./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe004_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b79f0cd-b2ef-40d2-bf07-9f08605856e3/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b79f0cd-b2ef-40d2-bf07-9f08605856e3/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b79f0cd-b2ef-40d2-bf07-9f08605856e3/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b79f0cd-b2ef-40d2-bf07-9f08605856e3/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe004_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b79f0cd-b2ef-40d2-bf07-9f08605856e3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b79f0cd-b2ef-40d2-bf07-9f08605856e3/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 28abced7878c2be916ea5a54f12b603c21b6525f16f4a0aadbf776b589e0bc49 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:50:30,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:50:30,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:50:30,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:50:30,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:50:30,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:50:30,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:50:30,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:50:30,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:50:30,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:50:30,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:50:30,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:50:30,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:50:30,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:50:30,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:50:30,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:50:30,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:50:30,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:50:30,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:50:30,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:50:30,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:50:30,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:50:30,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:50:30,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:50:30,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:50:30,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:50:30,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:50:30,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:50:30,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:50:30,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:50:30,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:50:30,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:50:30,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:50:30,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:50:30,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:50:30,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:50:30,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:50:30,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:50:30,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:50:30,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:50:30,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:50:30,254 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b79f0cd-b2ef-40d2-bf07-9f08605856e3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 01:50:30,278 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:50:30,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:50:30,278 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:50:30,279 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:50:30,280 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:50:30,280 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:50:30,280 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:50:30,281 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:50:30,281 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:50:30,281 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:50:30,281 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:50:30,282 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:50:30,282 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:50:30,282 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:50:30,283 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:50:30,283 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:50:30,283 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:50:30,284 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:50:30,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:50:30,285 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:50:30,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:50:30,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:50:30,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:50:30,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:50:30,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:50:30,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:50:30,287 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:50:30,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:50:30,287 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:50:30,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:50:30,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:50:30,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:50:30,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:50:30,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:50:30,289 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:50:30,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:50:30,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:50:30,290 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:50:30,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:50:30,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:50:30,291 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:50:30,291 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_9b79f0cd-b2ef-40d2-bf07-9f08605856e3/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b79f0cd-b2ef-40d2-bf07-9f08605856e3/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28abced7878c2be916ea5a54f12b603c21b6525f16f4a0aadbf776b589e0bc49 [2022-11-03 01:50:30,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:50:30,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:50:30,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:50:30,646 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:50:30,647 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:50:30,648 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b79f0cd-b2ef-40d2-bf07-9f08605856e3/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/pthread-wmm/safe004_tso.i [2022-11-03 01:50:30,747 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b79f0cd-b2ef-40d2-bf07-9f08605856e3/bin/utaipan-7li7fVZpFI/data/9be20cddd/70742ec9fe58408b915a35add8e902d7/FLAG5e0a95fdd [2022-11-03 01:50:31,394 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:50:31,395 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b79f0cd-b2ef-40d2-bf07-9f08605856e3/sv-benchmarks/c/pthread-wmm/safe004_tso.i [2022-11-03 01:50:31,415 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b79f0cd-b2ef-40d2-bf07-9f08605856e3/bin/utaipan-7li7fVZpFI/data/9be20cddd/70742ec9fe58408b915a35add8e902d7/FLAG5e0a95fdd [2022-11-03 01:50:31,681 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b79f0cd-b2ef-40d2-bf07-9f08605856e3/bin/utaipan-7li7fVZpFI/data/9be20cddd/70742ec9fe58408b915a35add8e902d7 [2022-11-03 01:50:31,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:50:31,687 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:50:31,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:50:31,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:50:31,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:50:31,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:50:31" (1/1) ... [2022-11-03 01:50:31,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ae8f4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:31, skipping insertion in model container [2022-11-03 01:50:31,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:50:31" (1/1) ... [2022-11-03 01:50:31,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:50:31,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:50:31,992 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b79f0cd-b2ef-40d2-bf07-9f08605856e3/sv-benchmarks/c/pthread-wmm/safe004_tso.i[945,958] [2022-11-03 01:50:32,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:50:32,157 