./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a40438206222cb8b2973fadc665b92d328ce78e3a9921112a2f9717aab2538e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 09:48:00,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:48:00,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:48:00,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:48:00,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:48:00,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:48:00,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:48:00,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:48:00,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:48:00,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:48:00,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:48:00,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:48:00,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:48:00,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:48:00,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:48:00,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:48:00,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:48:00,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:48:00,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:48:00,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:48:00,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:48:00,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:48:00,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:48:00,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:48:00,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:48:00,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:48:00,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:48:00,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:48:00,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:48:00,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:48:00,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:48:00,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:48:00,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:48:00,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:48:00,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:48:00,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:48:00,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:48:00,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:48:00,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:48:00,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:48:00,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:48:00,168 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 09:48:00,190 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:48:00,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:48:00,190 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:48:00,190 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:48:00,191 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:48:00,191 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:48:00,191 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:48:00,192 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:48:00,192 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:48:00,192 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 09:48:00,192 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:48:00,192 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:48:00,192 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 09:48:00,193 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 09:48:00,193 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:48:00,193 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 09:48:00,193 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 09:48:00,193 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 09:48:00,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:48:00,194 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 09:48:00,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 09:48:00,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 09:48:00,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:48:00,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:48:00,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:48:00,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:48:00,195 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 09:48:00,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:48:00,195 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:48:00,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:48:00,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:48:00,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:48:00,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:48:00,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:48:00,196 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 09:48:00,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:48:00,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:48:00,197 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 09:48:00,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 09:48:00,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:48:00,197 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:48:00,197 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_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a40438206222cb8b2973fadc665b92d328ce78e3a9921112a2f9717aab2538e [2022-12-14 09:48:00,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:48:00,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:48:00,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:48:00,397 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:48:00,397 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:48:00,398 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c [2022-12-14 09:48:03,090 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:48:03,543 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:48:03,543 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c [2022-12-14 09:48:03,570 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/data/bd6e474eb/5b4821d2f2424261b44e1e33b4aeac0b/FLAGcfb0ffe78 [2022-12-14 09:48:03,581 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/data/bd6e474eb/5b4821d2f2424261b44e1e33b4aeac0b [2022-12-14 09:48:03,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:48:03,584 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:48:03,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:48:03,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:48:03,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:48:03,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:48:03" (1/1) ... [2022-12-14 09:48:03,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be44695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:48:03, skipping insertion in model container [2022-12-14 09:48:03,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:48:03" (1/1) ... [2022-12-14 09:48:03,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:48:03,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:48:05,094 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c[382357,382370] [2022-12-14 09:48:05,113 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c[383339,383352] [2022-12-14 09:48:05,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:48:05,369 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:48:06,144 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c[382357,382370] [2022-12-14 09:48:06,146 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c[383339,383352] [2022-12-14 09:48:06,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:48:06,207 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:48:06,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:48:06 WrapperNode [2022-12-14 09:48:06,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:48:06,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:48:06,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:48:06,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:48:06,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:48:06" (1/1) ... [2022-12-14 09:48:06,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:48:06" (1/1) ... [2022-12-14 09:48:06,538 INFO L138 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13260 [2022-12-14 09:48:06,538 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:48:06,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:48:06,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:48:06,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:48:06,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:48:06" (1/1) ... [2022-12-14 09:48:06,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:48:06" (1/1) ... [2022-12-14 09:48:06,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:48:06" (1/1) ... [2022-12-14 09:48:06,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:48:06" (1/1) ... [2022-12-14 09:48:06,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:48:06" (1/1) ... [2022-12-14 09:48:06,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:48:06" (1/1) ... [2022-12-14 09:48:06,789 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:48:06" (1/1) ... [2022-12-14 09:48:06,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:48:06" (1/1) ... [2022-12-14 09:48:06,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:48:06,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:48:06,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:48:06,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:48:06,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:48:06" (1/1) ... [2022-12-14 09:48:06,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:48:06,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:48:06,872 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:48:06,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:48:06,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 09:48:06,900 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-12-14 09:48:06,900 