./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_801c45ff-a581-43ee-9635-7284a09b85a7/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801c45ff-a581-43ee-9635-7284a09b85a7/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801c45ff-a581-43ee-9635-7284a09b85a7/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801c45ff-a581-43ee-9635-7284a09b85a7/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801c45ff-a581-43ee-9635-7284a09b85a7/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801c45ff-a581-43ee-9635-7284a09b85a7/bin/uautomizer-vX5HgA9Q3a --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e0191a7c0154db5e6d5798f5b20e5814ce0ff555e18a7acf1f1e5e323a36576 --- 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-b5237d8 [2022-11-21 17:17:36,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:17:36,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:17:36,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:17:36,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:17:36,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:17:36,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:17:36,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:17:36,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:17:36,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:17:36,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:17:36,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:17:36,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:17:36,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:17:36,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:17:36,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:17:36,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:17:36,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:17:36,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:17:36,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:17:36,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:17:36,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:17:36,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:17:36,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:17:36,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:17:36,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:17:36,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:17:36,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:17:36,406 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:17:36,407 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:17:36,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:17:36,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:17:36,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:17:36,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:17:36,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:17:36,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:17:36,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:17:36,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:17:36,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:17:36,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:17:36,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:17:36,421 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801c45ff-a581-43ee-9635-7284a09b85a7/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 17:17:36,464 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:17:36,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:17:36,465 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:17:36,466 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:17:36,467 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:17:36,467 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:17:36,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:17:36,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:17:36,469 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:17:36,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:17:36,470 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:17:36,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:17:36,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:17:36,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:17:36,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:17:36,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:17:36,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:17:36,473 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:17:36,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:17:36,473 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:17:36,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:17:36,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:17:36,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:17:36,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:17:36,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:17:36,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:17:36,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:17:36,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:17:36,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:17:36,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:17:36,477 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:17:36,477 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:17:36,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:17:36,478 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_801c45ff-a581-43ee-9635-7284a09b85a7/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801c45ff-a581-43ee-9635-7284a09b85a7/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e0191a7c0154db5e6d5798f5b20e5814ce0ff555e18a7acf1f1e5e323a36576 [2022-11-21 17:17:36,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:17:36,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:17:36,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:17:36,849 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:17:36,850 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:17:36,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801c45ff-a581-43ee-9635-7284a09b85a7/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i [2022-11-21 17:17:39,858 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:17:40,294 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:17:40,295 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801c45ff-a581-43ee-9635-7284a09b85a7/sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i [2022-11-21 17:17:40,310 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801c45ff-a581-43ee-9635-7284a09b85a7/bin/uautomizer-vX5HgA9Q3a/data/51bb08f2a/aea290b3378240849cdb091f8fbd6f80/FLAGe4e57dd43 [2022-11-21 17:17:40,330 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801c45ff-a581-43ee-9635-7284a09b85a7/bin/uautomizer-vX5HgA9Q3a/data/51bb08f2a/aea290b3378240849cdb091f8fbd6f80 [2022-11-21 17:17:40,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:17:40,337 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:17:40,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:17:40,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:17:40,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:17:40,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:17:40" (1/1) ... [2022-11-21 17:17:40,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20cae1f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:40, skipping insertion in model container [2022-11-21 17:17:40,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:17:40" (1/1) ... [2022-11-21 17:17:40,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:17:40,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:17:40,598 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801c45ff-a581-43ee-9635-7284a09b85a7/sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i[967,980] [2022-11-21 17:17:40,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:17:40,828 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:17:40,844 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801c45ff-a581-43ee-9635-7284a09b85a7/sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i[967,980] [2022-11-21 17:17:40,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:17:40,938 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:17:40,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:40 WrapperNode [2022-11-21 17:17:40,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:17:40,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:17:40,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:17:40,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:17:40,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:40" (1/1) ... [2022-11-21 17:17:40,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:40" (1/1) ... [2022-11-21 17:17:41,005 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 141 [2022-11-21 17:17:41,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:17:41,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:17:41,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:17:41,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:17:41,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:40" (1/1) ... [2022-11-21 17:17:41,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:40" (1/1) ... [2022-11-21 17:17:41,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:40" (1/1) ... [2022-11-21 17:17:41,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:40" (1/1) ... [2022-11-21 17:17:41,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:40" (1/1) ... [2022-11-21 17:17:41,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:40" (1/1) ... [2022-11-21 17:17:41,066 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:40" (1/1) ... [2022-11-21 17:17:41,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:40" (1/1) ... [2022-11-21 17:17:41,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:17:41,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:17:41,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:17:41,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:17:41,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:40" (1/1) ... [2022-11-21 17:17:41,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:17:41,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801c45ff-a581-43ee-9635-7284a09b85a7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:17:41,119 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801c45ff-a581-43ee-9635-7284a09b85a7/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:17:41,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801c45ff-a581-43ee-9635-7284a09b85a7/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:17:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:17:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 17:17:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:17:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:17:41,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:17:41,172 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-21 17:17:41,172 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-21 17:17:41,172 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-21 17:17:41,174 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-21 17:17:41,174 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-21 17:17:41,174 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-21 17:17:41,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:17:41,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 17:17:41,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:17:41,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:17:41,177 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 17:17:41,397 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:17:41,399 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:17:41,823 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:17:42,066 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:17:42,066 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 17:17:42,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:17:42 BoogieIcfgContainer [2022-11-21 17:17:42,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:17:42,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:17:42,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:17:42,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:17:42,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:17:40" (1/3) ... [2022-11-21 17:17:42,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a94d45c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:17:42, skipping insertion in model container [2022-11-21 17:17:42,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:17:40" (2/3) ... [2022-11-21 17:17:42,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a94d45c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:17:42, skipping insertion in model container [2022-11-21 17:17:42,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:17:42" (3/3) ... [2022-11-21 17:17:42,081 INFO L112 eAbstractionObserver]: Analyzing ICFG safe030_power.opt_pso.opt_rmo.opt.i [2022-11-21 17:17:42,092 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 17:17:42,103 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:17:42,103 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-21 17:17:42,103 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 17:17:42,166 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 17:17:42,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 112 transitions, 239 flow [2022-11-21 17:17:42,267 INFO L130 PetriNetUnfolder]: 2/109 cut-off events. [2022-11-21 17:17:42,268 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:17:42,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 109 events. 2/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2022-11-21 17:17:42,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 112 transitions, 239 flow [2022-11-21 17:17:42,279 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 109 transitions, 227 flow [2022-11-21 17:17:42,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:17:42,298 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=PETRI_NET, 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;@438176c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:17:42,298 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-21 17:17:42,318 INFO L130 PetriNetUnfolder]: 0/70 cut-off events. [2022-11-21 17:17:42,319 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:17:42,319 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:17:42,320 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:17:42,320 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 17:17:42,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:42,326 INFO L85 PathProgramCache]: Analyzing trace with hash -769285622, now seen corresponding path program 1 times [2022-11-21 17:17:42,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:42,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028453092] [2022-11-21 17:17:42,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:42,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:43,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:17:43,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:17:43,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028453092] [2022-11-21 17:17:43,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028453092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:17:43,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:17:43,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:17:43,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33226155] [2022-11-21 17:17:43,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:17:43,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:17:43,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:43,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:17:43,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:17:43,154 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 112 [2022-11-21 17:17:43,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 109 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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) [2022-11-21 17:17:43,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:17:43,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 112 [2022-11-21 17:17:43,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:17:43,372 INFO L130 PetriNetUnfolder]: 17/241 cut-off events. [2022-11-21 17:17:43,372 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-21 17:17:43,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 241 events. 