.5527233700026832) internal successors, (28935), 18702 states have internal predecessors, (28935), 2118 states have call successors, (2118), 833 states have call predecessors, (2118), 832 states have return successors, (2116), 2052 states have call predecessors, (2116), 2116 states have call successors, (2116) [2022-11-03 03:44:44,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21587 states to 21587 states and 33169 transitions. [2022-11-03 03:44:44,919 INFO L78 Accepts]: Start accepts. Automaton has 21587 states and 33169 transitions. Word has length 157 [2022-11-03 03:44:44,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:44,921 INFO L495 AbstractCegarLoop]: Abstraction has 21587 states and 33169 transitions. [2022-11-03 03:44:44,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 03:44:44,922 INFO L276 IsEmpty]: Start isEmpty. Operand 21587 states and 33169 transitions. [2022-11-03 03:44:44,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-03 03:44:44,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:44,979 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 03:44:44,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:44:44,979 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:44,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:44,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1562256983, now seen corresponding path program 1 times [2022-11-03 03:44:44,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:44,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121009218] [2022-11-03 03:44:44,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:44,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:45,114 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-03 03:44:45,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:45,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121009218] [2022-11-03 03:44:45,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121009218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:45,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:45,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:44:45,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220844500] [2022-11-03 03:44:45,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:45,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:45,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:45,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:45,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:45,118 INFO L87 Difference]: Start difference. First operand 21587 states and 33169 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 03:44:47,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:47,278 INFO L93 Difference]: Finished difference Result 60892 states and 93082 transitions. [2022-11-03 03:44:47,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:47,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 157 [2022-11-03 03:44:47,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:47,494 INFO L225 Difference]: With dead ends: 60892 [2022-11-03 03:44:47,494 INFO L226 Difference]: Without dead ends: 40951 [2022-11-03 03:44:47,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:47,571 INFO L413 NwaCegarLoop]: 3271 mSDtfsCounter, 3471 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3471 SdHoareTripleChecker+Valid, 3458 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:47,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3471 Valid, 3458 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:44:47,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40951 states. [2022-11-03 03:44:49,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40951 to 40755. [2022-11-03 03:44:49,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40755 states, 34987 states have (on average 1.5239660445308256) internal successors, (53319), 35118 states have internal predecessors, (53319), 4102 states have call successors, (4102), 1665 states have call predecessors, (4102), 1664 states have return successors, (4100), 3972 states have call predecessors, (4100), 4100 states have call successors, (4100) [2022-11-03 03:44:50,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40755 states to 40755 states and 61521 transitions. [2022-11-03 03:44:50,073 INFO L78 Accepts]: Start accepts. Automaton has 40755 states and 61521 transitions. Word has length 157 [2022-11-03 03:44:50,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:50,074 INFO L495 AbstractCegarLoop]: Abstraction has 40755 states and 61521 transitions. [2022-11-03 03:44:50,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 03:44:50,077 INFO L276 IsEmpty]: Start isEmpty. Operand 40755 states and 61521 transitions. [2022-11-03 03:44:50,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-03 03:44:50,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:50,229 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 03:44:50,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:44:50,230 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:50,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:50,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1482217377, now seen corresponding path program 1 times [2022-11-03 03:44:50,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:50,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578875613] [2022-11-03 03:44:50,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:50,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:50,370 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-03 03:44:50,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:50,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578875613] [2022-11-03 03:44:50,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578875613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:50,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:50,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:44:50,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885903705] [2022-11-03 03:44:50,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:50,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:50,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:50,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:50,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:50,374 INFO L87 Difference]: Start difference. First operand 40755 states and 61521 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 03:44:54,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:54,930 INFO L93 Difference]: Finished difference Result 117820 states and 178138 transitions. [2022-11-03 03:44:54,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:54,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 157 [2022-11-03 03:44:54,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:55,354 INFO L225 Difference]: With dead ends: 117820 [2022-11-03 03:44:55,355 INFO L226 Difference]: Without dead ends: 78711 [2022-11-03 03:44:55,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:55,472 INFO L413 NwaCegarLoop]: 3271 mSDtfsCounter, 3473 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3473 SdHoareTripleChecker+Valid, 3458 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:55,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3473 Valid, 3458 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:44:55,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78711 states. [2022-11-03 03:44:59,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78711 to 78323. [2022-11-03 03:44:59,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78323 states, 67051 states have (on average 1.5034376817646269) internal successors, (100807), 67310 states have internal predecessors, (100807), 7942 states have call successors, (7942), 3329 states have call predecessors, (7942), 3328 states have return successors, (7940), 7684 states have call predecessors, (7940), 7940 states have call successors, (7940) [2022-11-03 03:44:59,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78323 states to 78323 states and 116689 transitions. [2022-11-03 03:44:59,400 INFO L78 Accepts]: Start accepts. Automaton has 78323 states and 116689 transitions. Word has length 157 [2022-11-03 03:44:59,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:59,401 INFO L495 AbstractCegarLoop]: Abstraction has 78323 states and 116689 transitions. [2022-11-03 03:44:59,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 03:44:59,401 INFO L276 IsEmpty]: Start isEmpty. Operand 78323 states and 116689 transitions. [2022-11-03 03:44:59,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-03 03:44:59,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:59,595 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 03:44:59,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:44:59,596 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:59,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:59,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1573346230, now seen corresponding path program 1 times [2022-11-03 03:44:59,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:59,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130427679] [2022-11-03 03:44:59,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:59,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:00,101 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-03 03:45:00,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:00,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130427679] [2022-11-03 03:45:00,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130427679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:00,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:00,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:45:00,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214198125] [2022-11-03 03:45:00,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:00,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:45:00,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:00,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:45:00,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:45:00,107 INFO L87 Difference]: Start difference. First operand 78323 states and 116689 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 03:45:06,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:06,860 INFO L93 Difference]: Finished difference Result 229372 states and 343514 transitions. [2022-11-03 03:45:06,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:45:06,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 157 [2022-11-03 03:45:06,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:07,506 INFO L225 Difference]: With dead ends: 229372 [2022-11-03 03:45:07,506 INFO L226 Difference]: Without dead ends: 152695 [2022-11-03 03:45:08,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:45:08,124 INFO L413 NwaCegarLoop]: 3292 mSDtfsCounter, 3476 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3476 SdHoareTripleChecker+Valid, 3479 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:08,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3476 Valid, 3479 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:45:08,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152695 states.