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-12-14 09:48:06,901 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-14 09:48:06,901 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-14 09:48:06,901 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-12-14 09:48:06,901 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-12-14 09:48:06,901 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-12-14 09:48:06,901 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-12-14 09:48:06,901 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-12-14 09:48:06,901 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-12-14 09:48:06,901 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-12-14 09:48:06,901 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-12-14 09:48:06,901 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-12-14 09:48:06,902 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-12-14 09:48:06,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 09:48:06,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:48:06,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:48:07,007 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:48:07,008 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:48:12,564 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:48:13,994 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:48:13,994 INFO L300 CfgBuilder]: Removed 17 assume(true) statements. [2022-12-14 09:48:13,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:48:13 BoogieIcfgContainer [2022-12-14 09:48:13,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:48:14,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:48:14,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:48:14,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:48:14,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:48:03" (1/3) ... [2022-12-14 09:48:14,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf42db5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:48:14, skipping insertion in model container [2022-12-14 09:48:14,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:48:06" (2/3) ... [2022-12-14 09:48:14,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf42db5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:48:14, skipping insertion in model container [2022-12-14 09:48:14,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:48:13" (3/3) ... [2022-12-14 09:48:14,005 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.15.cil.c [2022-12-14 09:48:14,020 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:48:14,020 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 09:48:14,102 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:48:14,107 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;@448d7734, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:48:14,107 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 09:48:14,115 INFO L276 IsEmpty]: Start isEmpty. Operand has 1848 states, 1809 states have (on average 1.9541182974018796) internal successors, (3535), 1814 states have internal predecessors, (3535), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-12-14 09:48:14,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 09:48:14,123 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:48:14,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:48:14,124 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:48:14,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:48:14,127 INFO L85 PathProgramCache]: Analyzing trace with hash -447462559, now seen corresponding path program 1 times [2022-12-14 09:48:14,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:48:14,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113663247] [2022-12-14 09:48:14,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:48:14,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:48:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:48:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:48:14,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:48:14,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113663247] [2022-12-14 09:48:14,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113663247] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:48:14,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:48:14,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 09:48:14,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571974051] [2022-12-14 09:48:14,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:48:14,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 09:48:14,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:48:14,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 09:48:14,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:48:14,512 INFO L87 Difference]: Start difference. First operand has 1848 states, 1809 states have (on average 1.9541182974018796) internal successors, (3535), 1814 states have internal predecessors, (3535), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2022-12-14 09:48:15,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:48:15,361 INFO L93 Difference]: Finished difference Result 3877 states and 7503 transitions. [2022-12-14 09:48:15,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 09:48:15,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 71 [2022-12-14 09:48:15,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:48:15,378 INFO L225 Difference]: With dead ends: 3877 [2022-12-14 09:48:15,379 INFO L226 Difference]: Without dead ends: 2028 [2022-12-14 09:48:15,385 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 [2022-12-14 09:48:15,387 INFO L413 NwaCegarLoop]: 3549 mSDtfsCounter, 3820 mSDsluCounter, 3445 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3820 SdHoareTripleChecker+Valid, 6994 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 09:48:15,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3820 Valid, 6994 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 09:48:15,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2022-12-14 09:48:15,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 2027. [2022-12-14 09:48:15,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2027 states, 1961 states have (on average 1.9163691993880674) internal successors, (3758), 1965 states have internal predecessors, (3758), 52 states have call successors, (52), 13 states have call predecessors, (52), 12 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 09:48:15,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 3860 transitions. [2022-12-14 09:48:15,479 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 3860 transitions. Word has length 71 [2022-12-14 09:48:15,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:48:15,480 INFO L495 AbstractCegarLoop]: Abstraction has 2027 states and 3860 transitions. [2022-12-14 09:48:15,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2022-12-14 09:48:15,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 3860 transitions. [2022-12-14 09:48:15,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-14 09:48:15,485 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:48:15,485 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, 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] [2022-12-14 09:48:15,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 09:48:15,486 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:48:15,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:48:15,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1996472600, now seen corresponding path program 1 times [2022-12-14 09:48:15,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:48:15,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601906149] [2022-12-14 09:48:15,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:48:15,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:48:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:48:15,679 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 09:48:15,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:48:15,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601906149] [2022-12-14 09:48:15,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601906149] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:48:15,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111815257] [2022-12-14 09:48:15,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:48:15,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:48:15,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:48:15,681 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:48:15,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 09:48:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:48:15,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 09:48:15,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:48:15,955 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 09:48:15,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:48:15,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111815257] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:48:15,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:48:15,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-14 09:48:15,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085763439] [2022-12-14 09:48:15,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:48:15,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:48:15,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:48:15,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:48:15,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:48:15,959 INFO L87 Difference]: Start difference. First operand 2027 states and 3860 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 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) [2022-12-14 09:48:16,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:48:16,352 INFO L93 Difference]: Finished difference Result 2782 states and 5049 transitions. [2022-12-14 09:48:16,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:48:16,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 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 144 [2022-12-14 09:48:16,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:48:16,364 INFO L225 Difference]: With dead ends: 2782 [2022-12-14 09:48:16,364 INFO L226 Difference]: Without dead ends: 2401 [2022-12-14 09:48:16,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:48:16,367 INFO L413 NwaCegarLoop]: 3376 mSDtfsCounter, 3533 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3533 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 09:48:16,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3533 Valid, 3624 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 09:48:16,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2022-12-14 09:48:16,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 2395. [2022-12-14 09:48:16,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2395 states, 2273 states have (on average 1.86229652441707) internal successors, (4233), 2278 states have internal predecessors, (4233), 96 states have call successors, (96), 25 states have call predecessors, (96), 24 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2022-12-14 09:48:16,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2395 states to 2395 states and 4423 transitions. [2022-12-14 09:48:16,431 INFO L78 Accepts]: Start accepts. Automaton has 2395 states and 4423 transitions. Word has length 144 [2022-12-14 09:48:16,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:48:16,432 INFO L495 AbstractCegarLoop]: Abstraction has 2395 states and 4423 transitions. [2022-12-14 09:48:16,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 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) [2022-12-14 09:48:16,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2395 states and 4423 transitions. [2022-12-14 09:48:16,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-14 09:48:16,438 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:48:16,438 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, 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] [2022-12-14 09:48:16,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 09:48:16,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-12-14 09:48:16,641 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:48:16,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:48:16,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1311812390, now seen corresponding path program 1 times [2022-12-14 09:48:16,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:48:16,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775450002] [2022-12-14 09:48:16,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:48:16,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:48:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:48:16,905 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 09:48:16,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:48:16,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775450002] [2022-12-14 09:48:16,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775450002] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:48:16,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632807214] [2022-12-14 09:48:16,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:48:16,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:48:16,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:48:16,907 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:48:16,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 09:48:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:48:17,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 1117 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 09:48:17,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:48:17,161 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 09:48:17,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:48:17,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632807214] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:48:17,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:48:17,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-14 09:48:17,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740384481] [2022-12-14 09:48:17,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:48:17,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:48:17,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:48:17,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:48:17,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:48:17,163 INFO L87 Difference]: Start difference. First operand 2395 states and 4423 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 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) [2022-12-14 09:48:17,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:48:17,550 INFO L93 Difference]: Finished difference Result 3880 states and 6758 transitions. [2022-12-14 09:48:17,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:48:17,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 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 144 [2022-12-14 09:48:17,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:48:17,560 INFO L225 Difference]: With dead ends: 3880 [2022-12-14 09:48:17,560 INFO L226 Difference]: Without dead ends: 3131 [2022-12-14 09:48:17,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:48:17,563 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3524 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3524 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 09:48:17,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3524 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 09:48:17,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3131 states. [2022-12-14 09:48:17,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3131 to 3123. [2022-12-14 09:48:17,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3123 states, 2891 states have (on average 1.7886544448287789) internal successors, (5171), 2898 states have internal predecessors, (5171), 182 states have call successors, (182), 49 states have call predecessors, (182), 48 states have return successors, (180), 176 states have call predecessors, (180), 180 states have call successors, (180) [2022-12-14 09:48:17,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 5533 transitions. [2022-12-14 09:48:17,636 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 5533 transitions. Word has length 144 [2022-12-14 09:48:17,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:48:17,636 INFO L495 AbstractCegarLoop]: Abstraction has 3123 states and 5533 transitions. [2022-12-14 09:48:17,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 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) [2022-12-14 09:48:17,636 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 5533 transitions. [2022-12-14 09:48:17,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-14 09:48:17,639 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:48:17,639 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, 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] [2022-12-14 09:48:17,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 09:48:17,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-14 09:48:17,841 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:48:17,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:48:17,843 INFO L85 PathProgramCache]: Analyzing trace with hash 575660328, now seen corresponding path program 1 times [2022-12-14 09:48:17,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:48:17,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194468818] [2022-12-14 09:48:17,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:48:17,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:48:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:48:18,081 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 09:48:18,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:48:18,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194468818] [2022-12-14 09:48:18,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194468818] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:48:18,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682426265] [2022-12-14 09:48:18,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:48:18,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:48:18,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:48:18,083 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:48:18,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 09:48:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:48:18,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 09:48:18,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:48:18,315 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-14 09:48:18,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:48:18,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682426265] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:48:18,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:48:18,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-14 09:48:18,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684152811] [2022-12-14 09:48:18,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:48:18,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:48:18,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:48:18,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:48:18,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:48:18,317 INFO L87 Difference]: Start difference. First operand 3123 states and 5533 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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) [2022-12-14 09:48:18,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:48:18,695 INFO L93 Difference]: Finished difference Result 6052 states and 10126 transitions. [2022-12-14 09:48:18,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:48:18,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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 144 [2022-12-14 09:48:18,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:48:18,715 INFO L225 Difference]: With dead ends: 6052 [2022-12-14 09:48:18,715 INFO L226 Difference]: Without dead ends: 4575 [2022-12-14 09:48:18,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:48:18,723 INFO L413 NwaCegarLoop]: 3363 mSDtfsCounter, 3545 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3545 SdHoareTripleChecker+Valid, 3611 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 09:48:18,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3545 Valid, 3611 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 09:48:18,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4575 states. [2022-12-14 09:48:18,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4575 to 4563. [2022-12-14 09:48:18,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4563 states, 4115 states have (on average 1.7066828675577157) internal successors, (7023), 4126 states have internal predecessors, (7023), 350 states have call successors, (350), 97 states have call predecessors, (350), 96 states have return successors, (348), 340 states have call predecessors, (348), 348 states have call successors, (348) [2022-12-14 09:48:18,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 7721 transitions. [2022-12-14 09:48:18,894 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 7721 transitions. Word has length 144 [2022-12-14 09:48:18,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:48:18,894 INFO L495 AbstractCegarLoop]: Abstraction has 4563 states and 7721 transitions. [2022-12-14 09:48:18,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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) [2022-12-14 09:48:18,895 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 7721 transitions. [2022-12-14 09:48:18,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-14 09:48:18,902 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:48:18,902 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, 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] [2022-12-14 09:48:18,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 09:48:19,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:48:19,103 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:48:19,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:48:19,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1443241882, now seen corresponding path program 1 times [2022-12-14 09:48:19,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:48:19,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056322924] [2022-12-14 09:48:19,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:48:19,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:48:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:48:19,236 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 09:48:19,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:48:19,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056322924] [2022-12-14 09:48:19,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056322924] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:48:19,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064504799] [2022-12-14 09:48:19,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:48:19,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:48:19,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:48:19,238 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:48:19,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 09:48:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:48:19,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 09:48:19,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:48:19,482 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-14 09:48:19,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:48:19,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064504799] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:48:19,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:48:19,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-14 09:48:19,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208461992] [2022-12-14 09:48:19,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:48:19,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:48:19,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:48:19,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:48:19,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:48:19,485 INFO L87 Difference]: Start difference. First operand 4563 states and 7721 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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) [2022-12-14 09:48:19,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:48:19,990 INFO L93 Difference]: Finished difference Result 10348 states and 16762 transitions. [2022-12-14 09:48:19,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:48:19,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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 144 [2022-12-14 09:48:19,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:48:20,013 INFO L225 Difference]: With dead ends: 10348 [2022-12-14 09:48:20,013 INFO L226 Difference]: Without dead ends: 7431 [2022-12-14 09:48:20,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:48:20,021 INFO L413 NwaCegarLoop]: 3373 mSDtfsCounter, 3551 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3551 SdHoareTripleChecker+Valid, 3621 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 09:48:20,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3551 Valid, 3621 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 09:48:20,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7431 states. [2022-12-14 09:48:20,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7431 to 7411. [2022-12-14 09:48:20,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7411 states, 6539 states have (on average 1.6331243309374521) internal successors, (10679), 6558 states have internal predecessors, (10679), 678 states have call successors, (678), 193 states have call predecessors, (678), 192 states have return successors, (676), 660 states have call predecessors, (676), 676 states have call successors, (676) [2022-12-14 09:48:20,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7411 states to 7411 states and 12033 transitions. [2022-12-14 09:48:20,201 INFO L78 Accepts]: Start accepts. Automaton has 7411 states and 12033 transitions. Word has length 144 [2022-12-14 09:48:20,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:48:20,201 INFO L495 AbstractCegarLoop]: Abstraction has 7411 states and 12033 transitions. [2022-12-14 09:48:20,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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) [2022-12-14 09:48:20,201 INFO L276 IsEmpty]: Start isEmpty. Operand 7411 states and 12033 transitions. [2022-12-14 09:48:20,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-14 09:48:20,209 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:48:20,209 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, 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] [2022-12-14 09:48:20,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 09:48:20,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:48:20,411 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:48:20,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:48:20,412 INFO L85 PathProgramCache]: Analyzing trace with hash 866842916, now seen corresponding path program 1 times [2022-12-14 09:48:20,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:48:20,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146260023] [2022-12-14 09:48:20,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:48:20,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:48:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:48:20,618 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 09:48:20,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:48:20,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146260023] [2022-12-14 09:48:20,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146260023] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:48:20,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370998884] [2022-12-14 09:48:20,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:48:20,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:48:20,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:48:20,619 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:48:20,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 09:48:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:48:20,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 09:48:20,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:48:20,813 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 09:48:20,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:48:20,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370998884] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:48:20,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:48:20,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-14 09:48:20,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560877293] [2022-12-14 09:48:20,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:48:20,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:48:20,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:48:20,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:48:20,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:48:20,816 INFO L87 Difference]: Start difference. First operand 7411 states and 12033 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 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) [2022-12-14 09:48:21,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:48:21,347 INFO L93 Difference]: Finished difference Result 18844 states and 29834 transitions. [2022-12-14 09:48:21,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:48:21,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 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 144 [2022-12-14 09:48:21,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:48:21,382 INFO L225 Difference]: With dead ends: 18844 [2022-12-14 09:48:21,382 INFO L226 Difference]: Without dead ends: 13079 [2022-12-14 09:48:21,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:48:21,395 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3539 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3539 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 09:48:21,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3539 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 09:48:21,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13079 states. [2022-12-14 09:48:21,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13079 to 13043. [2022-12-14 09:48:21,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13043 states, 11339 states have (on average 1.578181497486551) internal successors, (17895), 11374 states have internal predecessors, (17895), 1318 states have call successors, (1318), 385 states have call predecessors, (1318), 384 states have return successors, (1316), 1284 states have call predecessors, (1316), 1316 states have call successors, (1316) [2022-12-14 09:48:21,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13043 states to 13043 states and 20529 transitions. [2022-12-14 09:48:21,705 INFO L78 Accepts]: Start accepts. Automaton has 13043 states and 20529 transitions. Word has length 144 [2022-12-14 09:48:21,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:48:21,705 INFO L495 AbstractCegarLoop]: Abstraction has 13043 states and 20529 transitions. [2022-12-14 09:48:21,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 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) [2022-12-14 09:48:21,705 INFO L276 IsEmpty]: Start isEmpty. Operand 13043 states and 20529 transitions. [2022-12-14 09:48:21,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-14 09:48:21,721 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:48:21,722 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, 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] [2022-12-14 09:48:21,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 09:48:21,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:48:21,923 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:48:21,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:48:21,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1167900386, now seen corresponding path program 1 times [2022-12-14 09:48:21,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:48:21,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895380867] [2022-12-14 09:48:21,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:48:21,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:48:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:48:22,142 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 09:48:22,142 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:48:22,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895380867] [2022-12-14 09:48:22,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895380867] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:48:22,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028871959] [2022-12-14 09:48:22,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:48:22,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:48:22,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:48:22,144 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:48:22,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 09:48:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:48:22,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 09:48:22,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:48:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 09:48:22,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:48:22,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028871959] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:48:22,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:48:22,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-14 09:48:22,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511791175] [2022-12-14 09:48:22,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:48:22,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:48:22,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:48:22,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:48:22,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:48:22,361 INFO L87 Difference]: Start difference. First operand 13043 states and 20529 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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) [2022-12-14 09:48:23,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:48:23,228 INFO L93 Difference]: Finished difference Result 35644 states and 55578 transitions. [2022-12-14 09:48:23,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:48:23,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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 144 [2022-12-14 09:48:23,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:48:23,289 INFO L225 Difference]: With dead ends: 35644 [2022-12-14 09:48:23,289 INFO L226 Difference]: Without dead ends: 24247 [2022-12-14 09:48:23,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:48:23,324 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3554 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3554 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 09:48:23,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3554 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 09:48:23,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24247 states. [2022-12-14 09:48:23,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24247 to 24179. [2022-12-14 09:48:23,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24179 states, 20843 states have (on average 1.5417646212157559) internal successors, (32135), 20910 states have internal predecessors, (32135), 2566 states have call successors, (2566), 769 states have call predecessors, (2566), 768 states have return successors, (2564), 2500 states have call predecessors, (2564), 2564 states have call successors, (2564) [2022-12-14 09:48:23,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24179 states to 24179 states and 37265 transitions. [2022-12-14 09:48:23,938 INFO L78 Accepts]: Start accepts. Automaton has 24179 states and 37265 transitions. Word has length 144 [2022-12-14 09:48:23,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:48:23,939 INFO L495 AbstractCegarLoop]: Abstraction has 24179 states and 37265 transitions. [2022-12-14 09:48:23,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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) [2022-12-14 09:48:23,939 INFO L276 IsEmpty]: Start isEmpty. Operand 24179 states and 37265 transitions. [2022-12-14 09:48:23,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-14 09:48:23,964 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:48:23,964 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, 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] [2022-12-14 09:48:23,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 09:48:24,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 09:48:24,165 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:48:24,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:48:24,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1651833500, now seen corresponding path program 1 times [2022-12-14 09:48:24,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:48:24,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195796583] [2022-12-14 09:48:24,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:48:24,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:48:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:48:24,255 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 09:48:24,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:48:24,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195796583] [2022-12-14 09:48:24,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195796583] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:48:24,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193030931] [2022-12-14 09:48:24,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:48:24,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:48:24,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:48:24,257 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:48:24,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 09:48:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:48:24,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 09:48:24,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:48:24,492 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 09:48:24,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:48:24,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193030931] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:48:24,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:48:24,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-14 09:48:24,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274750445] [2022-12-14 09:48:24,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:48:24,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:48:24,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:48:24,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:48:24,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:48:24,495 INFO L87 Difference]: Start difference. First operand 24179 states and 37265 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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) [2022-12-14 09:48:25,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:48:25,793 INFO L93 Difference]: Finished difference Result 68860 states and 106266 transitions. [2022-12-14 09:48:25,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:48:25,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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 144 [2022-12-14 09:48:25,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:48:25,911 INFO L225 Difference]: With dead ends: 68860 [2022-12-14 09:48:25,911 INFO L226 Difference]: Without dead ends: 46327 [2022-12-14 09:48:25,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:48:25,956 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3527 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3527 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 09:48:25,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3527 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 09:48:25,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46327 states. [2022-12-14 09:48:27,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46327 to 46195. [2022-12-14 09:48:27,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46195 states, 39659 states have (on average 1.5187221059532514) internal successors, (60231), 39790 states have internal predecessors, (60231), 4998 states have call successors, (4998), 1537 states have call predecessors, (4998), 1536 states have return successors, (4996), 4868 states have call predecessors, (4996), 4996 states have call successors, (4996) [2022-12-14 09:48:27,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46195 states to 46195 states and 70225 transitions. [2022-12-14 09:48:27,288 INFO L78 Accepts]: Start accepts. Automaton has 46195 states and 70225 transitions. Word has length 144 [2022-12-14 09:48:27,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:48:27,288 INFO L495 AbstractCegarLoop]: Abstraction has 46195 states and 70225 transitions. [2022-12-14 09:48:27,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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) [2022-12-14 09:48:27,289 INFO L276 IsEmpty]: Start isEmpty. Operand 46195 states and 70225 transitions. [2022-12-14 09:48:27,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-14 09:48:27,407 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:48:27,407 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, 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] [2022-12-14 09:48:27,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 09:48:27,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 09:48:27,608 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:48:27,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:48:27,608 INFO L85 PathProgramCache]: Analyzing trace with hash 2040068130, now seen corresponding path program 1 times [2022-12-14 09:48:27,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:48:27,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135845735] [2022-12-14 09:48:27,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:48:27,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:48:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:48:27,942 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 09:48:27,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:48:27,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135845735] [2022-12-14 09:48:27,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135845735] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:48:27,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:48:27,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 09:48:27,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977829467] [2022-12-14 09:48:27,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:48:27,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 09:48:27,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:48:27,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 09:48:27,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:48:27,945 INFO L87 Difference]: Start difference. First operand 46195 states and 70225 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-14 09:48:31,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:48:31,584 INFO L93 Difference]: Finished difference Result 158075 states and 238040 transitions. [2022-12-14 09:48:31,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 09:48:31,585 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 144 [2022-12-14 09:48:31,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:48:31,937 INFO L225 Difference]: With dead ends: 158075 [2022-12-14 09:48:31,937 INFO L226 Difference]: Without dead ends: 113527 [2022-12-14 09:48:32,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 09:48:32,013 INFO L413 NwaCegarLoop]: 3342 mSDtfsCounter, 4428 mSDsluCounter, 9823 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4450 SdHoareTripleChecker+Valid, 13165 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 09:48:32,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4450 Valid, 13165 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 09:48:32,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113527 states. [2022-12-14 09:48:35,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113527 to 89203. [2022-12-14 09:48:35,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89203 states, 76395 states have (on average 1.5038549643301262) internal successors, (114887), 76654 states have internal predecessors, (114887), 9734 states have call successors, (9734), 3073 states have call predecessors, (9734), 3072 states have return successors, (9732), 9476 states have call predecessors, (9732), 9732 states have call successors, (9732) [2022-12-14 09:48:35,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89203 states to 89203 states and 134353 transitions. [2022-12-14 09:48:35,481 INFO L78 Accepts]: Start accepts. Automaton has 89203 states and 134353 transitions. Word has length 144 [2022-12-14 09:48:35,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:48:35,482 INFO L495 AbstractCegarLoop]: Abstraction has 89203 states and 134353 transitions. [2022-12-14 09:48:35,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-14 09:48:35,482 INFO L276 IsEmpty]: Start isEmpty. Operand 89203 states and 134353 transitions. [2022-12-14 09:48:35,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-12-14 09:48:35,589 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:48:35,590 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 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] [2022-12-14 09:48:35,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 09:48:35,590 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:48:35,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:48:35,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1435034326, now seen corresponding path program 1 times [2022-12-14 09:48:35,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:48:35,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720291722] [2022-12-14 09:48:35,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:48:35,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:48:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:48:35,864 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 44 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 09:48:35,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:48:35,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720291722] [2022-12-14 09:48:35,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720291722] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:48:35,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522595370] [2022-12-14 09:48:35,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:48:35,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:48:35,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:48:35,866 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:48:35,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 09:48:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:48:36,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 09:48:36,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:48:36,106 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-12-14 09:48:36,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:48:36,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522595370] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:48:36,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:48:36,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-12-14 09:48:36,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239459769] [2022-12-14 09:48:36,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:48:36,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:48:36,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:48:36,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:48:36,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:48:36,109 INFO L87 Difference]: Start difference. First operand 89203 states and 134353 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 09:48:39,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:48:39,423 INFO L93 Difference]: Finished difference Result 157175 states and 240212 transitions. [2022-12-14 09:48:39,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:48:39,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 167 [2022-12-14 09:48:39,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:48:39,825 INFO L225 Difference]: With dead ends: 157175 [2022-12-14 09:48:39,825 INFO L226 Difference]: Without dead ends: 112371 [2022-12-14 09:48:39,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:48:39,889 INFO L413 NwaCegarLoop]: 3452 mSDtfsCounter, 134 mSDsluCounter, 3326 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 6778 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 09:48:39,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 6778 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 09:48:39,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112371 states. [2022-12-14 09:48:43,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112371 to 106227. [2022-12-14 09:48:43,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106227 states, 92907 states have (on average 1.5451903516419645) internal successors, (143559), 93166 states have internal predecessors, (143559), 9990 states have call successors, (9990), 3329 states have call predecessors, (9990), 3328 states have return successors, (9988), 9732 states have call predecessors, (9988), 9988 states have call successors, (9988) [2022-12-14 09:48:44,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106227 states to 106227 states and 163537 transitions. [2022-12-14 09:48:44,233 INFO L78 Accepts]: Start accepts. Automaton has 106227 states and 163537 transitions. Word has length 167 [2022-12-14 09:48:44,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:48:44,233 INFO L495 AbstractCegarLoop]: Abstraction has 106227 states and 163537 transitions. [2022-12-14 09:48:44,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 09:48:44,234 INFO L276 IsEmpty]: Start isEmpty. Operand 106227 states and 163537 transitions. [2022-12-14 09:48:44,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-12-14 09:48:44,380 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:48:44,381 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, 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, 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] [2022-12-14 09:48:44,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-14 09:48:44,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:48:44,582 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:48:44,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:48:44,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1339484937, now seen corresponding path program 1 times [2022-12-14 09:48:44,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:48:44,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3845101] [2022-12-14 09:48:44,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:48:44,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:48:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:48:44,844 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 10 proven. 87 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 09:48:44,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:48:44,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3845101] [2022-12-14 09:48:44,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3845101] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:48:44,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267862622] [2022-12-14 09:48:44,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:48:44,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:48:44,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:48:44,846 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:48:44,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 09:48:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:48:45,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 09:48:45,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:48:45,211 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 09:48:45,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:48:45,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267862622] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:48:45,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:48:45,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2022-12-14 09:48:45,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202981632] [2022-12-14 09:48:45,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:48:45,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:48:45,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:48:45,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:48:45,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:48:45,213 INFO L87 Difference]: Start difference. First operand 106227 states and 163537 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:48:51,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:48:51,052 INFO L93 Difference]: Finished difference Result 313852 states and 487642 transitions. [2022-12-14 09:48:51,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:48:51,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 220 [2022-12-14 09:48:51,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:48:51,851 INFO L225 Difference]: With dead ends: 313852 [2022-12-14 09:48:51,851 INFO L226 Difference]: Without dead ends: 209271 [2022-12-14 09:48:52,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:48:52,045 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3475 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3475 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 09:48:52,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3475 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 09:48:52,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209271 states. [2022-12-14 09:48:58,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209271 to 208499. [2022-12-14 09:48:58,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208499 states, 182379 states have (on average 1.5367065287121873) internal successors, (280263), 182894 states have internal predecessors, (280263), 19462 states have call successors, (19462), 6657 states have call predecessors, (19462), 6656 states have return successors, (19460), 18948 states have call predecessors, (19460), 19460 states have call successors, (19460) [2022-12-14 09:48:59,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208499 states to 208499 states and 319185 transitions. [2022-12-14 09:48:59,260 INFO L78 Accepts]: Start accepts. Automaton has 208499 states and 319185 transitions. Word has length 220 [2022-12-14 09:48:59,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:48:59,261 INFO L495 AbstractCegarLoop]: Abstraction has 208499 states and 319185 transitions. [2022-12-14 09:48:59,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:48:59,261 INFO L276 IsEmpty]: Start isEmpty. Operand 208499 states and 319185 transitions. [2022-12-14 09:48:59,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-12-14 09:48:59,577 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:48:59,577 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, 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, 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] [2022-12-14 09:48:59,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 09:48:59,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:48:59,780 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:48:59,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:48:59,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1640053208, now seen corresponding path program 1 times [2022-12-14 09:48:59,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:48:59,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641293216] [2022-12-14 09:48:59,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:48:59,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:48:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:49:00,021 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 10 proven. 87 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 09:49:00,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:49:00,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641293216] [2022-12-14 09:49:00,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641293216] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:49:00,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461650977] [2022-12-14 09:49:00,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:49:00,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:49:00,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:49:00,022 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:49:00,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 09:49:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:49:00,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 09:49:00,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:49:00,328 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-12-14 09:49:00,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:49:00,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461650977] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:49:00,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:49:00,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2022-12-14 09:49:00,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913824523] [2022-12-14 09:49:00,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:49:00,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:49:00,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:49:00,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:49:00,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:49:00,330 INFO L87 Difference]: Start difference. First operand 208499 states and 319185 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:49:12,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:49:12,891 INFO L93 Difference]: Finished difference Result 619132 states and 957658 transitions. [2022-12-14 09:49:12,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:49:12,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 220 [2022-12-14 09:49:12,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:49:14,160 INFO L225 Difference]: With dead ends: 619132 [2022-12-14 09:49:14,160 INFO L226 Difference]: Without dead ends: 412279 [2022-12-14 09:49:14,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:49:14,537 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3475 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3475 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 09:49:14,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3475 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 09:49:14,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412279 states. [2022-12-14 09:49:27,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412279 to 410739. [2022-12-14 09:49:27,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410739 states, 359531 states have (on average 1.530012711004058) internal successors, (550087), 360558 states have internal predecessors, (550087), 37894 states have call successors, (37894), 13313 states have call predecessors, (37894), 13312 states have return successors, (37892), 36868 states have call predecessors, (37892), 37892 states have call successors, (37892) [2022-12-14 09:49:29,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410739 states to 410739 states and 625873 transitions. [2022-12-14 09:49:29,513 INFO L78 Accepts]: Start accepts. Automaton has 410739 states and 625873 transitions. Word has length 220 [2022-12-14 09:49:29,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:49:29,513 INFO L495 AbstractCegarLoop]: Abstraction has 410739 states and 625873 transitions. [2022-12-14 09:49:29,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:49:29,514 INFO L276 IsEmpty]: Start isEmpty. Operand 410739 states and 625873 transitions. [2022-12-14 09:49:30,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-12-14 09:49:30,350 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:49:30,351 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, 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, 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] [2022-12-14 09:49:30,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-14 09:49:30,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 09:49:30,553 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:49:30,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:49:30,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1001465109, now seen corresponding path program 1 times [2022-12-14 09:49:30,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:49:30,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161061883] [2022-12-14 09:49:30,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:49:30,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:49:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:49:30,817 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 10 proven. 87 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 09:49:30,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:49:30,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161061883] [2022-12-14 09:49:30,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161061883] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:49:30,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811134055] [2022-12-14 09:49:30,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:49:30,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:49:30,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:49:30,818 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:49:30,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 09:49:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:49:31,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 09:49:31,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:49:31,232 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-12-14 09:49:31,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:49:31,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811134055] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:49:31,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:49:31,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2022-12-14 09:49:31,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204479530] [2022-12-14 09:49:31,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:49:31,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:49:31,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:49:31,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:49:31,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:49:31,233 INFO L87 Difference]: Start difference. First operand 410739 states and 625873 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:49:55,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:49:55,921 INFO L93 Difference]: Finished difference Result 1222780 states and 1883354 transitions. [2022-12-14 09:49:55,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:49:55,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 220 [2022-12-14 09:49:55,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:49:58,718 INFO L225 Difference]: With dead ends: 1222780 [2022-12-14 09:49:58,718 INFO L226 Difference]: Without dead ends: 813687 [2022-12-14 09:49:59,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:49:59,547 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3475 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3475 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 09:49:59,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3475 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 09:50:00,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813687 states. [2022-12-14 09:50:25,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813687 to 810611. [2022-12-14 09:50:26,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810611 states, 710251 states have (on average 1.5242034154122979) internal successors, (1082567), 712302 states have internal predecessors, (1082567), 73734 states have call successors, (73734), 26625 states have call predecessors, (73734), 26624 states have return successors, (73732), 71684 states have call predecessors, (73732), 73732 states have call successors, (73732) [2022-12-14 09:50:29,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810611 states to 810611 states and 1230033 transitions. [2022-12-14 09:50:29,394 INFO L78 Accepts]: Start accepts. Automaton has 810611 states and 1230033 transitions. Word has length 220 [2022-12-14 09:50:29,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:50:29,395 INFO L495 AbstractCegarLoop]: Abstraction has 810611 states and 1230033 transitions. [2022-12-14 09:50:29,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:50:29,395 INFO L276 IsEmpty]: Start isEmpty. Operand 810611 states and 1230033 transitions. [2022-12-14 09:50:31,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-12-14 09:50:31,558 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:50:31,559 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, 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, 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] [2022-12-14 09:50:31,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 09:50:31,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 09:50:31,761 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:50:31,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:50:31,763 INFO L85 PathProgramCache]: Analyzing trace with hash -784762196, now seen corresponding path program 1 times [2022-12-14 09:50:31,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:50:31,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575504849] [2022-12-14 09:50:31,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:50:31,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:50:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:50:32,187 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 10 proven. 87 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 09:50:32,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:50:32,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575504849] [2022-12-14 09:50:32,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575504849] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:50:32,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945999379] [2022-12-14 09:50:32,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:50:32,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:50:32,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:50:32,189 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:50:32,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bc5a1e2-9692-42f2-ae3c-d39e1ab80db4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 09:50:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:50:32,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 09:50:32,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:50:32,506 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-12-14 09:50:32,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:50:32,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945999379] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:50:32,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:50:32,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2022-12-14 09:50:32,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474083163] [2022-12-14 09:50:32,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:50:32,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:50:32,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:50:32,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:50:32,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:50:32,509 INFO L87 Difference]: Start difference. First operand 810611 states and 1230033 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:51:26,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:51:26,618 INFO L93 Difference]: Finished difference Result 2416252 states and 3706074 transitions. [2022-12-14 09:51:26,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:51:26,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 220 [2022-12-14 09:51:26,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:51:32,630 INFO L225 Difference]: With dead ends: 2416252 [2022-12-14 09:51:32,630 INFO L226 Difference]: Without dead ends: 1607287 [2022-12-14 09:51:34,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:51:34,929 INFO L413 NwaCegarLoop]: 3342 mSDtfsCounter, 3475 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3475 SdHoareTripleChecker+Valid, 3590 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 09:51:34,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3475 Valid, 3590 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 09:51:36,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607287 states.