17/241 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 748 event pairs, 7 based on Foata normal form. 8/237 useless extension candidates. Maximal degree in co-relation 243. Up to 27 conditions per place. [2022-11-21 17:17:43,378 INFO L137 encePairwiseOnDemand]: 107/112 looper letters, 10 selfloop transitions, 2 changer transitions 0/108 dead transitions. [2022-11-21 17:17:43,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 108 transitions, 249 flow [2022-11-21 17:17:43,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:17:43,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:17:43,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2022-11-21 17:17:43,402 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9345238095238095 [2022-11-21 17:17:43,403 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 314 transitions. [2022-11-21 17:17:43,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 314 transitions. [2022-11-21 17:17:43,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:17:43,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 314 transitions. [2022-11-21 17:17:43,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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) [2022-11-21 17:17:43,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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) [2022-11-21 17:17:43,428 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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) [2022-11-21 17:17:43,431 INFO L175 Difference]: Start difference. First operand has 117 places, 109 transitions, 227 flow. Second operand 3 states and 314 transitions. [2022-11-21 17:17:43,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 108 transitions, 249 flow [2022-11-21 17:17:43,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 108 transitions, 246 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 17:17:43,442 INFO L231 Difference]: Finished difference. Result has 114 places, 105 transitions, 220 flow [2022-11-21 17:17:43,445 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=114, PETRI_TRANSITIONS=105} [2022-11-21 17:17:43,451 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, -3 predicate places. [2022-11-21 17:17:43,452 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 105 transitions, 220 flow [2022-11-21 17:17:43,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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) [2022-11-21 17:17:43,453 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:17:43,453 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:17:43,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:17:43,454 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 17:17:43,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:43,457 INFO L85 PathProgramCache]: Analyzing trace with hash 267662581, now seen corresponding path program 1 times [2022-11-21 17:17:43,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:43,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55167879] [2022-11-21 17:17:43,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:43,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:44,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:17:44,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:17:44,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55167879] [2022-11-21 17:17:44,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55167879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:17:44,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:17:44,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:17:44,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353093003] [2022-11-21 17:17:44,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:17:44,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:17:44,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:44,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:17:44,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:17:44,872 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 112 [2022-11-21 17:17:44,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 105 transitions, 220 flow. Second operand has 7 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 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) [2022-11-21 17:17:44,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:17:44,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 112 [2022-11-21 17:17:44,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:17:46,426 INFO L130 PetriNetUnfolder]: 1603/4419 cut-off events. [2022-11-21 17:17:46,426 INFO L131 PetriNetUnfolder]: For 178/178 co-relation queries the response was YES. [2022-11-21 17:17:46,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7116 conditions, 4419 events. 1603/4419 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 37946 event pairs, 136 based on Foata normal form. 0/4283 useless extension candidates. Maximal degree in co-relation 7058. Up to 998 conditions per place. [2022-11-21 17:17:46,459 INFO L137 encePairwiseOnDemand]: 97/112 looper letters, 38 selfloop transitions, 13 changer transitions 93/210 dead transitions. [2022-11-21 17:17:46,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 210 transitions, 726 flow [2022-11-21 17:17:46,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 17:17:46,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 17:17:46,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1176 transitions. [2022-11-21 17:17:46,466 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8076923076923077 [2022-11-21 17:17:46,466 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1176 transitions. [2022-11-21 17:17:46,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1176 transitions. [2022-11-21 17:17:46,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:17:46,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1176 transitions. [2022-11-21 17:17:46,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 90.46153846153847) internal successors, (1176), 13 states have internal predecessors, (1176), 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) [2022-11-21 17:17:46,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 112.0) internal successors, (1568), 14 states have internal predecessors, (1568), 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) [2022-11-21 17:17:46,477 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 112.0) internal successors, (1568), 14 states have internal predecessors, (1568), 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) [2022-11-21 17:17:46,477 INFO L175 Difference]: Start difference. First operand has 114 places, 105 transitions, 220 flow. Second operand 13 states and 1176 transitions. [2022-11-21 17:17:46,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 210 transitions, 726 flow [2022-11-21 17:17:46,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 210 transitions, 700 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:17:46,487 INFO L231 Difference]: Finished difference. Result has 136 places, 103 transitions, 332 flow [2022-11-21 17:17:46,488 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=332, PETRI_PLACES=136, PETRI_TRANSITIONS=103} [2022-11-21 17:17:46,489 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 19 predicate places. [2022-11-21 17:17:46,489 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 103 transitions, 332 flow [2022-11-21 17:17:46,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 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) [2022-11-21 17:17:46,490 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:17:46,491 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:17:46,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:17:46,491 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 17:17:46,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:46,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1354632550, now seen corresponding path program 1 times [2022-11-21 17:17:46,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:46,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906741752] [2022-11-21 17:17:46,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:46,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:48,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:17:48,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:17:48,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906741752] [2022-11-21 17:17:48,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906741752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:17:48,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:17:48,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-21 17:17:48,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031594535] [2022-11-21 17:17:48,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:17:48,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 17:17:48,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:48,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 17:17:48,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-11-21 17:17:48,743 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 112 [2022-11-21 17:17:48,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 103 transitions, 332 flow. Second operand has 13 states, 13 states have (on average 81.53846153846153) internal successors, (1060), 13 states have internal predecessors, (1060), 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) [2022-11-21 17:17:48,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:17:48,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 112 [2022-11-21 17:17:48,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:17:50,185 INFO L130 PetriNetUnfolder]: 1035/2272 cut-off events. [2022-11-21 17:17:50,186 INFO L131 PetriNetUnfolder]: For 5130/9117 co-relation queries the response was YES. [2022-11-21 17:17:50,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7777 conditions, 2272 events. 1035/2272 cut-off events. For 5130/9117 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 15181 event pairs, 52 based on Foata normal form. 64/2260 useless extension candidates. Maximal degree in co-relation 7703. Up to 746 conditions per place. [2022-11-21 17:17:50,211 INFO L137 encePairwiseOnDemand]: 92/112 looper letters, 49 selfloop transitions, 28 changer transitions 126/269 dead transitions. [2022-11-21 17:17:50,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 269 transitions, 1818 flow [2022-11-21 17:17:50,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 17:17:50,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-21 17:17:50,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1832 transitions. [2022-11-21 17:17:50,218 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7789115646258503 [2022-11-21 17:17:50,218 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1832 transitions. [2022-11-21 17:17:50,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1832 transitions. [2022-11-21 17:17:50,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:17:50,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1832 transitions. [2022-11-21 17:17:50,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 87.23809523809524) internal successors, (1832), 21 states have internal predecessors, (1832), 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) [2022-11-21 17:17:50,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 112.0) internal successors, (2464), 22 states have internal predecessors, (2464), 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) [2022-11-21 17:17:50,233 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 112.0) internal successors, (2464), 22 states have internal predecessors, (2464), 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) [2022-11-21 17:17:50,234 INFO L175 Difference]: Start difference. First operand has 136 places, 103 transitions, 332 flow. Second operand 21 states and 1832 transitions. [2022-11-21 17:17:50,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 269 transitions, 1818 flow [2022-11-21 17:17:50,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 269 transitions, 1790 flow, removed 14 selfloop flow, removed 3 redundant places. [2022-11-21 17:17:50,260 INFO L231 Difference]: Finished difference. Result has 148 places, 121 transitions, 646 flow [2022-11-21 17:17:50,260 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=646, PETRI_PLACES=148, PETRI_TRANSITIONS=121} [2022-11-21 17:17:50,262 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 31 predicate places. [2022-11-21 17:17:50,262 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 121 transitions, 646 flow [2022-11-21 17:17:50,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 81.53846153846153) internal successors, (1060), 13 states have internal predecessors, (1060), 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) [2022-11-21 17:17:50,263 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:17:50,264 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:17:50,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:17:50,264 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 17:17:50,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:50,266 INFO L85 PathProgramCache]: Analyzing trace with hash -384368198, now seen corresponding path program 1 times [2022-11-21 17:17:50,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:50,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292189302] [2022-11-21 17:17:50,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:50,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:50,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:17:50,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:17:50,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292189302] [2022-11-21 17:17:50,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292189302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:17:50,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:17:50,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:17:50,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324703748] [2022-11-21 17:17:50,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:17:50,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:17:50,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:50,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:17:50,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:17:50,695 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 112 [2022-11-21 17:17:50,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 121 transitions, 646 flow. Second operand has 6 states, 6 states have (on average 93.16666666666667) internal successors, (559), 6 states have internal predecessors, (559), 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) [2022-11-21 17:17:50,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:17:50,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 112 [2022-11-21 17:17:50,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:17:51,208 INFO L130 PetriNetUnfolder]: 577/1358 cut-off events. [2022-11-21 17:17:51,209 INFO L131 PetriNetUnfolder]: For 10625/18565 co-relation queries the response was YES. [2022-11-21 17:17:51,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6725 conditions, 1358 events. 