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:50:32,171 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b79f0cd-b2ef-40d2-bf07-9f08605856e3/sv-benchmarks/c/pthread-wmm/safe004_tso.i[945,958] [2022-11-03 01:50:32,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:50:32,239 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:50:32,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:32 WrapperNode [2022-11-03 01:50:32,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:50:32,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:50:32,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:50:32,241 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:50:32,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:32" (1/1) ... [2022-11-03 01:50:32,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:32" (1/1) ... [2022-11-03 01:50:32,319 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-11-03 01:50:32,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:50:32,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:50:32,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:50:32,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:50:32,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:32" (1/1) ... [2022-11-03 01:50:32,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:32" (1/1) ... [2022-11-03 01:50:32,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:32" (1/1) ... [2022-11-03 01:50:32,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:32" (1/1) ... [2022-11-03 01:50:32,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:32" (1/1) ... [2022-11-03 01:50:32,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:32" (1/1) ... [2022-11-03 01:50:32,352 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:32" (1/1) ... [2022-11-03 01:50:32,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:32" (1/1) ... [2022-11-03 01:50:32,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:50:32,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:50:32,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:50:32,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:50:32,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:32" (1/1) ... [2022-11-03 01:50:32,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:50:32,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b79f0cd-b2ef-40d2-bf07-9f08605856e3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:50:32,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b79f0cd-b2ef-40d2-bf07-9f08605856e3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:50:32,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b79f0cd-b2ef-40d2-bf07-9f08605856e3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:50:32,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:50:32,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-03 01:50:32,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:50:32,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:50:32,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:50:32,454 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-03 01:50:32,454 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-03 01:50:32,455 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-03 01:50:32,455 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-03 01:50:32,455 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-03 01:50:32,455 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-03 01:50:32,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:50:32,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-03 01:50:32,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:50:32,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:50:32,457 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 01:50:32,596 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:50:32,599 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:50:32,812 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:50:32,819 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:50:32,819 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 01:50:32,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:50:32 BoogieIcfgContainer [2022-11-03 01:50:32,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:50:32,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:50:32,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:50:32,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:50:32,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:50:31" (1/3) ... [2022-11-03 01:50:32,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5124f909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:50:32, skipping insertion in model container [2022-11-03 01:50:32,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:32" (2/3) ... [2022-11-03 01:50:32,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5124f909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:50:32, skipping insertion in model container [2022-11-03 01:50:32,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:50:32" (3/3) ... [2022-11-03 01:50:32,838 INFO L112 eAbstractionObserver]: Analyzing ICFG safe004_tso.i [2022-11-03 01:50:32,859 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 01:50:32,871 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:50:32,871 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:50:32,871 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 01:50:32,973 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-03 01:50:33,024 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 01:50:33,040 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 91 transitions, 197 flow [2022-11-03 01:50:33,047 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 91 transitions, 197 flow [2022-11-03 01:50:33,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 197 flow [2022-11-03 01:50:33,107 INFO L130 PetriNetUnfolder]: 2/88 cut-off events. [2022-11-03 01:50:33,108 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-03 01:50:33,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-11-03 01:50:33,114 INFO L118 LiptonReduction]: Number of co-enabled transitions 1620 [2022-11-03 01:50:36,252 INFO L133 LiptonReduction]: Checked pairs total: 2721 [2022-11-03 01:50:36,253 INFO L135 LiptonReduction]: Total number of compositions: 81 [2022-11-03 01:50:36,265 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2022-11-03 01:50:36,320 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:36,338 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:50:36,345 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;@2224ee88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:50:36,345 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-03 01:50:36,349 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:36,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 01:50:36,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:36,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:36,357 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-03 01:50:36,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:36,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1773595244, now seen corresponding path program 1 times [2022-11-03 01:50:36,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:50:36,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950823884] [2022-11-03 01:50:36,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:36,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:50:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:36,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:50:36,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:50:36,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950823884] [2022-11-03 01:50:36,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950823884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:36,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:36,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:50:36,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582129893] [2022-11-03 01:50:36,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:36,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 01:50:36,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:50:36,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 01:50:36,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:50:36,668 INFO L87 Difference]: Start difference. First operand has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:36,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:36,740 INFO L93 Difference]: Finished difference Result 298 states and 864 transitions. [2022-11-03 01:50:36,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 01:50:36,742 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 01:50:36,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:36,757 INFO L225 Difference]: With dead ends: 298 [2022-11-03 01:50:36,758 INFO L226 Difference]: Without dead ends: 298 [2022-11-03 01:50:36,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:50:36,762 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:36,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:50:36,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-11-03 01:50:36,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2022-11-03 01:50:36,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.909090909090909) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:36,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2022-11-03 01:50:36,874 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2022-11-03 01:50:36,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:36,876 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2022-11-03 01:50:36,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:36,877 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2022-11-03 01:50:36,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 01:50:36,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:36,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:36,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:50:36,881 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-03 01:50:36,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:36,882 INFO L85 PathProgramCache]: Analyzing trace with hash 853119497, now seen corresponding path program 1 times [2022-11-03 01:50:36,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:50:36,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966123094] [2022-11-03 01:50:36,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:36,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:50:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:37,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:50:37,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:50:37,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966123094] [2022-11-03 01:50:37,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966123094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:37,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:37,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:50:37,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417577596] [2022-11-03 01:50:37,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:37,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:50:37,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:50:37,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:50:37,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:50:37,260 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:37,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:37,406 INFO L93 Difference]: Finished difference Result 487 states and 1377 transitions. [2022-11-03 01:50:37,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:50:37,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-03 01:50:37,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:37,415 INFO L225 Difference]: With dead ends: 487 [2022-11-03 01:50:37,415 INFO L226 Difference]: Without dead ends: 312 [2022-11-03 01:50:37,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:50:37,419 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 19 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:37,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 12 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:50:37,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-11-03 01:50:37,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 262. [2022-11-03 01:50:37,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 2.574712643678161) internal successors, (672), 261 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:37,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 672 transitions. [2022-11-03 01:50:37,456 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 672 transitions. Word has length 9 [2022-11-03 01:50:37,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:37,456 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 672 transitions. [2022-11-03 01:50:37,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:37,457 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 672 transitions. [2022-11-03 01:50:37,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 01:50:37,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:37,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:37,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:50:37,461 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-03 01:50:37,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:37,463 INFO L85 PathProgramCache]: Analyzing trace with hash 691866386, now seen corresponding path program 1 times [2022-11-03 01:50:37,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:50:37,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725431868] [2022-11-03 01:50:37,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:37,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:50:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:37,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:50:37,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:50:37,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725431868] [2022-11-03 01:50:37,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725431868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:37,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:37,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:50:37,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603720674] [2022-11-03 01:50:37,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:37,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:50:37,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:50:37,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:50:37,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:50:37,787 INFO L87 Difference]: Start difference. First operand 262 states and 672 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:37,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:37,914 INFO L93 Difference]: Finished difference Result 343 states and 850 transitions. [2022-11-03 01:50:37,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:50:37,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-03 01:50:37,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:37,917 INFO L225 Difference]: With dead ends: 343 [2022-11-03 01:50:37,918 INFO L226 Difference]: Without dead ends: 248 [2022-11-03 01:50:37,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:50:37,922 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 43 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:37,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 11 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:50:37,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-03 01:50:37,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 212. [2022-11-03 01:50:37,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 2.5071090047393363) internal successors, (529), 211 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:37,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 529 transitions. [2022-11-03 01:50:37,963 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 529 transitions. Word has length 10 [2022-11-03 01:50:37,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:37,964 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 529 transitions. [2022-11-03 01:50:37,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:37,964 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 529 transitions. [2022-11-03 01:50:37,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 01:50:37,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:37,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:37,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:50:37,966 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-03 01:50:37,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:37,966 INFO L85 PathProgramCache]: Analyzing trace with hash -538866786, now seen corresponding path program 1 times [2022-11-03 01:50:37,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:50:37,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802052409] [2022-11-03 01:50:37,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:37,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:50:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:38,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:50:38,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:50:38,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802052409] [2022-11-03 01:50:38,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802052409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:38,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:38,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:50:38,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796170373] [2022-11-03 01:50:38,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:38,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:50:38,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:50:38,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:50:38,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:50:38,233 INFO L87 Difference]: Start difference. First operand 212 states and 529 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:38,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:38,357 INFO L93 Difference]: Finished difference Result 279 states and 651 transitions. [2022-11-03 01:50:38,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:50:38,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 01:50:38,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:38,359 INFO L225 Difference]: With dead ends: 279 [2022-11-03 01:50:38,359 INFO L226 Difference]: Without dead ends: 152 [2022-11-03 01:50:38,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:50:38,361 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 36 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:38,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 12 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:50:38,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-03 01:50:38,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-11-03 01:50:38,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.2582781456953644) internal successors, (341), 151 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:38,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 341 transitions. [2022-11-03 01:50:38,369 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 341 transitions. Word has length 11 [2022-11-03 01:50:38,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:38,369 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 341 transitions. [2022-11-03 01:50:38,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:38,370 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 341 transitions. [2022-11-03 01:50:38,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 01:50:38,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:38,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:38,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:50:38,373 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-03 01:50:38,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:38,373 INFO L85 PathProgramCache]: Analyzing trace with hash -883138289, now seen corresponding path program 1 times [2022-11-03 01:50:38,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:50:38,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209433130] [2022-11-03 01:50:38,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:38,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:50:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:38,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:50:38,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:50:38,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209433130] [2022-11-03 01:50:38,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209433130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:38,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:38,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:50:38,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118909604] [2022-11-03 01:50:38,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:38,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:50:38,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:50:38,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:50:38,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:50:38,596 INFO L87 Difference]: Start difference. First operand 152 states and 341 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:38,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:38,702 INFO L93 Difference]: Finished difference Result 177 states and 384 transitions. [2022-11-03 01:50:38,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:50:38,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 01:50:38,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:38,704 INFO L225 Difference]: With dead ends: 177 [2022-11-03 01:50:38,704 INFO L226 Difference]: Without dead ends: 140 [2022-11-03 01:50:38,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:50:38,705 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 29 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:38,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 13 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:50:38,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-03 01:50:38,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 124. [2022-11-03 01:50:38,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 2.16260162601626) internal successors, (266), 123 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:38,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 266 transitions. [2022-11-03 01:50:38,710 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 266 transitions. Word has length 12 [2022-11-03 01:50:38,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:38,710 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 266 transitions. [2022-11-03 01:50:38,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:38,711 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 266 transitions. [2022-11-03 01:50:38,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 01:50:38,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:38,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:38,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:50:38,712 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-03 01:50:38,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:38,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1684587961, now seen corresponding path program 1 times [2022-11-03 01:50:38,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:50:38,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438580914] [2022-11-03 01:50:38,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:38,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:50:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:38,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:50:38,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:50:38,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438580914] [2022-11-03 01:50:38,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438580914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:38,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:38,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:50:38,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333806326] [2022-11-03 01:50:38,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:38,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:50:38,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:50:38,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:50:38,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:50:38,858 INFO L87 Difference]: Start difference. First operand 124 states and 266 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:38,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:38,984 INFO L93 Difference]: Finished difference Result 130 states and 267 transitions. [2022-11-03 01:50:38,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:50:38,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 01:50:38,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:38,986 INFO L225 Difference]: With dead ends: 130 [2022-11-03 01:50:38,986 INFO L226 Difference]: Without dead ends: 64 [2022-11-03 01:50:38,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:50:38,988 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 28 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:38,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 11 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:50:38,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-03 01:50:38,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-11-03 01:50:38,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.0317460317460316) internal successors, (128), 63 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:38,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 128 transitions. [2022-11-03 01:50:38,991 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 128 transitions. Word has length 13 [2022-11-03 01:50:38,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:38,992 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 128 transitions. [2022-11-03 01:50:38,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:38,992 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 128 transitions. [2022-11-03 01:50:38,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:50:38,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:38,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:38,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:50:38,993 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-03 01:50:38,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:38,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1258080921, now seen corresponding path program 1 times [2022-11-03 01:50:38,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:50:38,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571775497] [2022-11-03 01:50:38,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:38,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:50:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:39,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:50:39,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:50:39,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571775497] [2022-11-03 01:50:39,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571775497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:39,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:39,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:50:39,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694317126] [2022-11-03 01:50:39,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:39,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:50:39,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:50:39,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:50:39,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:50:39,124 INFO L87 Difference]: Start difference. First operand 64 states and 128 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:39,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:39,153 INFO L93 Difference]: Finished difference Result 52 states and 91 transitions. [2022-11-03 01:50:39,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:50:39,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 01:50:39,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:39,154 INFO L225 Difference]: With dead ends: 52 [2022-11-03 01:50:39,154 INFO L226 Difference]: Without dead ends: 52 [2022-11-03 01:50:39,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:50:39,155 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:39,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 5 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:50:39,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-03 01:50:39,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-03 01:50:39,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.7843137254901962) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:39,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 91 transitions. [2022-11-03 01:50:39,159 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 91 transitions. Word has length 14 [2022-11-03 01:50:39,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:39,159 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 91 transitions. [2022-11-03 01:50:39,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:39,159 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 91 transitions. [2022-11-03 01:50:39,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 01:50:39,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:39,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:39,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 01:50:39,160 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-03 01:50:39,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:39,161 INFO L85 PathProgramCache]: Analyzing trace with hash 296889019, now seen corresponding path program 1 times [2022-11-03 01:50:39,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:50:39,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180915543] [2022-11-03 01:50:39,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:39,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:50:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:39,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:50:39,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:50:39,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180915543] [2022-11-03 01:50:39,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180915543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:39,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:39,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:50:39,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040293653] [2022-11-03 01:50:39,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:39,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:50:39,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:50:39,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:50:39,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:50:39,293 INFO L87 Difference]: Start difference. First operand 52 states and 91 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:39,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:39,329 INFO L93 Difference]: Finished difference Result 34 states and 49 transitions. [2022-11-03 01:50:39,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:50:39,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-03 01:50:39,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:39,330 INFO L225 Difference]: With dead ends: 34 [2022-11-03 01:50:39,330 INFO L226 Difference]: Without dead ends: 34 [2022-11-03 01:50:39,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:50:39,331 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:39,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 5 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:50:39,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-03 01:50:39,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-03 01:50:39,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:39,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2022-11-03 01:50:39,334 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 15 [2022-11-03 01:50:39,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:39,334 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2022-11-03 01:50:39,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:39,334 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2022-11-03 01:50:39,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 01:50:39,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:39,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:39,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 01:50:39,335 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-03 01:50:39,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:39,336 INFO L85 PathProgramCache]: Analyzing trace with hash 613039844, now seen corresponding path program 1 times [2022-11-03 01:50:39,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:50:39,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259061555] [2022-11-03 01:50:39,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:39,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:50:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:50:39,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:50:39,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259061555] [2022-11-03 01:50:39,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259061555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:39,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:39,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:50:39,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029612483] [2022-11-03 01:50:39,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:39,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:50:39,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:50:39,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:50:39,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:50:39,482 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:39,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:39,509 INFO L93 Difference]: Finished difference Result 26 states and 38 transitions. [2022-11-03 01:50:39,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:50:39,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-03 01:50:39,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:39,510 INFO L225 Difference]: With dead ends: 26 [2022-11-03 01:50:39,510 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 01:50:39,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:50:39,511 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 16 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:39,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 3 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:50:39,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 01:50:39,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 01:50:39,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:39,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 01:50:39,513 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2022-11-03 01:50:39,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:39,513 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 01:50:39,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:39,514 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 01:50:39,514 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 01:50:39,517 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-03 01:50:39,517 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-03 01:50:39,517 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-03 01:50:39,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-03 01:50:39,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 01:50:39,520 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:39,523 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-03 01:50:39,523 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 01:50:39,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:50:39 BasicIcfg [2022-11-03 01:50:39,526 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 01:50:39,527 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 01:50:39,527 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 01:50:39,527 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 01:50:39,528 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:50:32" (3/4) ... [2022-11-03 01:50:39,531 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 01:50:39,542 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-03 01:50:39,543 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-03 01:50:39,543 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-03 01:50:39,550 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-03 01:50:39,550 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-03 01:50:39,551 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-03 01:50:39,551 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 01:50:39,589 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b79f0cd-b2ef-40d2-bf07-9f08605856e3/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 01:50:39,589 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 01:50:39,590 INFO L158 Benchmark]: Toolchain (without parser) took 7902.66ms. Allocated memory was 98.6MB in the beginning and 151.0MB in the end (delta: 52.4MB). Free memory was 64.7MB in the beginning and 91.2MB in the end (delta: -26.6MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. [2022-11-03 01:50:39,590 INFO L158 Benchmark]: CDTParser took 1.16ms. Allocated memory is still 98.6MB. Free memory is still 52.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:50:39,590 INFO L158 Benchmark]: CACSL2BoogieTranslator took 548.90ms. Allocated memory is still 98.6MB. Free memory was 64.5MB in the beginning and 64.5MB in the end (delta: -21.1kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 01:50:39,591 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.05ms. Allocated memory is still 98.6MB. Free memory was 64.5MB in the beginning and 62.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:50:39,591 INFO L158 Benchmark]: Boogie Preprocessor took 35.81ms. Allocated memory is still 98.6MB. Free memory was 62.4MB in the beginning and 61.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:50:39,591 INFO L158 Benchmark]: RCFGBuilder took 465.25ms. Allocated memory is still 98.6MB. Free memory was 61.0MB in the beginning and 47.8MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 01:50:39,592 INFO L158 Benchmark]: TraceAbstraction took 6702.57ms. Allocated memory was 98.6MB in the beginning and 151.0MB in the end (delta: 52.4MB). Free memory was 47.1MB in the beginning and 93.3MB in the end (delta: -46.2MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2022-11-03 01:50:39,592 INFO L158 Benchmark]: Witness Printer took 62.35ms. Allocated memory is still 151.0MB. Free memory was 93.3MB in the beginning and 91.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:50:39,594 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.16ms. Allocated memory is still 98.6MB. Free memory is still 52.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 548.90ms. Allocated memory is still 98.6MB. Free memory was 64.5MB in the beginning and 64.5MB in the end (delta: -21.1kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.05ms. Allocated memory is still 98.6MB. Free memory was 64.5MB in the beginning and 62.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.81ms. Allocated memory is still 98.6MB. Free memory was 62.4MB in the beginning and 61.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 465.25ms. Allocated memory is still 98.6MB. Free memory was 61.0MB in the beginning and 47.8MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6702.57ms. Allocated memory was 98.6MB in the beginning and 151.0MB in the end (delta: 52.4MB). Free memory was 47.1MB in the beginning and 93.3MB in the end (delta: -46.2MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * Witness Printer took 62.35ms. Allocated memory is still 151.0MB. Free memory was 93.3MB in the beginning and 91.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 99 PlacesBefore, 32 PlacesAfterwards, 91 TransitionsBefore, 23 TransitionsAfterwards, 1620 CoEnabledTransitionPairs, 5 FixpointIterations, 22 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 81 TotalNumberOfCompositions, 2721 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1526, positive: 1450, positive conditional: 0, positive unconditional: 1450, negative: 76, negative conditional: 0, negative unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1078, positive: 1031, positive conditional: 0, positive unconditional: 1031, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1078, positive: 1024, positive conditional: 0, positive unconditional: 1024, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 54, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 170, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 139, negative conditional: 0, negative unconditional: 139, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1526, positive: 419, positive conditional: 0, positive unconditional: 419, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 1078, unknown conditional: 0, unknown unconditional: 1078] , Statistics on independence cache: Total cache size (in pairs): 73, Positive cache size: 56, Positive conditional cache size: 0, Positive unconditional cache size: 56, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 114 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 6.5s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 188 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 188 mSDsluCounter, 75 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 223 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 436 IncrementalHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 39 mSDtfsCounter, 436 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 102 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 494 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-03 01:50:39,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b79f0cd-b2ef-40d2-bf07-9f08605856e3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE