./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-2_4-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841a94eb-ceb5-4b3a-91bb-aea20972971d/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841a94eb-ceb5-4b3a-91bb-aea20972971d/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841a94eb-ceb5-4b3a-91bb-aea20972971d/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841a94eb-ceb5-4b3a-91bb-aea20972971d/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-2_4-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841a94eb-ceb5-4b3a-91bb-aea20972971d/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841a94eb-ceb5-4b3a-91bb-aea20972971d/bin/uautomizer-ZsLfNo2U6R --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 da1ee67f9d4a34134c6c682362ba77c4c77858b09ffe0620532fe4446dd160da --- 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-38b53e6 [2022-11-25 16:41:17,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:41:17,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:41:17,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:41:17,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:41:17,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:41:17,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:41:17,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:41:17,936 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:41:17,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:41:17,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:41:17,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:41:17,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:41:17,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:41:17,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:41:17,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:41:17,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:41:17,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:41:17,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:41:17,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:41:17,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:41:17,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:41:17,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:41:17,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:41:17,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:41:17,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:41:17,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:41:17,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:41:17,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:41:17,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:41:17,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:41:17,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:41:17,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:41:17,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:41:18,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:41:18,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:41:18,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:41:18,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:41:18,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:41:18,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:41:18,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:41:18,005 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841a94eb-ceb5-4b3a-91bb-aea20972971d/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 16:41:18,045 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:41:18,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:41:18,046 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:41:18,046 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:41:18,050 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:41:18,050 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:41:18,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:41:18,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:41:18,051 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:41:18,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:41:18,053 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:41:18,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:41:18,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:41:18,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:41:18,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:41:18,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:41:18,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:41:18,054 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:41:18,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:41:18,055 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:41:18,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:41:18,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:41:18,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:41:18,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:41:18,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:41:18,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:41:18,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:41:18,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:41:18,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:41:18,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:41:18,059 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:41:18,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:41:18,059 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:41:18,059 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:41:18,060 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_841a94eb-ceb5-4b3a-91bb-aea20972971d/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841a94eb-ceb5-4b3a-91bb-aea20972971d/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da1ee67f9d4a34134c6c682362ba77c4c77858b09ffe0620532fe4446dd160da [2022-11-25 16:41:18,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:41:18,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:41:18,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:41:18,453 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:41:18,454 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:41:18,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841a94eb-ceb5-4b3a-91bb-aea20972971d/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/ldv-races/race-2_4-container_of.i [2022-11-25 16:41:21,879 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:41:22,254 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:41:22,255 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841a94eb-ceb5-4b3a-91bb-aea20972971d/sv-benchmarks/c/ldv-races/race-2_4-container_of.i [2022-11-25 16:41:22,281 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841a94eb-ceb5-4b3a-91bb-aea20972971d/bin/uautomizer-ZsLfNo2U6R/data/817aea5e7/5a6cd957a7c2403ca51808151ff6a663/FLAGa55a79963 [2022-11-25 16:41:22,297 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841a94eb-ceb5-4b3a-91bb-aea20972971d/bin/uautomizer-ZsLfNo2U6R/data/817aea5e7/5a6cd957a7c2403ca51808151ff6a663 [2022-11-25 16:41:22,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:41:22,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:41:22,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:41:22,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:41:22,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:41:22,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:41:22" (1/1) ... [2022-11-25 16:41:22,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14a71163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:22, skipping insertion in model container [2022-11-25 16:41:22,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:41:22" (1/1) ... [2022-11-25 16:41:22,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:41:22,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:41:22,520 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 16:41:23,237 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_841a94eb-ceb5-4b3a-91bb-aea20972971d/sv-benchmarks/c/ldv-races/race-2_4-container_of.i[75002,75015] [2022-11-25 16:41:23,249 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:41:23,250 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:41:23,250 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:41:23,251 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:41:23,252 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:41:23,252 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:41:23,275 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:41:23,276 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:41:23,276 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:41:23,277 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:41:23,277 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:41:23,278 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:41:23,278 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:41:23,279 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:41:23,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:41:23,334 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:41:23,361 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 16:41:23,442 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_841a94eb-ceb5-4b3a-91bb-aea20972971d/sv-benchmarks/c/ldv-races/race-2_4-container_of.i[75002,75015] [2022-11-25 16:41:23,447 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:41:23,448 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:41:23,448 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:41:23,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:41:23,450 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:41:23,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:41:23,467 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:41:23,468 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:41:23,468 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:41:23,469 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:41:23,469 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:41:23,470 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:41:23,470 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:41:23,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:41:23,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:41:23,641 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:41:23,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:23 WrapperNode [2022-11-25 16:41:23,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:41:23,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:41:23,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:41:23,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:41:23,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:23" (1/1) ... [2022-11-25 16:41:23,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:23" (1/1) ... [2022-11-25 16:41:23,746 INFO L138 Inliner]: procedures = 469, calls = 63, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 143 [2022-11-25 16:41:23,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:41:23,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:41:23,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:41:23,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:41:23,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:23" (1/1) ... [2022-11-25 16:41:23,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:23" (1/1) ... [2022-11-25 16:41:23,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:23" (1/1) ... [2022-11-25 16:41:23,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:23" (1/1) ... [2022-11-25 16:41:23,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:23" (1/1) ... [2022-11-25 16:41:23,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:23" (1/1) ... [2022-11-25 16:41:23,781 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:23" (1/1) ... [2022-11-25 16:41:23,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:23" (1/1) ... [2022-11-25 16:41:23,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:41:23,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:41:23,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:41:23,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:41:23,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:23" (1/1) ... [2022-11-25 16:41:23,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:41:23,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841a94eb-ceb5-4b3a-91bb-aea20972971d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:41:23,827 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841a94eb-ceb5-4b3a-91bb-aea20972971d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:41:23,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841a94eb-ceb5-4b3a-91bb-aea20972971d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:41:23,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 16:41:23,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:41:23,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 16:41:23,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 16:41:23,895 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 16:41:23,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:41:23,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 16:41:23,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:41:23,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:41:23,896 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-11-25 16:41:23,896 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-11-25 16:41:23,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:41:23,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 16:41:23,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:41:23,898 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 16:41:24,304 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:41:24,307 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:41:24,673 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:41:24,847 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:41:24,847 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 16:41:24,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:41:24 BoogieIcfgContainer [2022-11-25 16:41:24,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:41:24,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:41:24,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:41:24,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:41:24,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:41:22" (1/3) ... [2022-11-25 16:41:24,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f36e2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:41:24, skipping insertion in model container [2022-11-25 16:41:24,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:23" (2/3) ... [2022-11-25 16:41:24,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f36e2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:41:24, skipping insertion in model container [2022-11-25 16:41:24,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:41:24" (3/3) ... [2022-11-25 16:41:24,870 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_4-container_of.i [2022-11-25 16:41:24,896 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 16:41:24,921 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:41:24,921 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-25 16:41:24,921 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 16:41:25,064 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 16:41:25,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 175 transitions, 366 flow [2022-11-25 16:41:25,264 INFO L130 PetriNetUnfolder]: 8/226 cut-off events. [2022-11-25 16:41:25,264 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 16:41:25,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 226 events. 8/226 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 427 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 122. Up to 4 conditions per place. [2022-11-25 16:41:25,271 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 175 transitions, 366 flow [2022-11-25 16:41:25,284 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 161 transitions, 334 flow [2022-11-25 16:41:25,289 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:41:25,311 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 161 transitions, 334 flow [2022-11-25 16:41:25,317 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 161 transitions, 334 flow [2022-11-25 16:41:25,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 161 transitions, 334 flow [2022-11-25 16:41:25,397 INFO L130 PetriNetUnfolder]: 5/203 cut-off events. [2022-11-25 16:41:25,398 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 16:41:25,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 203 events. 5/203 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 366 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 110. Up to 4 conditions per place. [2022-11-25 16:41:25,401 INFO L119 LiptonReduction]: Number of co-enabled transitions 2964 [2022-11-25 16:42:26,206 INFO L134 LiptonReduction]: Checked pairs total: 6948 [2022-11-25 16:42:26,207 INFO L136 LiptonReduction]: Total number of compositions: 158 [2022-11-25 16:42:26,225 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:42:26,233 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;@25099f9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:42:26,233 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-25 16:42:26,240 INFO L130 PetriNetUnfolder]: 0/12 cut-off events. [2022-11-25 16:42:26,240 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:42:26,241 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:42:26,241 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 16:42:26,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:42:26,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:26,257 INFO L85 PathProgramCache]: Analyzing trace with hash 612375250, now seen corresponding path program 1 times [2022-11-25 16:42:26,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:26,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917959111] [2022-11-25 16:42:26,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:26,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:27,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:42:27,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:42:27,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917959111] [2022-11-25 16:42:27,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917959111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:42:27,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:42:27,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:42:27,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276347263] [2022-11-25 16:42:27,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:42:27,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:42:27,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:42:27,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:42:27,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:42:27,203 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 333 [2022-11-25 16:42:27,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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) [2022-11-25 16:42:27,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:42:27,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 333 [2022-11-25 16:42:27,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:42:27,671 INFO L130 PetriNetUnfolder]: 882/1496 cut-off events. [2022-11-25 16:42:27,671 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-25 16:42:27,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3002 conditions, 1496 events. 882/1496 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7342 event pairs, 637 based on Foata normal form. 37/1350 useless extension candidates. Maximal degree in co-relation 2904. Up to 1262 conditions per place. [2022-11-25 16:42:27,686 INFO L137 encePairwiseOnDemand]: 325/333 looper letters, 39 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2022-11-25 16:42:27,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 196 flow [2022-11-25 16:42:27,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:42:27,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:42:27,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2022-11-25 16:42:27,719 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2022-11-25 16:42:27,720 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2022-11-25 16:42:27,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2022-11-25 16:42:27,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:42:27,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2022-11-25 16:42:27,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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) [2022-11-25 16:42:27,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-11-25 16:42:27,758 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-11-25 16:42:27,761 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 84 flow. Second operand 3 states and 471 transitions. [2022-11-25 16:42:27,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 196 flow [2022-11-25 16:42:27,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 47 transitions, 188 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 16:42:27,772 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 110 flow [2022-11-25 16:42:27,774 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2022-11-25 16:42:27,782 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2022-11-25 16:42:27,782 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 110 flow [2022-11-25 16:42:27,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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) [2022-11-25 16:42:27,783 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:42:27,783 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 16:42:27,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:42:27,784 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:42:27,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:27,796 INFO L85 PathProgramCache]: Analyzing trace with hash 19754052, now seen corresponding path program 1 times [2022-11-25 16:42:27,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:27,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500492900] [2022-11-25 16:42:27,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:27,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:28,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:42:28,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:42:28,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500492900] [2022-11-25 16:42:28,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500492900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:42:28,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:42:28,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:42:28,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052486519] [2022-11-25 16:42:28,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:42:28,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:42:28,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:42:28,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:42:28,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:42:28,224 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 333 [2022-11-25 16:42:28,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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) [2022-11-25 16:42:28,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:42:28,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 333 [2022-11-25 16:42:28,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:42:28,648 INFO L130 PetriNetUnfolder]: 930/1618 cut-off events. [2022-11-25 16:42:28,649 INFO L131 PetriNetUnfolder]: For 324/324 co-relation queries the response was YES. [2022-11-25 16:42:28,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3805 conditions, 1618 events. 930/1618 cut-off events. For 324/324 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8577 event pairs, 681 based on Foata normal form. 0/1441 useless extension candidates. Maximal degree in co-relation 2140. Up to 1405 conditions per place. [2022-11-25 16:42:28,664 INFO L137 encePairwiseOnDemand]: 326/333 looper letters, 41 selfloop transitions, 9 changer transitions 1/54 dead transitions. [2022-11-25 16:42:28,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 54 transitions, 262 flow [2022-11-25 16:42:28,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:42:28,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:42:28,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2022-11-25 16:42:28,668 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4674674674674675 [2022-11-25 16:42:28,668 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2022-11-25 16:42:28,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2022-11-25 16:42:28,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:42:28,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2022-11-25 16:42:28,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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) [2022-11-25 16:42:28,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-11-25 16:42:28,676 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-11-25 16:42:28,676 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 110 flow. Second operand 3 states and 467 transitions. [2022-11-25 16:42:28,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 54 transitions, 262 flow [2022-11-25 16:42:28,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 54 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:42:28,688 INFO L231 Difference]: Finished difference. Result has 41 places, 46 transitions, 177 flow [2022-11-25 16:42:28,688 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=41, PETRI_TRANSITIONS=46} [2022-11-25 16:42:28,689 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2022-11-25 16:42:28,689 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 46 transitions, 177 flow [2022-11-25 16:42:28,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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) [2022-11-25 16:42:28,691 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:42:28,691 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 16:42:28,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 16:42:28,692 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:42:28,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:28,695 INFO L85 PathProgramCache]: Analyzing trace with hash 19769944, now seen corresponding path program 1 times [2022-11-25 16:42:28,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:28,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544164667] [2022-11-25 16:42:28,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:28,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:28,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:42:28,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:42:28,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544164667] [2022-11-25 16:42:28,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544164667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:42:28,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:42:28,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:42:28,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531748246] [2022-11-25 16:42:28,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:42:28,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:42:28,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:42:28,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:42:28,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:42:28,869 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 333 [2022-11-25 16:42:28,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 46 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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) [2022-11-25 16:42:28,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:42:28,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 333 [2022-11-25 16:42:28,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:42:29,217 INFO L130 PetriNetUnfolder]: 743/1380 cut-off events. [2022-11-25 16:42:29,218 INFO L131 PetriNetUnfolder]: For 758/800 co-relation queries the response was YES. [2022-11-25 16:42:29,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3451 conditions, 1380 events. 743/1380 cut-off events. For 758/800 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 7999 event pairs, 612 based on Foata normal form. 1/1290 useless extension candidates. Maximal degree in co-relation 1425. Up to 1140 conditions per place. [2022-11-25 16:42:29,229 INFO L137 encePairwiseOnDemand]: 330/333 looper letters, 33 selfloop transitions, 0 changer transitions 2/47 dead transitions. [2022-11-25 16:42:29,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 252 flow [2022-11-25 16:42:29,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:42:29,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:42:29,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 492 transitions. [2022-11-25 16:42:29,233 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2022-11-25 16:42:29,233 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 492 transitions. [2022-11-25 16:42:29,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 492 transitions. [2022-11-25 16:42:29,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:42:29,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 492 transitions. [2022-11-25 16:42:29,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 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) [2022-11-25 16:42:29,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-11-25 16:42:29,239 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-11-25 16:42:29,240 INFO L175 Difference]: Start difference. First operand has 41 places, 46 transitions, 177 flow. Second operand 3 states and 492 transitions. [2022-11-25 16:42:29,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 252 flow [2022-11-25 16:42:29,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:42:29,244 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 170 flow [2022-11-25 16:42:29,244 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2022-11-25 16:42:29,246 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2022-11-25 16:42:29,246 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 170 flow [2022-11-25 16:42:29,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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) [2022-11-25 16:42:29,247 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:42:29,250 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:42:29,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 16:42:29,253 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:42:29,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:29,255 INFO L85 PathProgramCache]: Analyzing trace with hash 305023047, now seen corresponding path program 1 times [2022-11-25 16:42:29,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:29,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105944656] [2022-11-25 16:42:29,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:29,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:29,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:42:29,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:42:29,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105944656] [2022-11-25 16:42:29,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105944656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:42:29,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:42:29,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:42:29,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865366341] [2022-11-25 16:42:29,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:42:29,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:42:29,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:42:29,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:42:29,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:42:29,688 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 333 [2022-11-25 16:42:29,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 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) [2022-11-25 16:42:29,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:42:29,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 333 [2022-11-25 16:42:29,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:42:30,120 INFO L130 PetriNetUnfolder]: 1116/1965 cut-off events. [2022-11-25 16:42:30,120 INFO L131 PetriNetUnfolder]: For 1082/1082 co-relation queries the response was YES. [2022-11-25 16:42:30,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5112 conditions, 1965 events. 1116/1965 cut-off events. For 1082/1082 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 11263 event pairs, 627 based on Foata normal form. 0/1864 useless extension candidates. Maximal degree in co-relation 5106. Up to 1562 conditions per place. [2022-11-25 16:42:30,136 INFO L137 encePairwiseOnDemand]: 325/333 looper letters, 50 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2022-11-25 16:42:30,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 60 transitions, 331 flow [2022-11-25 16:42:30,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:42:30,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:42:30,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2022-11-25 16:42:30,139 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4724724724724725 [2022-11-25 16:42:30,139 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 472 transitions. [2022-11-25 16:42:30,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 472 transitions. [2022-11-25 16:42:30,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:42:30,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 472 transitions. [2022-11-25 16:42:30,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 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) [2022-11-25 16:42:30,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-11-25 16:42:30,145 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-11-25 16:42:30,146 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 170 flow. Second operand 3 states and 472 transitions. [2022-11-25 16:42:30,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 60 transitions, 331 flow [2022-11-25 16:42:30,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 60 transitions, 327 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-25 16:42:30,150 INFO L231 Difference]: Finished difference. Result has 45 places, 51 transitions, 236 flow [2022-11-25 16:42:30,150 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=45, PETRI_TRANSITIONS=51} [2022-11-25 16:42:30,151 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2022-11-25 16:42:30,151 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 51 transitions, 236 flow [2022-11-25 16:42:30,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 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) [2022-11-25 16:42:30,152 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:42:30,152 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:42:30,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 16:42:30,153 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:42:30,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:30,153 INFO L85 PathProgramCache]: Analyzing trace with hash 865780269, now seen corresponding path program 1 times [2022-11-25 16:42:30,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:30,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412173453] [2022-11-25 16:42:30,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:30,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:30,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:42:30,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:42:30,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412173453] [2022-11-25 16:42:30,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412173453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:42:30,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:42:30,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:42:30,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044964603] [2022-11-25 16:42:30,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:42:30,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:42:30,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:42:30,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:42:30,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:42:30,424 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 333 [2022-11-25 16:42:30,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 51 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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) [2022-11-25 16:42:30,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:42:30,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 333 [2022-11-25 16:42:30,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:42:30,947 INFO L130 PetriNetUnfolder]: 1407/2451 cut-off events. [2022-11-25 16:42:30,948 INFO L131 PetriNetUnfolder]: For 2795/2795 co-relation queries the response was YES. [2022-11-25 16:42:30,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7198 conditions, 2451 events. 1407/2451 cut-off events. For 2795/2795 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 14101 event pairs, 767 based on Foata normal form. 0/2386 useless extension candidates. Maximal degree in co-relation 7191. Up to 1890 conditions per place. [2022-11-25 16:42:30,967 INFO L137 encePairwiseOnDemand]: 325/333 looper letters, 56 selfloop transitions, 12 changer transitions 0/70 dead transitions. [2022-11-25 16:42:30,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 70 transitions, 475 flow [2022-11-25 16:42:30,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:42:30,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:42:30,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2022-11-25 16:42:30,971 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47347347347347346 [2022-11-25 16:42:30,971 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 473 transitions. [2022-11-25 16:42:30,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 473 transitions. [2022-11-25 16:42:30,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:42:30,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 473 transitions. [2022-11-25 16:42:30,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 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) [2022-11-25 16:42:30,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-11-25 16:42:30,977 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-11-25 16:42:30,977 INFO L175 Difference]: Start difference. First operand has 45 places, 51 transitions, 236 flow. Second operand 3 states and 473 transitions. [2022-11-25 16:42:30,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 70 transitions, 475 flow [2022-11-25 16:42:30,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 70 transitions, 419 flow, removed 16 selfloop flow, removed 2 redundant places. [2022-11-25 16:42:30,985 INFO L231 Difference]: Finished difference. Result has 47 places, 61 transitions, 330 flow [2022-11-25 16:42:30,985 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=330, PETRI_PLACES=47, PETRI_TRANSITIONS=61} [2022-11-25 16:42:30,986 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2022-11-25 16:42:30,987 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 61 transitions, 330 flow [2022-11-25 16:42:30,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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) [2022-11-25 16:42:30,988 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:42:30,988 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:42:30,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 16:42:30,988 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:42:30,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:30,989 INFO L85 PathProgramCache]: Analyzing trace with hash -563843009, now seen corresponding path program 1 times [2022-11-25 16:42:30,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:30,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735790573] [2022-11-25 16:42:30,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:30,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:31,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:42:31,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:42:31,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735790573] [2022-11-25 16:42:31,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735790573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:42:31,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:42:31,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:42:31,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700829655] [2022-11-25 16:42:31,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:42:31,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:42:31,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:42:31,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:42:31,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:42:31,133 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 333 [2022-11-25 16:42:31,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 61 transitions, 330 flow. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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) [2022-11-25 16:42:31,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:42:31,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 333 [2022-11-25 16:42:31,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:42:31,452 INFO L130 PetriNetUnfolder]: 774/1420 cut-off events. [2022-11-25 16:42:31,453 INFO L131 PetriNetUnfolder]: For 2090/2147 co-relation queries the response was YES. [2022-11-25 16:42:31,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4389 conditions, 1420 events. 774/1420 cut-off events. For 2090/2147 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8047 event pairs, 435 based on Foata normal form. 57/1372 useless extension candidates. Maximal degree in co-relation 4381. Up to 1048 conditions per place. [2022-11-25 16:42:31,467 INFO L137 encePairwiseOnDemand]: 330/333 looper letters, 39 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2022-11-25 16:42:31,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 354 flow [2022-11-25 16:42:31,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:42:31,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:42:31,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2022-11-25 16:42:31,470 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4944944944944945 [2022-11-25 16:42:31,470 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2022-11-25 16:42:31,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2022-11-25 16:42:31,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:42:31,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2022-11-25 16:42:31,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 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) [2022-11-25 16:42:31,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-11-25 16:42:31,476 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-11-25 16:42:31,477 INFO L175 Difference]: Start difference. First operand has 47 places, 61 transitions, 330 flow. Second operand 3 states and 494 transitions. [2022-11-25 16:42:31,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 354 flow [2022-11-25 16:42:31,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 52 transitions, 290 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-11-25 16:42:31,488 INFO L231 Difference]: Finished difference. Result has 38 places, 44 transitions, 188 flow [2022-11-25 16:42:31,488 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=38, PETRI_TRANSITIONS=44} [2022-11-25 16:42:31,489 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2022-11-25 16:42:31,489 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 44 transitions, 188 flow [2022-11-25 16:42:31,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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) [2022-11-25 16:42:31,490 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:42:31,491 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:42:31,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 16:42:31,491 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 16:42:31,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:31,492 INFO L85 PathProgramCache]: Analyzing trace with hash -563279347, now seen corresponding path program 1 times [2022-11-25 16:42:31,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:31,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135692450] [2022-11-25 16:42:31,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:31,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:42:31,553 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 16:42:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:42:31,608 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 16:42:31,612 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 16:42:31,614 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2022-11-25 16:42:31,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2022-11-25 16:42:31,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2022-11-25 16:42:31,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2022-11-25 16:42:31,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2022-11-25 16:42:31,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2022-11-25 16:42:31,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2022-11-25 16:42:31,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2022-11-25 16:42:31,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 16:42:31,622 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:42:31,629 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 16:42:31,629 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 16:42:31,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 04:42:31 BasicIcfg [2022-11-25 16:42:31,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 16:42:31,700 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 16:42:31,700 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 16:42:31,700 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 16:42:31,701 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:41:24" (3/4) ... [2022-11-25 16:42:31,703 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-25 16:42:31,797 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841a94eb-ceb5-4b3a-91bb-aea20972971d/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 16:42:31,797 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 16:42:31,798 INFO L158 Benchmark]: Toolchain (without parser) took 69496.85ms. Allocated memory was 138.4MB in the beginning and 211.8MB in the end (delta: 73.4MB). Free memory was 71.2MB in the beginning and 149.9MB in the end (delta: -78.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 16:42:31,798 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 138.4MB. Free memory is still 106.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 16:42:31,799 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1339.18ms. Allocated memory was 138.4MB in the beginning and 172.0MB in the end (delta: 33.6MB). Free memory was 71.0MB in the beginning and 104.4MB in the end (delta: -33.4MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. [2022-11-25 16:42:31,799 INFO L158 Benchmark]: Boogie Procedure Inliner took 104.13ms. Allocated memory is still 172.0MB. Free memory was 104.4MB in the beginning and 100.6MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 16:42:31,799 INFO L158 Benchmark]: Boogie Preprocessor took 42.17ms. Allocated memory is still 172.0MB. Free memory was 100.6MB in the beginning and 98.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 16:42:31,800 INFO L158 Benchmark]: RCFGBuilder took 1060.54ms. Allocated memory is still 172.0MB. Free memory was 98.1MB in the beginning and 133.3MB in the end (delta: -35.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-25 16:42:31,800 INFO L158 Benchmark]: TraceAbstraction took 66835.56ms. Allocated memory was 172.0MB in the beginning and 211.8MB in the end (delta: 39.8MB). Free memory was 133.3MB in the beginning and 155.1MB in the end (delta: -21.8MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. [2022-11-25 16:42:31,801 INFO L158 Benchmark]: Witness Printer took 97.54ms. Allocated memory is still 211.8MB. Free memory was 155.1MB in the beginning and 149.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 16:42:31,804 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 138.4MB. Free memory is still 106.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1339.18ms. Allocated memory was 138.4MB in the beginning and 172.0MB in the end (delta: 33.6MB). Free memory was 71.0MB in the beginning and 104.4MB in the end (delta: -33.4MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 104.13ms. Allocated memory is still 172.0MB. Free memory was 104.4MB in the beginning and 100.6MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.17ms. Allocated memory is still 172.0MB. Free memory was 100.6MB in the beginning and 98.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1060.54ms. Allocated memory is still 172.0MB. Free memory was 98.1MB in the beginning and 133.3MB in the end (delta: -35.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 66835.56ms. Allocated memory was 172.0MB in the beginning and 211.8MB in the end (delta: 39.8MB). Free memory was 133.3MB in the beginning and 155.1MB in the end (delta: -21.8MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. * Witness Printer took 97.54ms. Allocated memory is still 211.8MB. Free memory was 155.1MB in the beginning and 149.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 60.9s, 163 PlacesBefore, 40 PlacesAfterwards, 161 TransitionsBefore, 36 TransitionsAfterwards, 2964 CoEnabledTransitionPairs, 6 FixpointIterations, 83 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 158 TotalNumberOfCompositions, 6948 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3010, independent: 2757, independent conditional: 0, independent unconditional: 2757, dependent: 178, dependent conditional: 0, dependent unconditional: 178, unknown: 75, unknown conditional: 0, unknown unconditional: 75] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2026, independent: 1953, independent conditional: 0, independent unconditional: 1953, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 20, unknown conditional: 0, unknown unconditional: 20] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2026, independent: 1945, independent conditional: 0, independent unconditional: 1945, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 81, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 20, unknown conditional: 0, unknown unconditional: 20] , SemanticIndependenceRelation.Query Time [ms]: [ total: 43077, independent: 127, independent conditional: 0, independent unconditional: 127, dependent: 521, dependent conditional: 0, dependent unconditional: 521, unknown: 42429, unknown conditional: 0, unknown unconditional: 42429] ], Cache Queries: [ total: 3010, independent: 804, independent conditional: 0, independent unconditional: 804, dependent: 125, dependent conditional: 0, dependent unconditional: 125, unknown: 2081, unknown conditional: 0, unknown unconditional: 2081] , Statistics on independence cache: Total cache size (in pairs): 140, Positive cache size: 118, Positive conditional cache size: 0, Positive unconditional cache size: 118, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Unknown cache size: 12, Unknown conditional cache size: 0, Unknown unconditional cache size: 12 - CounterExampleResult [Line: 1675]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1676] 0 pthread_t t1,t2; [L1745] CALL, EXPR 0 my_drv_init() [L1739] 0 return 0; [L1745] RET, EXPR 0 my_drv_init() [L1745] 0 int ret = my_drv_init(); [L1746] COND TRUE 0 ret==0 [L1747] 0 int probe_ret; [L1748] 0 struct my_data data; [L1749] CALL, EXPR 0 my_drv_probe(&data) [L1706] 0 struct device *d = &data->dev; [L1708] 0 data->shared.a = 0 [L1709] 0 data->shared.b = 0 [L1710] 0 int res = __VERIFIER_nondet_int(); [L1711] COND FALSE 0 !(\read(res)) [L1713] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, (void *)d) VAL [arg={6:24}, d={6:24}, data={6:0}, data={6:0}, pthread_create(&t1, ((void *)0), my_callback, (void *)d)=-1, res=0, t1={3:0}, t2={4:0}] [L1689] 1 struct device *dev = (struct device*)arg; [L1690] 1 struct my_data *data; [L1691] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1714] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, (void *)d) VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, d={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, pthread_create(&t2, ((void *)0), my_callback, (void *)d)=0, pthread_mutex_lock (&data->lock)=0, res=0, t1={3:0}, t2={4:0}] [L1715] 0 return 0; [L1749] RET, EXPR 0 my_drv_probe(&data) [L1749] 0 probe_ret = my_drv_probe(&data) [L1750] COND TRUE 0 probe_ret==0 [L1751] CALL 0 my_drv_disconnect(&data) [L1721] 0 void *status; [L1723] 0 data->shared.a = 3 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, pthread_mutex_lock (&data->lock)=0, status={5:0}, t1={3:0}, t2={4:0}] [L1694] 1 data->shared.a = 1 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, t1={3:0}, t2={4:0}] [L1726] 0 data->shared.b = 3 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, status={5:0}, t1={3:0}, t2={4:0}] [L1729] EXPR 0 data->shared.a [L1729] CALL 0 ldv_assert(data->shared.a==3) [L1675] COND TRUE 0 !expression [L1675] 0 reach_error() VAL [\old(expression)=0, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, expression=0, t1={3:0}, t2={4:0}] - UnprovableResult [Line: 1675]: 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: 1675]: 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: 1675]: 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: 1675]: 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: 1675]: 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: 1714]: 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: 1713]: 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 4 procedures, 185 locations, 8 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: 66.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 61.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 270 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 91 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 574 IncrementalHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 26 mSDtfsCounter, 574 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=330occurred in iteration=5, InterpolantAutomatonStates: 18, 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, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 159 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! [2022-11-25 16:42:31,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_841a94eb-ceb5-4b3a-91bb-aea20972971d/bin/uautomizer-ZsLfNo2U6R/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