577/1358 cut-off events. For 10625/18565 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8247 event pairs, 83 based on Foata normal form. 90/1358 useless extension candidates. Maximal degree in co-relation 6636. Up to 697 conditions per place. [2022-11-21 17:17:51,230 INFO L137 encePairwiseOnDemand]: 105/112 looper letters, 39 selfloop transitions, 6 changer transitions 25/158 dead transitions. [2022-11-21 17:17:51,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 158 transitions, 1180 flow [2022-11-21 17:17:51,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:17:51,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 17:17:51,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 866 transitions. [2022-11-21 17:17:51,235 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8591269841269841 [2022-11-21 17:17:51,235 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 866 transitions. [2022-11-21 17:17:51,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 866 transitions. [2022-11-21 17:17:51,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:17:51,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 866 transitions. [2022-11-21 17:17:51,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.22222222222223) internal successors, (866), 9 states have internal predecessors, (866), 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) [2022-11-21 17:17:51,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 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) [2022-11-21 17:17:51,247 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 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) [2022-11-21 17:17:51,247 INFO L175 Difference]: Start difference. First operand has 148 places, 121 transitions, 646 flow. Second operand 9 states and 866 transitions. [2022-11-21 17:17:51,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 158 transitions, 1180 flow [2022-11-21 17:17:51,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 158 transitions, 1138 flow, removed 17 selfloop flow, removed 7 redundant places. [2022-11-21 17:17:51,275 INFO L231 Difference]: Finished difference. Result has 144 places, 126 transitions, 732 flow [2022-11-21 17:17:51,275 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=732, PETRI_PLACES=144, PETRI_TRANSITIONS=126} [2022-11-21 17:17:51,277 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 27 predicate places. [2022-11-21 17:17:51,282 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 126 transitions, 732 flow [2022-11-21 17:17:51,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.16666666666667) internal successors, (559), 6 states have internal predecessors, (559), 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) [2022-11-21 17:17:51,283 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:17:51,283 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:17:51,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:17:51,284 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 17:17:51,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:51,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1637071097, now seen corresponding path program 1 times [2022-11-21 17:17:51,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:51,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066099297] [2022-11-21 17:17:51,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:51,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:52,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:17:52,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:17:52,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066099297] [2022-11-21 17:17:52,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066099297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:17:52,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:17:52,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 17:17:52,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144837333] [2022-11-21 17:17:52,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:17:52,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 17:17:52,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:52,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 17:17:52,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:17:52,339 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 112 [2022-11-21 17:17:52,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 126 transitions, 732 flow. Second operand has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 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) [2022-11-21 17:17:52,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:17:52,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 112 [2022-11-21 17:17:52,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:17:53,151 INFO L130 PetriNetUnfolder]: 654/1522 cut-off events. [2022-11-21 17:17:53,152 INFO L131 PetriNetUnfolder]: For 12599/20626 co-relation queries the response was YES. [2022-11-21 17:17:53,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8024 conditions, 1522 events. 654/1522 cut-off events. For 12599/20626 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 9138 event pairs, 77 based on Foata normal form. 51/1496 useless extension candidates. Maximal degree in co-relation 7929. Up to 732 conditions per place. [2022-11-21 17:17:53,176 INFO L137 encePairwiseOnDemand]: 99/112 looper letters, 72 selfloop transitions, 24 changer transitions 65/231 dead transitions. [2022-11-21 17:17:53,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 231 transitions, 2287 flow [2022-11-21 17:17:53,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 17:17:53,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 17:17:53,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1610 transitions. [2022-11-21 17:17:53,182 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7986111111111112 [2022-11-21 17:17:53,182 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1610 transitions. [2022-11-21 17:17:53,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1610 transitions. [2022-11-21 17:17:53,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:17:53,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1610 transitions. [2022-11-21 17:17:53,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 89.44444444444444) internal successors, (1610), 18 states have internal predecessors, (1610), 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) [2022-11-21 17:17:53,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 112.0) internal successors, (2128), 19 states have internal predecessors, (2128), 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) [2022-11-21 17:17:53,192 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 112.0) internal successors, (2128), 19 states have internal predecessors, (2128), 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) [2022-11-21 17:17:53,193 INFO L175 Difference]: Start difference. First operand has 144 places, 126 transitions, 732 flow. Second operand 18 states and 1610 transitions. [2022-11-21 17:17:53,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 231 transitions, 2287 flow [2022-11-21 17:17:53,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 231 transitions, 2202 flow, removed 38 selfloop flow, removed 7 redundant places. [2022-11-21 17:17:53,232 INFO L231 Difference]: Finished difference. Result has 163 places, 141 transitions, 1034 flow [2022-11-21 17:17:53,232 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1034, PETRI_PLACES=163, PETRI_TRANSITIONS=141} [2022-11-21 17:17:53,235 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 46 predicate places. [2022-11-21 17:17:53,235 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 141 transitions, 1034 flow [2022-11-21 17:17:53,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 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) [2022-11-21 17:17:53,236 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:17:53,236 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:17:53,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:17:53,237 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 17:17:53,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:53,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1358015570, now seen corresponding path program 1 times [2022-11-21 17:17:53,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:53,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015758919] [2022-11-21 17:17:53,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:53,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:54,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:17:54,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:17:54,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015758919] [2022-11-21 17:17:54,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015758919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:17:54,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:17:54,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 17:17:54,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808019930] [2022-11-21 17:17:54,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:17:54,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 17:17:54,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:54,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 17:17:54,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:17:54,747 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 112 [2022-11-21 17:17:54,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 141 transitions, 1034 flow. Second operand has 11 states, 11 states have (on average 83.9090909090909) internal successors, (923), 11 states have internal predecessors, (923), 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) [2022-11-21 17:17:54,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:17:54,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 112 [2022-11-21 17:17:54,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:17:55,795 INFO L130 PetriNetUnfolder]: 772/1766 cut-off events. [2022-11-21 17:17:55,795 INFO L131 PetriNetUnfolder]: For 28163/42184 co-relation queries the response was YES. [2022-11-21 17:17:55,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11491 conditions, 1766 events. 772/1766 cut-off events. For 28163/42184 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11371 event pairs, 10 based on Foata normal form. 48/1734 useless extension candidates. Maximal degree in co-relation 11381. Up to 579 conditions per place. [2022-11-21 17:17:55,830 INFO L137 encePairwiseOnDemand]: 95/112 looper letters, 65 selfloop transitions, 57 changer transitions 71/261 dead transitions. [2022-11-21 17:17:55,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 261 transitions, 3129 flow [2022-11-21 17:17:55,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 17:17:55,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 17:17:55,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1600 transitions. [2022-11-21 17:17:55,835 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7936507936507936 [2022-11-21 17:17:55,836 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1600 transitions. [2022-11-21 17:17:55,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1600 transitions. [2022-11-21 17:17:55,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:17:55,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1600 transitions. [2022-11-21 17:17:55,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 88.88888888888889) internal successors, (1600), 18 states have internal predecessors, (1600), 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) [2022-11-21 17:17:55,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 112.0) internal successors, (2128), 19 states have internal predecessors, (2128), 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) [2022-11-21 17:17:55,846 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 112.0) internal successors, (2128), 19 states have internal predecessors, (2128), 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) [2022-11-21 17:17:55,846 INFO L175 Difference]: Start difference. First operand has 163 places, 141 transitions, 1034 flow. Second operand 18 states and 1600 transitions. [2022-11-21 17:17:55,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 261 transitions, 3129 flow [2022-11-21 17:17:55,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 261 transitions, 2918 flow, removed 96 selfloop flow, removed 11 redundant places. [2022-11-21 17:17:55,930 INFO L231 Difference]: Finished difference. Result has 170 places, 161 transitions, 1547 flow [2022-11-21 17:17:55,931 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1547, PETRI_PLACES=170, PETRI_TRANSITIONS=161} [2022-11-21 17:17:55,932 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 53 predicate places. [2022-11-21 17:17:55,932 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 161 transitions, 1547 flow [2022-11-21 17:17:55,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 83.9090909090909) internal successors, (923), 11 states have internal predecessors, (923), 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) [2022-11-21 17:17:55,933 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:17:55,933 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:17:55,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:17:55,933 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 17:17:55,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:55,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1205000246, now seen corresponding path program 2 times [2022-11-21 17:17:55,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:55,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182229934] [2022-11-21 17:17:55,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:55,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:57,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:17:57,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:17:57,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182229934] [2022-11-21 17:17:57,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182229934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:17:57,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:17:57,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-21 17:17:57,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483819658] [2022-11-21 17:17:57,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:17:57,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 17:17:57,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:57,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 17:17:57,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-21 17:17:57,103 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 112 [2022-11-21 17:17:57,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 161 transitions, 1547 flow. Second operand has 13 states, 13 states have (on average 88.38461538461539) internal successors, (1149), 13 states have internal predecessors, (1149), 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) [2022-11-21 17:17:57,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:17:57,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 112 [2022-11-21 17:17:57,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:17:57,897 INFO L130 PetriNetUnfolder]: 505/1277 cut-off events. [2022-11-21 17:17:57,898 INFO L131 PetriNetUnfolder]: For 23201/27270 co-relation queries the response was YES. [2022-11-21 17:17:57,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8442 conditions, 1277 events. 505/1277 cut-off events. For 23201/27270 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 7820 event pairs, 79 based on Foata normal form. 105/1285 useless extension candidates. Maximal degree in co-relation 8323. Up to 487 conditions per place. [2022-11-21 17:17:57,939 INFO L137 encePairwiseOnDemand]: 101/112 looper letters, 38 selfloop transitions, 17 changer transitions 16/183 dead transitions. [2022-11-21 17:17:57,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 183 transitions, 1981 flow [2022-11-21 17:17:57,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:17:57,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 17:17:57,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1259 transitions. [2022-11-21 17:17:57,943 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8029336734693877 [2022-11-21 17:17:57,943 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1259 transitions. [2022-11-21 17:17:57,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1259 transitions. [2022-11-21 17:17:57,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:17:57,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1259 transitions. [2022-11-21 17:17:57,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 89.92857142857143) internal successors, (1259), 14 states have internal predecessors, (1259), 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) [2022-11-21 17:17:57,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 112.0) internal successors, (1680), 15 states have internal predecessors, (1680), 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) [2022-11-21 17:17:57,953 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 112.0) internal successors, (1680), 15 states have internal predecessors, (1680), 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) [2022-11-21 17:17:57,953 INFO L175 Difference]: Start difference. First operand has 170 places, 161 transitions, 1547 flow. Second operand 14 states and 1259 transitions. [2022-11-21 17:17:57,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 183 transitions, 1981 flow [2022-11-21 17:17:58,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 183 transitions, 1916 flow, removed 26 selfloop flow, removed 7 redundant places. [2022-11-21 17:17:58,013 INFO L231 Difference]: Finished difference. Result has 174 places, 161 transitions, 1547 flow [2022-11-21 17:17:58,014 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=1490, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1547, PETRI_PLACES=174, PETRI_TRANSITIONS=161} [2022-11-21 17:17:58,014 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 57 predicate places. [2022-11-21 17:17:58,015 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 161 transitions, 1547 flow [2022-11-21 17:17:58,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 88.38461538461539) internal successors, (1149), 13 states have internal predecessors, (1149), 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) [2022-11-21 17:17:58,015 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:17:58,016 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:17:58,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:17:58,016 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 17:17:58,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:58,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1506678191, now seen corresponding path program 1 times [2022-11-21 17:17:58,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:58,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530370278] [2022-11-21 17:17:58,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:58,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:58,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:17:58,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:17:58,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530370278] [2022-11-21 17:17:58,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530370278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:17:58,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:17:58,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:17:58,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315846793] [2022-11-21 17:17:58,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:17:58,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:17:58,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:17:58,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:17:58,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:17:58,350 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 112 [2022-11-21 17:17:58,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 161 transitions, 1547 flow. Second operand has 6 states, 6 states have (on average 93.33333333333333) internal successors, (560), 6 states have internal predecessors, (560), 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) [2022-11-21 17:17:58,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:17:58,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 112 [2022-11-21 17:17:58,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:17:59,115 INFO L130 PetriNetUnfolder]: 663/1856 cut-off events. [2022-11-21 17:17:59,115 INFO L131 PetriNetUnfolder]: For 34032/48216 co-relation queries the response was YES. [2022-11-21 17:17:59,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12224 conditions, 1856 events. 663/1856 cut-off events. For 34032/48216 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 13675 event pairs, 111 based on Foata normal form. 62/1799 useless extension candidates. Maximal degree in co-relation 12103. Up to 585 conditions per place. [2022-11-21 17:17:59,149 INFO L137 encePairwiseOnDemand]: 106/112 looper letters, 60 selfloop transitions, 11 changer transitions 52/223 dead transitions. [2022-11-21 17:17:59,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 223 transitions, 3023 flow [2022-11-21 17:17:59,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:17:59,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 17:17:59,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 867 transitions. [2022-11-21 17:17:59,155 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8601190476190477 [2022-11-21 17:17:59,155 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 867 transitions. [2022-11-21 17:17:59,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 867 transitions. [2022-11-21 17:17:59,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:17:59,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 867 transitions. [2022-11-21 17:17:59,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.33333333333333) internal successors, (867), 9 states have internal predecessors, (867), 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) [2022-11-21 17:17:59,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 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) [2022-11-21 17:17:59,164 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 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) [2022-11-21 17:17:59,165 INFO L175 Difference]: Start difference. First operand has 174 places, 161 transitions, 1547 flow. Second operand 9 states and 867 transitions. [2022-11-21 17:17:59,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 223 transitions, 3023 flow [2022-11-21 17:17:59,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 223 transitions, 2916 flow, removed 41 selfloop flow, removed 12 redundant places. [2022-11-21 17:17:59,260 INFO L231 Difference]: Finished difference. Result has 171 places, 152 transitions, 1389 flow [2022-11-21 17:17:59,260 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=1468, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1389, PETRI_PLACES=171, PETRI_TRANSITIONS=152} [2022-11-21 17:17:59,262 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 54 predicate places. [2022-11-21 17:17:59,263 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 152 transitions, 1389 flow [2022-11-21 17:17:59,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.33333333333333) internal successors, (560), 6 states have internal predecessors, (560), 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) [2022-11-21 17:17:59,263 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:17:59,263 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:17:59,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:17:59,264 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 17:17:59,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:59,265 INFO L85 PathProgramCache]: Analyzing trace with hash -2092809803, now seen corresponding path program 1 times [2022-11-21 17:17:59,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:17:59,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712258693] [2022-11-21 17:17:59,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:17:59,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:17:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:00,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:18:00,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:18:00,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712258693] [2022-11-21 17:18:00,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712258693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:18:00,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:18:00,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 17:18:00,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134587803] [2022-11-21 17:18:00,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:18:00,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:18:00,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:18:00,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:18:00,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:18:00,301 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 112 [2022-11-21 17:18:00,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 152 transitions, 1389 flow. Second operand has 10 states, 10 states have (on average 82.3) internal successors, (823), 10 states have internal predecessors, (823), 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) [2022-11-21 17:18:00,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:18:00,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 112 [2022-11-21 17:18:00,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:18:01,778 INFO L130 PetriNetUnfolder]: 691/1879 cut-off events. [2022-11-21 17:18:01,778 INFO L131 PetriNetUnfolder]: For 35055/44379 co-relation queries the response was YES. [2022-11-21 17:18:01,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12839 conditions, 1879 events. 691/1879 cut-off events. For 35055/44379 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 13470 event pairs, 42 based on Foata normal form. 100/1884 useless extension candidates. Maximal degree in co-relation 12714. Up to 628 conditions per place. [2022-11-21 17:18:01,809 INFO L137 encePairwiseOnDemand]: 95/112 looper letters, 68 selfloop transitions, 71 changer transitions 51/256 dead transitions. [2022-11-21 17:18:01,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 256 transitions, 3550 flow [2022-11-21 17:18:01,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 17:18:01,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-21 17:18:01,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1381 transitions. [2022-11-21 17:18:01,812 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7706473214285714 [2022-11-21 17:18:01,813 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1381 transitions. [2022-11-21 17:18:01,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1381 transitions. [2022-11-21 17:18:01,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:18:01,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1381 transitions. [2022-11-21 17:18:01,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 86.3125) internal successors, (1381), 16 states have internal predecessors, (1381), 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) [2022-11-21 17:18:01,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 112.0) internal successors, (1904), 17 states have internal predecessors, (1904), 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) [2022-11-21 17:18:01,820 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 112.0) internal successors, (1904), 17 states have internal predecessors, (1904), 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) [2022-11-21 17:18:01,820 INFO L175 Difference]: Start difference. First operand has 171 places, 152 transitions, 1389 flow. Second operand 16 states and 1381 transitions. [2022-11-21 17:18:01,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 256 transitions, 3550 flow [2022-11-21 17:18:01,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 256 transitions, 3467 flow, removed 20 selfloop flow, removed 8 redundant places. [2022-11-21 17:18:01,908 INFO L231 Difference]: Finished difference. Result has 183 places, 190 transitions, 2301 flow [2022-11-21 17:18:01,909 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=1353, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2301, PETRI_PLACES=183, PETRI_TRANSITIONS=190} [2022-11-21 17:18:01,909 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 66 predicate places. [2022-11-21 17:18:01,909 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 190 transitions, 2301 flow [2022-11-21 17:18:01,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 82.3) internal successors, (823), 10 states have internal predecessors, (823), 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) [2022-11-21 17:18:01,910 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:18:01,910 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:18:01,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:18:01,910 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 17:18:01,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:18:01,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1105816413, now seen corresponding path program 2 times [2022-11-21 17:18:01,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:18:01,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097863891] [2022-11-21 17:18:01,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:18:01,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:18:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:03,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:18:03,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:18:03,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097863891] [2022-11-21 17:18:03,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097863891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:18:03,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:18:03,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 17:18:03,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787000571] [2022-11-21 17:18:03,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:18:03,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 17:18:03,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:18:03,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 17:18:03,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:18:03,230 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2022-11-21 17:18:03,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 190 transitions, 2301 flow. Second operand has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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) [2022-11-21 17:18:03,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:18:03,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2022-11-21 17:18:03,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:18:04,355 INFO L130 PetriNetUnfolder]: 686/1885 cut-off events. [2022-11-21 17:18:04,355 INFO L131 PetriNetUnfolder]: For 41783/63487 co-relation queries the response was YES. [2022-11-21 17:18:04,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14126 conditions, 1885 events. 686/1885 cut-off events. For 41783/63487 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 13700 event pairs, 51 based on Foata normal form. 225/2014 useless extension candidates. Maximal degree in co-relation 13994. Up to 629 conditions per place. [2022-11-21 17:18:04,384 INFO L137 encePairwiseOnDemand]: 96/112 looper letters, 73 selfloop transitions, 70 changer transitions 61/271 dead transitions. [2022-11-21 17:18:04,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 271 transitions, 4245 flow [2022-11-21 17:18:04,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 17:18:04,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 17:18:04,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1489 transitions. [2022-11-21 17:18:04,396 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7820378151260504 [2022-11-21 17:18:04,397 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1489 transitions. [2022-11-21 17:18:04,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1489 transitions. [2022-11-21 17:18:04,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:18:04,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1489 transitions. [2022-11-21 17:18:04,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 87.58823529411765) internal successors, (1489), 17 states have internal predecessors, (1489), 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) [2022-11-21 17:18:04,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 112.0) internal successors, (2016), 18 states have internal predecessors, (2016), 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) [2022-11-21 17:18:04,408 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 112.0) internal successors, (2016), 18 states have internal predecessors, (2016), 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) [2022-11-21 17:18:04,409 INFO L175 Difference]: Start difference. First operand has 183 places, 190 transitions, 2301 flow. Second operand 17 states and 1489 transitions. [2022-11-21 17:18:04,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 271 transitions, 4245 flow [2022-11-21 17:18:04,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 271 transitions, 4064 flow, removed 89 selfloop flow, removed 8 redundant places. [2022-11-21 17:18:04,595 INFO L231 Difference]: Finished difference. Result has 197 places, 198 transitions, 2633 flow [2022-11-21 17:18:04,596 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2156, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2633, PETRI_PLACES=197, PETRI_TRANSITIONS=198} [2022-11-21 17:18:04,597 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 80 predicate places. [2022-11-21 17:18:04,597 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 198 transitions, 2633 flow [2022-11-21 17:18:04,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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) [2022-11-21 17:18:04,598 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:18:04,598 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:18:04,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:18:04,600 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 17:18:04,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:18:04,601 INFO L85 PathProgramCache]: Analyzing trace with hash -427314539, now seen corresponding path program 3 times [2022-11-21 17:18:04,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:18:04,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969386179] [2022-11-21 17:18:04,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:18:04,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:18:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:05,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:18:05,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:18:05,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969386179] [2022-11-21 17:18:05,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969386179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:18:05,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:18:05,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 17:18:05,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529937949] [2022-11-21 17:18:05,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:18:05,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 17:18:05,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:18:05,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 17:18:05,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:18:05,375 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 112 [2022-11-21 17:18:05,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 198 transitions, 2633 flow. Second operand has 12 states, 12 states have (on average 88.5) internal successors, (1062), 12 states have internal predecessors, (1062), 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) [2022-11-21 17:18:05,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:18:05,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 112 [2022-11-21 17:18:05,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:18:06,077 INFO L130 PetriNetUnfolder]: 644/1783 cut-off events. [2022-11-21 17:18:06,077 INFO L131 PetriNetUnfolder]: For 57941/72601 co-relation queries the response was YES. [2022-11-21 17:18:06,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14815 conditions, 1783 events. 644/1783 cut-off events. For 57941/72601 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13025 event pairs, 116 based on Foata normal form. 273/1942 useless extension candidates. Maximal degree in co-relation 14676. Up to 649 conditions per place. [2022-11-21 17:18:06,110 INFO L137 encePairwiseOnDemand]: 99/112 looper letters, 51 selfloop transitions, 33 changer transitions 16/223 dead transitions. [2022-11-21 17:18:06,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 223 transitions, 3479 flow [2022-11-21 17:18:06,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 17:18:06,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 17:18:06,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 997 transitions. [2022-11-21 17:18:06,113 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8092532467532467 [2022-11-21 17:18:06,113 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 997 transitions. [2022-11-21 17:18:06,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 997 transitions. [2022-11-21 17:18:06,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:18:06,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 997 transitions. [2022-11-21 17:18:06,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 90.63636363636364) internal successors, (997), 11 states have internal predecessors, (997), 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) [2022-11-21 17:18:06,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 112.0) internal successors, (1344), 12 states have internal predecessors, (1344), 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) [2022-11-21 17:18:06,118 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 112.0) internal successors, (1344), 12 states have internal predecessors, (1344), 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) [2022-11-21 17:18:06,119 INFO L175 Difference]: Start difference. First operand has 197 places, 198 transitions, 2633 flow. Second operand 11 states and 997 transitions. [2022-11-21 17:18:06,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 223 transitions, 3479 flow [2022-11-21 17:18:06,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 223 transitions, 3259 flow, removed 93 selfloop flow, removed 13 redundant places. [2022-11-21 17:18:06,274 INFO L231 Difference]: Finished difference. Result has 189 places, 205 transitions, 2753 flow [2022-11-21 17:18:06,274 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2475, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2753, PETRI_PLACES=189, PETRI_TRANSITIONS=205} [2022-11-21 17:18:06,275 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 72 predicate places. [2022-11-21 17:18:06,275 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 205 transitions, 2753 flow [2022-11-21 17:18:06,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 88.5) internal successors, (1062), 12 states have internal predecessors, (1062), 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) [2022-11-21 17:18:06,276 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:18:06,276 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:18:06,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:18:06,276 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 17:18:06,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:18:06,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1859159077, now seen corresponding path program 4 times [2022-11-21 17:18:06,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:18:06,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27289731] [2022-11-21 17:18:06,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:18:06,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:18:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:07,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:18:07,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:18:07,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27289731] [2022-11-21 17:18:07,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27289731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:18:07,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:18:07,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 17:18:07,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060452042] [2022-11-21 17:18:07,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:18:07,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 17:18:07,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:18:07,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 17:18:07,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:18:07,428 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2022-11-21 17:18:07,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 205 transitions, 2753 flow. Second operand has 12 states, 12 states have (on average 82.83333333333333) internal successors, (994), 12 states have internal predecessors, (994), 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) [2022-11-21 17:18:07,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:18:07,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2022-11-21 17:18:07,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:18:08,390 INFO L130 PetriNetUnfolder]: 629/1756 cut-off events. [2022-11-21 17:18:08,390 INFO L131 PetriNetUnfolder]: For 44667/113737 co-relation queries the response was YES. [2022-11-21 17:18:08,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14259 conditions, 1756 events. 629/1756 cut-off events. For 44667/113737 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 12551 event pairs, 47 based on Foata normal form. 76/1735 useless extension candidates. Maximal degree in co-relation 14121. Up to 588 conditions per place. [2022-11-21 17:18:08,419 INFO L137 encePairwiseOnDemand]: 97/112 looper letters, 98 selfloop transitions, 69 changer transitions 62/296 dead transitions. [2022-11-21 17:18:08,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 296 transitions, 5189 flow [2022-11-21 17:18:08,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 17:18:08,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 17:18:08,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1480 transitions. [2022-11-21 17:18:08,422 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7773109243697479 [2022-11-21 17:18:08,422 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1480 transitions. [2022-11-21 17:18:08,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1480 transitions. [2022-11-21 17:18:08,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:18:08,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1480 transitions. [2022-11-21 17:18:08,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 87.05882352941177) internal successors, (1480), 17 states have internal predecessors, (1480), 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) [2022-11-21 17:18:08,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 112.0) internal successors, (2016), 18 states have internal predecessors, (2016), 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) [2022-11-21 17:18:08,430 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 112.0) internal successors, (2016), 18 states have internal predecessors, (2016), 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) [2022-11-21 17:18:08,430 INFO L175 Difference]: Start difference. First operand has 189 places, 205 transitions, 2753 flow. Second operand 17 states and 1480 transitions. [2022-11-21 17:18:08,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 296 transitions, 5189 flow [2022-11-21 17:18:08,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 296 transitions, 5035 flow, removed 55 selfloop flow, removed 9 redundant places. [2022-11-21 17:18:08,600 INFO L231 Difference]: Finished difference. Result has 205 places, 221 transitions, 3336 flow [2022-11-21 17:18:08,600 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2623, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3336, PETRI_PLACES=205, PETRI_TRANSITIONS=221} [2022-11-21 17:18:08,601 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 88 predicate places. [2022-11-21 17:18:08,601 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 221 transitions, 3336 flow [2022-11-21 17:18:08,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 82.83333333333333) internal successors, (994), 12 states have internal predecessors, (994), 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) [2022-11-21 17:18:08,601 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:18:08,602 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:18:08,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 17:18:08,602 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 17:18:08,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:18:08,603 INFO L85 PathProgramCache]: Analyzing trace with hash -292500829, now seen corresponding path program 1 times [2022-11-21 17:18:08,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:18:08,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675885080] [2022-11-21 17:18:08,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:18:08,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:18:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:18:09,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:18:09,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675885080] [2022-11-21 17:18:09,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675885080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:18:09,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:18:09,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:18:09,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164968030] [2022-11-21 17:18:09,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:18:09,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:18:09,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:18:09,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:18:09,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:18:09,340 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 112 [2022-11-21 17:18:09,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 221 transitions, 3336 flow. Second operand has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 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) [2022-11-21 17:18:09,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:18:09,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 112 [2022-11-21 17:18:09,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:18:10,096 INFO L130 PetriNetUnfolder]: 515/1515 cut-off events. [2022-11-21 17:18:10,096 INFO L131 PetriNetUnfolder]: For 46492/115711 co-relation queries the response was YES. [2022-11-21 17:18:10,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13338 conditions, 1515 events. 515/1515 cut-off events. For 46492/115711 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 10783 event pairs, 59 based on Foata normal form. 37/1465 useless extension candidates. Maximal degree in co-relation 13191. Up to 545 conditions per place. [2022-11-21 17:18:10,122 INFO L137 encePairwiseOnDemand]: 97/112 looper letters, 105 selfloop transitions, 50 changer transitions 86/307 dead transitions. [2022-11-21 17:18:10,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 307 transitions, 5868 flow [2022-11-21 17:18:10,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 17:18:10,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 17:18:10,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 884 transitions. [2022-11-21 17:18:10,125 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7892857142857143 [2022-11-21 17:18:10,125 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 884 transitions. [2022-11-21 17:18:10,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 884 transitions. [2022-11-21 17:18:10,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:18:10,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 884 transitions. [2022-11-21 17:18:10,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 88.4) internal successors, (884), 10 states have internal predecessors, (884), 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) [2022-11-21 17:18:10,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 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) [2022-11-21 17:18:10,129 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 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) [2022-11-21 17:18:10,130 INFO L175 Difference]: Start difference. First operand has 205 places, 221 transitions, 3336 flow. Second operand 10 states and 884 transitions. [2022-11-21 17:18:10,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 307 transitions, 5868 flow [2022-11-21 17:18:10,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 307 transitions, 5681 flow, removed 83 selfloop flow, removed 13 redundant places. [2022-11-21 17:18:10,324 INFO L231 Difference]: Finished difference. Result has 200 places, 204 transitions, 3055 flow [2022-11-21 17:18:10,325 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=3267, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3055, PETRI_PLACES=200, PETRI_TRANSITIONS=204} [2022-11-21 17:18:10,326 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 83 predicate places. [2022-11-21 17:18:10,327 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 204 transitions, 3055 flow [2022-11-21 17:18:10,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 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) [2022-11-21 17:18:10,327 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:18:10,328 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:18:10,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 17:18:10,328 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 17:18:10,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:18:10,329 INFO L85 PathProgramCache]: Analyzing trace with hash 121877810, now seen corresponding path program 1 times [2022-11-21 17:18:10,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:18:10,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914676654] [2022-11-21 17:18:10,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:18:10,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:18:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:11,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:18:11,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:18:11,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914676654] [2022-11-21 17:18:11,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914676654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:18:11,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:18:11,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 17:18:11,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385579741] [2022-11-21 17:18:11,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:18:11,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 17:18:11,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:18:11,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 17:18:11,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:18:11,635 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 112 [2022-11-21 17:18:11,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 204 transitions, 3055 flow. Second operand has 12 states, 12 states have (on average 82.0) internal successors, (984), 12 states have internal predecessors, (984), 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) [2022-11-21 17:18:11,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:18:11,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 112 [2022-11-21 17:18:11,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:18:12,675 INFO L130 PetriNetUnfolder]: 440/1536 cut-off events. [2022-11-21 17:18:12,676 INFO L131 PetriNetUnfolder]: For 42411/80857 co-relation queries the response was YES. [2022-11-21 17:18:12,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12331 conditions, 1536 events. 440/1536 cut-off events. For 42411/80857 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11765 event pairs, 67 based on Foata normal form. 186/1640 useless extension candidates. Maximal degree in co-relation 12184. Up to 505 conditions per place. [2022-11-21 17:18:12,700 INFO L137 encePairwiseOnDemand]: 95/112 looper letters, 88 selfloop transitions, 67 changer transitions 46/267 dead transitions. [2022-11-21 17:18:12,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 267 transitions, 4854 flow [2022-11-21 17:18:12,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 17:18:12,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 17:18:12,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1527 transitions. [2022-11-21 17:18:12,706 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7574404761904762 [2022-11-21 17:18:12,706 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1527 transitions. [2022-11-21 17:18:12,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1527 transitions. [2022-11-21 17:18:12,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:18:12,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1527 transitions. [2022-11-21 17:18:12,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 84.83333333333333) internal successors, (1527), 18 states have internal predecessors, (1527), 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) [2022-11-21 17:18:12,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 112.0) internal successors, (2128), 19 states have internal predecessors, (2128), 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) [2022-11-21 17:18:12,718 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 112.0) internal successors, (2128), 19 states have internal predecessors, (2128), 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) [2022-11-21 17:18:12,718 INFO L175 Difference]: Start difference. First operand has 200 places, 204 transitions, 3055 flow. Second operand 18 states and 1527 transitions. [2022-11-21 17:18:12,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 267 transitions, 4854 flow [2022-11-21 17:18:12,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 267 transitions, 4658 flow, removed 50 selfloop flow, removed 8 redundant places. [2022-11-21 17:18:12,853 INFO L231 Difference]: Finished difference. Result has 214 places, 208 transitions, 3322 flow [2022-11-21 17:18:12,854 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2927, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3322, PETRI_PLACES=214, PETRI_TRANSITIONS=208} [2022-11-21 17:18:12,854 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 97 predicate places. [2022-11-21 17:18:12,854 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 208 transitions, 3322 flow [2022-11-21 17:18:12,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 82.0) internal successors, (984), 12 states have internal predecessors, (984), 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) [2022-11-21 17:18:12,855 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:18:12,855 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:18:12,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 17:18:12,855 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 17:18:12,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:18:12,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1826659032, now seen corresponding path program 2 times [2022-11-21 17:18:12,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:18:12,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978336993] [2022-11-21 17:18:12,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:18:12,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:18:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:14,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:18:14,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:18:14,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978336993] [2022-11-21 17:18:14,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978336993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:18:14,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:18:14,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-21 17:18:14,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725171156] [2022-11-21 17:18:14,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:18:14,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 17:18:14,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:18:14,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 17:18:14,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-21 17:18:14,325 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 112 [2022-11-21 17:18:14,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 208 transitions, 3322 flow. Second operand has 13 states, 13 states have (on average 80.0) internal successors, (1040), 13 states have internal predecessors, (1040), 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) [2022-11-21 17:18:14,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:18:14,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 112 [2022-11-21 17:18:14,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:18:15,366 INFO L130 PetriNetUnfolder]: 432/1543 cut-off events. [2022-11-21 17:18:15,366 INFO L131 PetriNetUnfolder]: For 46680/67557 co-relation queries the response was YES. [2022-11-21 17:18:15,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12871 conditions, 1543 events. 432/1543 cut-off events. For 46680/67557 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12034 event pairs, 69 based on Foata normal form. 119/1588 useless extension candidates. Maximal degree in co-relation 12714. Up to 473 conditions per place. [2022-11-21 17:18:15,469 INFO L137 encePairwiseOnDemand]: 94/112 looper letters, 94 selfloop transitions, 69 changer transitions 48/275 dead transitions. [2022-11-21 17:18:15,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 275 transitions, 5315 flow [2022-11-21 17:18:15,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 17:18:15,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-21 17:18:15,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1570 transitions. [2022-11-21 17:18:15,473 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7377819548872181 [2022-11-21 17:18:15,473 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1570 transitions. [2022-11-21 17:18:15,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1570 transitions. [2022-11-21 17:18:15,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:18:15,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1570 transitions. [2022-11-21 17:18:15,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 82.63157894736842) internal successors, (1570), 19 states have internal predecessors, (1570), 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) [2022-11-21 17:18:15,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 112.0) internal successors, (2240), 20 states have internal predecessors, (2240), 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) [2022-11-21 17:18:15,483 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 112.0) internal successors, (2240), 20 states have internal predecessors, (2240), 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) [2022-11-21 17:18:15,483 INFO L175 Difference]: Start difference. First operand has 214 places, 208 transitions, 3322 flow. Second operand 19 states and 1570 transitions. [2022-11-21 17:18:15,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 275 transitions, 5315 flow [2022-11-21 17:18:15,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 275 transitions, 5086 flow, removed 59 selfloop flow, removed 15 redundant places. [2022-11-21 17:18:15,648 INFO L231 Difference]: Finished difference. Result has 220 places, 213 transitions, 3668 flow [2022-11-21 17:18:15,649 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=3197, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3668, PETRI_PLACES=220, PETRI_TRANSITIONS=213} [2022-11-21 17:18:15,650 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 103 predicate places. [2022-11-21 17:18:15,651 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 213 transitions, 3668 flow [2022-11-21 17:18:15,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 80.0) internal successors, (1040), 13 states have internal predecessors, (1040), 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) [2022-11-21 17:18:15,651 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:18:15,651 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:18:15,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 17:18:15,652 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 17:18:15,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:18:15,652 INFO L85 PathProgramCache]: Analyzing trace with hash -994370828, now seen corresponding path program 3 times [2022-11-21 17:18:15,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:18:15,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853297152] [2022-11-21 17:18:15,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:18:15,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:18:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:16,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:18:16,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:18:16,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853297152] [2022-11-21 17:18:16,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853297152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:18:16,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:18:16,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 17:18:16,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347509804] [2022-11-21 17:18:16,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:18:16,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 17:18:16,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:18:16,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 17:18:16,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:18:16,395 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 112 [2022-11-21 17:18:16,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 213 transitions, 3668 flow. Second operand has 11 states, 11 states have (on average 89.63636363636364) internal successors, (986), 11 states have internal predecessors, (986), 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) [2022-11-21 17:18:16,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:18:16,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 112 [2022-11-21 17:18:16,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:18:17,131 INFO L130 PetriNetUnfolder]: 329/1344 cut-off events. [2022-11-21 17:18:17,131 INFO L131 PetriNetUnfolder]: For 43560/73400 co-relation queries the response was YES. [2022-11-21 17:18:17,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10854 conditions, 1344 events. 329/1344 cut-off events. For 43560/73400 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10809 event pairs, 60 based on Foata normal form. 72/1329 useless extension candidates. Maximal degree in co-relation 10699. Up to 414 conditions per place. [2022-11-21 17:18:17,145 INFO L137 encePairwiseOnDemand]: 103/112 looper letters, 71 selfloop transitions, 19 changer transitions 35/235 dead transitions. [2022-11-21 17:18:17,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 235 transitions, 4473 flow [2022-11-21 17:18:17,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 17:18:17,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-21 17:18:17,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1097 transitions. [2022-11-21 17:18:17,149 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8162202380952381 [2022-11-21 17:18:17,149 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1097 transitions. [2022-11-21 17:18:17,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1097 transitions. [2022-11-21 17:18:17,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:18:17,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1097 transitions. [2022-11-21 17:18:17,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 91.41666666666667) internal successors, (1097), 12 states have internal predecessors, (1097), 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) [2022-11-21 17:18:17,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 112.0) internal successors, (1456), 13 states have internal predecessors, (1456), 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) [2022-11-21 17:18:17,154 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 112.0) internal successors, (1456), 13 states have internal predecessors, (1456), 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) [2022-11-21 17:18:17,154 INFO L175 Difference]: Start difference. First operand has 220 places, 213 transitions, 3668 flow. Second operand 12 states and 1097 transitions. [2022-11-21 17:18:17,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 235 transitions, 4473 flow [2022-11-21 17:18:17,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 235 transitions, 4280 flow, removed 76 selfloop flow, removed 17 redundant places. [2022-11-21 17:18:17,332 INFO L231 Difference]: Finished difference. Result has 212 places, 195 transitions, 3263 flow [2022-11-21 17:18:17,333 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=3557, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3263, PETRI_PLACES=212, PETRI_TRANSITIONS=195} [2022-11-21 17:18:17,333 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 95 predicate places. [2022-11-21 17:18:17,334 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 195 transitions, 3263 flow [2022-11-21 17:18:17,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 89.63636363636364) internal successors, (986), 11 states have internal predecessors, (986), 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) [2022-11-21 17:18:17,334 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:18:17,334 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:18:17,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 17:18:17,335 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 17:18:17,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:18:17,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1389708016, now seen corresponding path program 1 times [2022-11-21 17:18:17,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:18:17,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478445316] [2022-11-21 17:18:17,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:18:17,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:18:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:17,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:18:17,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:18:17,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478445316] [2022-11-21 17:18:17,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478445316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:18:17,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:18:17,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:18:17,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3587240] [2022-11-21 17:18:17,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:18:17,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:18:17,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:18:17,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:18:17,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:18:17,520 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 112 [2022-11-21 17:18:17,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 195 transitions, 3263 flow. Second operand has 6 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 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) [2022-11-21 17:18:17,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:18:17,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 112 [2022-11-21 17:18:17,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:18:18,769 INFO L130 PetriNetUnfolder]: 2220/4850 cut-off events. [2022-11-21 17:18:18,769 INFO L131 PetriNetUnfolder]: For 170757/176719 co-relation queries the response was YES. [2022-11-21 17:18:18,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27804 conditions, 4850 events. 2220/4850 cut-off events. For 170757/176719 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 40059 event pairs, 141 based on Foata normal form. 539/5150 useless extension candidates. Maximal degree in co-relation 27659. Up to 1423 conditions per place. [2022-11-21 17:18:18,814 INFO L137 encePairwiseOnDemand]: 102/112 looper letters, 88 selfloop transitions, 7 changer transitions 136/333 dead transitions. [2022-11-21 17:18:18,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 333 transitions, 7399 flow [2022-11-21 17:18:18,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 17:18:18,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 17:18:18,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 963 transitions. [2022-11-21 17:18:18,818 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8598214285714286 [2022-11-21 17:18:18,818 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 963 transitions. [2022-11-21 17:18:18,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 963 transitions. [2022-11-21 17:18:18,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:18:18,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 963 transitions. [2022-11-21 17:18:18,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 96.3) internal successors, (963), 10 states have internal predecessors, (963), 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) [2022-11-21 17:18:18,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 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) [2022-11-21 17:18:18,823 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 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) [2022-11-21 17:18:18,824 INFO L175 Difference]: Start difference. First operand has 212 places, 195 transitions, 3263 flow. Second operand 10 states and 963 transitions. [2022-11-21 17:18:18,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 333 transitions, 7399 flow [2022-11-21 17:18:19,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 333 transitions, 6761 flow, removed 90 selfloop flow, removed 21 redundant places. [2022-11-21 17:18:19,105 INFO L231 Difference]: Finished difference. Result has 200 places, 166 transitions, 2331 flow [2022-11-21 17:18:19,106 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2304, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2331, PETRI_PLACES=200, PETRI_TRANSITIONS=166} [2022-11-21 17:18:19,106 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 83 predicate places. [2022-11-21 17:18:19,106 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 166 transitions, 2331 flow [2022-11-21 17:18:19,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 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) [2022-11-21 17:18:19,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:18:19,107 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:18:19,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 17:18:19,107 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 17:18:19,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:18:19,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1424946116, now seen corresponding path program 1 times [2022-11-21 17:18:19,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:18:19,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62801312] [2022-11-21 17:18:19,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:18:19,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:18:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:19,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:18:19,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:18:19,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62801312] [2022-11-21 17:18:19,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62801312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:18:19,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:18:19,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:18:19,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118622089] [2022-11-21 17:18:19,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:18:19,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:18:19,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:18:19,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:18:19,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:18:19,327 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 112 [2022-11-21 17:18:19,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 166 transitions, 2331 flow. Second operand has 7 states, 7 states have (on average 91.14285714285714) internal successors, (638), 7 states have internal predecessors, (638), 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) [2022-11-21 17:18:19,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:18:19,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 112 [2022-11-21 17:18:19,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:18:20,223 INFO L130 PetriNetUnfolder]: 955/2573 cut-off events. [2022-11-21 17:18:20,223 INFO L131 PetriNetUnfolder]: For 53408/54052 co-relation queries the response was YES. [2022-11-21 17:18:20,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14948 conditions, 2573 events. 955/2573 cut-off events. For 53408/54052 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 21221 event pairs, 39 based on Foata normal form. 257/2802 useless extension candidates. Maximal degree in co-relation 14813. Up to 908 conditions per place. [2022-11-21 17:18:20,247 INFO L137 encePairwiseOnDemand]: 102/112 looper letters, 68 selfloop transitions, 18 changer transitions 68/253 dead transitions. [2022-11-21 17:18:20,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 253 transitions, 4730 flow [2022-11-21 17:18:20,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 17:18:20,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 17:18:20,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1054 transitions. [2022-11-21 17:18:20,251 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8555194805194806 [2022-11-21 17:18:20,251 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1054 transitions. [2022-11-21 17:18:20,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1054 transitions. [2022-11-21 17:18:20,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:18:20,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1054 transitions. [2022-11-21 17:18:20,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 95.81818181818181) internal successors, (1054), 11 states have internal predecessors, (1054), 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) [2022-11-21 17:18:20,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 112.0) internal successors, (1344), 12 states have internal predecessors, (1344), 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) [2022-11-21 17:18:20,257 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 112.0) internal successors, (1344), 12 states have internal predecessors, (1344), 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) [2022-11-21 17:18:20,258 INFO L175 Difference]: Start difference. First operand has 200 places, 166 transitions, 2331 flow. Second operand 11 states and 1054 transitions. [2022-11-21 17:18:20,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 253 transitions, 4730 flow [2022-11-21 17:18:20,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 253 transitions, 4540 flow, removed 16 selfloop flow, removed 15 redundant places. [2022-11-21 17:18:20,401 INFO L231 Difference]: Finished difference. Result has 197 places, 162 transitions, 1954 flow [2022-11-21 17:18:20,402 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=1926, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1954, PETRI_PLACES=197, PETRI_TRANSITIONS=162} [2022-11-21 17:18:20,402 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 80 predicate places. [2022-11-21 17:18:20,402 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 162 transitions, 1954 flow [2022-11-21 17:18:20,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 91.14285714285714) internal successors, (638), 7 states have internal predecessors, (638), 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) [2022-11-21 17:18:20,402 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:18:20,402 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:18:20,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 17:18:20,403 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 17:18:20,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:18:20,403 INFO L85 PathProgramCache]: Analyzing trace with hash -867078061, now seen corresponding path program 1 times [2022-11-21 17:18:20,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:18:20,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202635588] [2022-11-21 17:18:20,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:18:20,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:18:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:20,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:18:20,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:18:20,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202635588] [2022-11-21 17:18:20,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202635588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:18:20,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:18:20,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 17:18:20,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291171142] [2022-11-21 17:18:20,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:18:20,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:18:20,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:18:20,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:18:20,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:18:20,641 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 112 [2022-11-21 17:18:20,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 162 transitions, 1954 flow. Second operand has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 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) [2022-11-21 17:18:20,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:18:20,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 112 [2022-11-21 17:18:20,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:18:21,343 INFO L130 PetriNetUnfolder]: 590/1821 cut-off events. [2022-11-21 17:18:21,344 INFO L131 PetriNetUnfolder]: For 40122/40575 co-relation queries the response was YES. [2022-11-21 17:18:21,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11398 conditions, 1821 events. 590/1821 cut-off events. For 40122/40575 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 15365 event pairs, 27 based on Foata normal form. 152/1955 useless extension candidates. Maximal degree in co-relation 11342. Up to 562 conditions per place. [2022-11-21 17:18:21,364 INFO L137 encePairwiseOnDemand]: 102/112 looper letters, 20 selfloop transitions, 12 changer transitions 124/230 dead transitions. [2022-11-21 17:18:21,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 230 transitions, 3686 flow [2022-11-21 17:18:21,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:18:21,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 17:18:21,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1314 transitions. [2022-11-21 17:18:21,367 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8380102040816326 [2022-11-21 17:18:21,368 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1314 transitions. [2022-11-21 17:18:21,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1314 transitions. [2022-11-21 17:18:21,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:18:21,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1314 transitions. [2022-11-21 17:18:21,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 93.85714285714286) internal successors, (1314), 14 states have internal predecessors, (1314), 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) [2022-11-21 17:18:21,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 112.0) internal successors, (1680), 15 states have internal predecessors, (1680), 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) [2022-11-21 17:18:21,374 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 112.0) internal successors, (1680), 15 states have internal predecessors, (1680), 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) [2022-11-21 17:18:21,374 INFO L175 Difference]: Start difference. First operand has 197 places, 162 transitions, 1954 flow. Second operand 14 states and 1314 transitions. [2022-11-21 17:18:21,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 230 transitions, 3686 flow [2022-11-21 17:18:21,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 230 transitions, 3251 flow, removed 207 selfloop flow, removed 12 redundant places. [2022-11-21 17:18:21,502 INFO L231 Difference]: Finished difference. Result has 204 places, 100 transitions, 613 flow [2022-11-21 17:18:21,502 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=1693, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=613, PETRI_PLACES=204, PETRI_TRANSITIONS=100} [2022-11-21 17:18:21,503 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 87 predicate places. [2022-11-21 17:18:21,503 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 100 transitions, 613 flow [2022-11-21 17:18:21,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 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) [2022-11-21 17:18:21,503 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:18:21,504 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:18:21,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 17:18:21,504 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-21 17:18:21,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:18:21,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1340422714, now seen corresponding path program 1 times [2022-11-21 17:18:21,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:18:21,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146497509] [2022-11-21 17:18:21,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:18:21,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:18:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:18:21,536 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:18:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:18:21,650 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:18:21,651 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 17:18:21,652 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-11-21 17:18:21,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-11-21 17:18:21,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-11-21 17:18:21,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-11-21 17:18:21,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2022-11-21 17:18:21,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-11-21 17:18:21,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 17:18:21,655 INFO L444 BasicCegarLoop]: Path program histogram: [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:18:21,662 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-21 17:18:21,662 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 17:18:21,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 05:18:21 BasicIcfg [2022-11-21 17:18:21,769 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 17:18:21,770 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 17:18:21,770 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 17:18:21,770 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 17:18:21,771 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:17:42" (3/4) ... [2022-11-21 17:18:21,773 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-21 17:18:21,875 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801c45ff-a581-43ee-9635-7284a09b85a7/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 17:18:21,875 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 17:18:21,875 INFO L158 Benchmark]: Toolchain (without parser) took 41538.72ms. Allocated memory was 134.2MB in the beginning and 910.2MB in the end (delta: 775.9MB). Free memory was 101.6MB in the beginning and 448.2MB in the end (delta: -346.6MB). Peak memory consumption was 431.8MB. Max. memory is 16.1GB. [2022-11-21 17:18:21,876 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 134.2MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:18:21,876 INFO L158 Benchmark]: CACSL2BoogieTranslator took 596.57ms. Allocated memory is still 134.2MB. Free memory was 101.6MB in the beginning and 78.7MB in the end (delta: 22.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-21 17:18:21,876 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.24ms. Allocated memory is still 134.2MB. Free memory was 78.7MB in the beginning and 76.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:18:21,877 INFO L158 Benchmark]: Boogie Preprocessor took 64.84ms. Allocated memory is still 134.2MB. Free memory was 76.1MB in the beginning and 74.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:18:21,877 INFO L158 Benchmark]: RCFGBuilder took 998.11ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 74.2MB in the beginning and 119.1MB in the end (delta: -44.9MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2022-11-21 17:18:21,877 INFO L158 Benchmark]: TraceAbstraction took 39696.81ms. Allocated memory was 161.5MB in the beginning and 910.2MB in the end (delta: 748.7MB). Free memory was 118.0MB in the beginning and 469.2MB in the end (delta: -351.2MB). Peak memory consumption was 397.5MB. Max. memory is 16.1GB. [2022-11-21 17:18:21,878 INFO L158 Benchmark]: Witness Printer took 104.90ms. Allocated memory is still 910.2MB. Free memory was 469.2MB in the beginning and 448.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-21 17:18:21,879 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 134.2MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 596.57ms. Allocated memory is still 134.2MB. Free memory was 101.6MB in the beginning and 78.7MB in the end (delta: 22.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.24ms. Allocated memory is still 134.2MB. Free memory was 78.7MB in the beginning and 76.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.84ms. Allocated memory is still 134.2MB. Free memory was 76.1MB in the beginning and 74.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 998.11ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 74.2MB in the beginning and 119.1MB in the end (delta: -44.9MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. * TraceAbstraction took 39696.81ms. Allocated memory was 161.5MB in the beginning and 910.2MB in the end (delta: 748.7MB). Free memory was 118.0MB in the beginning and 469.2MB in the end (delta: -351.2MB). Peak memory consumption was 397.5MB. Max. memory is 16.1GB. * Witness Printer took 104.90ms. Allocated memory is still 910.2MB. Free memory was 469.2MB in the beginning and 448.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; VAL [__unbuffered_cnt=0] [L710] 0 _Bool main$tmp_guard0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0] [L711] 0 _Bool main$tmp_guard1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0] [L713] 0 int x = 0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0] [L715] 0 int y = 0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L716] 0 _Bool y$flush_delayed; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0] [L717] 0 int y$mem_tmp; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0] [L718] 0 _Bool y$r_buff0_thd0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0] [L719] 0 _Bool y$r_buff0_thd1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0] [L720] 0 _Bool y$r_buff0_thd2; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0] [L721] 0 _Bool y$r_buff0_thd3; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0] [L722] 0 _Bool y$r_buff1_thd0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0] [L723] 0 _Bool y$r_buff1_thd1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0] [L724] 0 _Bool y$r_buff1_thd2; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0] [L725] 0 _Bool y$r_buff1_thd3; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0] [L726] 0 _Bool y$read_delayed; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0] [L727] 0 int *y$read_delayed_var; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}] [L728] 0 int y$w_buff0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0] [L729] 0 _Bool y$w_buff0_used; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0] [L730] 0 int y$w_buff1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0] [L731] 0 _Bool y$w_buff1_used; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L733] 0 int z = 0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L734] 0 _Bool weak$$choice0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L735] 0 _Bool weak$$choice2; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L811] 0 pthread_t t2492; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, t2492={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L812] FCALL, FORK 0 pthread_create(&t2492, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2492, ((void *)0), P0, ((void *)0))=-2, t2492={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L813] 0 pthread_t t2493; VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2492={5:0}, t2493={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L814] FCALL, FORK 0 pthread_create(&t2493, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2493, ((void *)0), P1, ((void *)0))=-1, t2492={5:0}, t2493={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L815] 0 pthread_t t2494; VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2492={5:0}, t2493={6:0}, t2494={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L816] FCALL, FORK 0 pthread_create(&t2494, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2494, ((void *)0), P2, ((void *)0))=0, t2492={5:0}, t2493={6:0}, t2494={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L774] 3 y$w_buff1 = y$w_buff0 [L775] 3 y$w_buff0 = 2 [L776] 3 y$w_buff1_used = y$w_buff0_used [L777] 3 y$w_buff0_used = (_Bool)1 [L778] CALL 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 3 !(!expression) [L778] RET 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L779] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L780] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L781] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L782] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L783] 3 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=0] [L786] 3 z = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L739] 1 z = 2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L742] 1 x = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L754] 2 x = 2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L757] 2 y = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L760] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L761] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L762] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L763] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L764] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L789] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L790] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L791] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L792] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L793] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L767] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L747] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L796] 3 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=3, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L818] 0 main$tmp_guard0 = __unbuffered_cnt == 3 VAL [__unbuffered_cnt=3, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2492={5:0}, t2493={6:0}, t2494={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L820] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) VAL [\old(cond)=1, __unbuffered_cnt=3, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, cond=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L820] RET 0 assume_abort_if_not(main$tmp_guard0) [L822] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L823] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L824] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L825] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L826] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [__unbuffered_cnt=3, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2492={5:0}, t2493={6:0}, t2494={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L829] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L830] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L831] 0 y$flush_delayed = weak$$choice2 [L832] 0 y$mem_tmp = y [L833] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L834] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L835] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L836] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L837] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L838] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L839] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L840] 0 main$tmp_guard1 = !(x == 2 && y == 2 && z == 2) [L841] 0 y = y$flush_delayed ? y$mem_tmp : y [L842] 0 y$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=3, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2492={5:0}, t2493={6:0}, t2494={3:0}, weak$$choice0=49, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L844] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression VAL [\old(expression)=0, \old(expression)=1, __unbuffered_cnt=3, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L18] 0 reach_error() VAL [\old(expression)=1, \old(expression)=0, __unbuffered_cnt=3, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 812]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 816]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 814]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 138 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 39.5s, OverallIterations: 20, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 21.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1461 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1461 mSDsluCounter, 2039 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1657 mSDsCounter, 254 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2486 IncrementalHoareTripleChecker+Invalid, 2740 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 254 mSolverCounterUnsat, 382 mSDtfsCounter, 2486 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 329 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 286 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3668occurred in iteration=15, InterpolantAutomatonStates: 260, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 16.9s InterpolantComputationTime, 1555 NumberOfCodeBlocks, 1555 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1450 ConstructedInterpolants, 0 QuantifiedInterpolants, 9303 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 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 RESULT: Ultimate proved your program to be incorrect! [2022-11-21 17:18:21,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801c45ff-a581-43ee-9635-7284a09b85a7/bin/uautomizer-vX5HgA9Q3a/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE