./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe005_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f24c568-747a-473a-93c2-42e34652c3a3/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f24c568-747a-473a-93c2-42e34652c3a3/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f24c568-747a-473a-93c2-42e34652c3a3/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f24c568-747a-473a-93c2-42e34652c3a3/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe005_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f24c568-747a-473a-93c2-42e34652c3a3/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f24c568-747a-473a-93c2-42e34652c3a3/bin/uautomizer-uyxdKDjOR8 --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 0f4fff0b2b9fbf3a1c21190a7a3a2488ff184faa22678fe9af5f2740e4422fce --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 20:16:21,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:16:21,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:16:21,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:16:21,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:16:21,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:16:21,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:16:21,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:16:21,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:16:21,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:16:21,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:16:21,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:16:21,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:16:21,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:16:21,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:16:21,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:16:21,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:16:21,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:16:21,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:16:21,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:16:21,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:16:21,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:16:21,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:16:21,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:16:21,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:16:21,384 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:16:21,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:16:21,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:16:21,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:16:21,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:16:21,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:16:21,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:16:21,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:16:21,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:16:21,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:16:21,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:16:21,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:16:21,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:16:21,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:16:21,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:16:21,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:16:21,393 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f24c568-747a-473a-93c2-42e34652c3a3/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 20:16:21,408 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:16:21,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:16:21,408 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:16:21,408 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:16:21,409 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:16:21,409 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:16:21,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:16:21,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:16:21,410 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:16:21,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:16:21,410 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:16:21,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:16:21,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:16:21,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:16:21,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:16:21,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:16:21,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:16:21,411 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:16:21,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:16:21,412 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:16:21,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:16:21,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:16:21,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:16:21,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:16:21,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:16:21,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:16:21,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:16:21,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:16:21,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:16:21,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:16:21,414 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:16:21,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:16:21,414 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:16:21,414 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:16:21,414 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:16:21,414 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_6f24c568-747a-473a-93c2-42e34652c3a3/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f24c568-747a-473a-93c2-42e34652c3a3/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f4fff0b2b9fbf3a1c21190a7a3a2488ff184faa22678fe9af5f2740e4422fce [2022-12-13 20:16:21,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:16:21,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:16:21,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:16:21,599 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:16:21,599 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:16:21,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f24c568-747a-473a-93c2-42e34652c3a3/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-wmm/safe005_tso.i [2022-12-13 20:16:24,161 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:16:24,348 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:16:24,348 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f24c568-747a-473a-93c2-42e34652c3a3/sv-benchmarks/c/pthread-wmm/safe005_tso.i [2022-12-13 20:16:24,358 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f24c568-747a-473a-93c2-42e34652c3a3/bin/uautomizer-uyxdKDjOR8/data/1e0d6d594/980c0cd836a341b1868bc81bbe6fb628/FLAG426b4766f [2022-12-13 20:16:24,756 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f24c568-747a-473a-93c2-42e34652c3a3/bin/uautomizer-uyxdKDjOR8/data/1e0d6d594/980c0cd836a341b1868bc81bbe6fb628 [2022-12-13 20:16:24,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:16:24,764 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:16:24,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:16:24,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:16:24,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:16:24,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:16:24" (1/1) ... [2022-12-13 20:16:24,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d331aeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:24, skipping insertion in model container [2022-12-13 20:16:24,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:16:24" (1/1) ... [2022-12-13 20:16:24,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:16:24,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:16:24,938 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_6f24c568-747a-473a-93c2-42e34652c3a3/sv-benchmarks/c/pthread-wmm/safe005_tso.i[945,958] [2022-12-13 20:16:25,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,055 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,055 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,055 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,055 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,061 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,066 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,067 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,069 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:16:25,078 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:16:25,087 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_6f24c568-747a-473a-93c2-42e34652c3a3/sv-benchmarks/c/pthread-wmm/safe005_tso.i[945,958] [2022-12-13 20:16:25,112 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,113 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,113 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,114 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,114 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,114 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,114 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,115 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,115 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,116 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,116 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,117 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,117 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,117 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,118 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,118 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,118 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,119 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,119 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,120 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,120 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,120 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,120 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,120 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,120 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,121 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,124 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,125 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,125 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,125 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,125 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:16:25,126 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:16:25,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:16:25,151 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:16:25,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:25 WrapperNode [2022-12-13 20:16:25,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:16:25,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:16:25,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:16:25,152 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:16:25,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:25" (1/1) ... [2022-12-13 20:16:25,170 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:25" (1/1) ... [2022-12-13 20:16:25,188 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-13 20:16:25,189 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:16:25,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:16:25,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:16:25,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:16:25,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:25" (1/1) ... [2022-12-13 20:16:25,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:25" (1/1) ... [2022-12-13 20:16:25,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:25" (1/1) ... [2022-12-13 20:16:25,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:25" (1/1) ... [2022-12-13 20:16:25,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:25" (1/1) ... [2022-12-13 20:16:25,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:25" (1/1) ... [2022-12-13 20:16:25,202 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:25" (1/1) ... [2022-12-13 20:16:25,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:25" (1/1) ... [2022-12-13 20:16:25,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:16:25,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:16:25,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:16:25,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:16:25,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:25" (1/1) ... [2022-12-13 20:16:25,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:16:25,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f24c568-747a-473a-93c2-42e34652c3a3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:16:25,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f24c568-747a-473a-93c2-42e34652c3a3/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:16:25,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f24c568-747a-473a-93c2-42e34652c3a3/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:16:25,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:16:25,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 20:16:25,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:16:25,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:16:25,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:16:25,263 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 20:16:25,263 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 20:16:25,263 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 20:16:25,263 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 20:16:25,263 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 20:16:25,263 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 20:16:25,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:16:25,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 20:16:25,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:16:25,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:16:25,265 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 20:16:25,347 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:16:25,349 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:16:25,461 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:16:25,465 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:16:25,466 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 20:16:25,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:16:25 BoogieIcfgContainer [2022-12-13 20:16:25,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:16:25,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:16:25,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:16:25,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:16:25,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:16:24" (1/3) ... [2022-12-13 20:16:25,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2500b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:16:25, skipping insertion in model container [2022-12-13 20:16:25,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:16:25" (2/3) ... [2022-12-13 20:16:25,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2500b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:16:25, skipping insertion in model container [2022-12-13 20:16:25,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:16:25" (3/3) ... [2022-12-13 20:16:25,473 INFO L112 eAbstractionObserver]: Analyzing ICFG safe005_tso.i [2022-12-13 20:16:25,479 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 20:16:25,487 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:16:25,487 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 20:16:25,487 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 20:16:25,529 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 20:16:25,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-12-13 20:16:25,586 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-12-13 20:16:25,586 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:16:25,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-12-13 20:16:25,590 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-12-13 20:16:25,593 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-12-13 20:16:25,595 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:16:25,602 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 75 transitions, 159 flow [2022-12-13 20:16:25,604 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 75 transitions, 159 flow [2022-12-13 20:16:25,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 75 transitions, 159 flow [2022-12-13 20:16:25,632 INFO L130 PetriNetUnfolder]: 1/75 cut-off events. [2022-12-13 20:16:25,632 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:16:25,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 1/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 36 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2022-12-13 20:16:25,634 INFO L119 LiptonReduction]: Number of co-enabled transitions 1116 [2022-12-13 20:16:27,026 INFO L134 LiptonReduction]: Checked pairs total: 2345 [2022-12-13 20:16:27,026 INFO L136 LiptonReduction]: Total number of compositions: 64 [2022-12-13 20:16:27,037 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:16:27,041 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;@75a053d5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:16:27,041 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 20:16:27,045 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2022-12-13 20:16:27,045 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:16:27,045 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:16:27,046 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:16:27,046 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 20:16:27,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:27,050 INFO L85 PathProgramCache]: Analyzing trace with hash -569792737, now seen corresponding path program 1 times [2022-12-13 20:16:27,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:16:27,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975843112] [2022-12-13 20:16:27,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:16:27,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:16:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:27,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:16:27,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:16:27,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975843112] [2022-12-13 20:16:27,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975843112] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:16:27,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:16:27,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:16:27,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219123642] [2022-12-13 20:16:27,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:16:27,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:16:27,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:16:27,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:16:27,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:16:27,405 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 156 [2022-12-13 20:16:27,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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) [2022-12-13 20:16:27,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:16:27,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 156 [2022-12-13 20:16:27,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:16:27,520 INFO L130 PetriNetUnfolder]: 577/932 cut-off events. [2022-12-13 20:16:27,520 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-12-13 20:16:27,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1923 conditions, 932 events. 577/932 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4221 event pairs, 206 based on Foata normal form. 58/990 useless extension candidates. Maximal degree in co-relation 1912. Up to 482 conditions per place. [2022-12-13 20:16:27,526 INFO L137 encePairwiseOnDemand]: 148/156 looper letters, 24 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2022-12-13 20:16:27,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 135 flow [2022-12-13 20:16:27,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:16:27,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:16:27,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2022-12-13 20:16:27,536 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2022-12-13 20:16:27,536 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2022-12-13 20:16:27,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2022-12-13 20:16:27,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:16:27,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2022-12-13 20:16:27,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2022-12-13 20:16:27,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 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) [2022-12-13 20:16:27,545 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 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) [2022-12-13 20:16:27,546 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 264 transitions. [2022-12-13 20:16:27,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 135 flow [2022-12-13 20:16:27,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 130 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 20:16:27,549 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 82 flow [2022-12-13 20:16:27,551 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2022-12-13 20:16:27,553 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2022-12-13 20:16:27,554 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 82 flow [2022-12-13 20:16:27,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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) [2022-12-13 20:16:27,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:16:27,554 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:16:27,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:16:27,554 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 20:16:27,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:27,555 INFO L85 PathProgramCache]: Analyzing trace with hash -483706201, now seen corresponding path program 1 times [2022-12-13 20:16:27,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:16:27,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718715850] [2022-12-13 20:16:27,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:16:27,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:16:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:27,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:16:27,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:16:27,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718715850] [2022-12-13 20:16:27,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718715850] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:16:27,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:16:27,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:16:27,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111818391] [2022-12-13 20:16:27,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:16:27,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:16:27,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:16:27,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:16:27,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:16:27,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 156 [2022-12-13 20:16:27,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 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) [2022-12-13 20:16:27,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:16:27,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 156 [2022-12-13 20:16:27,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:16:27,791 INFO L130 PetriNetUnfolder]: 531/862 cut-off events. [2022-12-13 20:16:27,791 INFO L131 PetriNetUnfolder]: For 357/357 co-relation queries the response was YES. [2022-12-13 20:16:27,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2332 conditions, 862 events. 531/862 cut-off events. For 357/357 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3540 event pairs, 118 based on Foata normal form. 12/874 useless extension candidates. Maximal degree in co-relation 2320. Up to 364 conditions per place. [2022-12-13 20:16:27,796 INFO L137 encePairwiseOnDemand]: 149/156 looper letters, 25 selfloop transitions, 7 changer transitions 3/35 dead transitions. [2022-12-13 20:16:27,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 35 transitions, 196 flow [2022-12-13 20:16:27,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:16:27,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:16:27,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 341 transitions. [2022-12-13 20:16:27,799 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5464743589743589 [2022-12-13 20:16:27,799 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 341 transitions. [2022-12-13 20:16:27,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 341 transitions. [2022-12-13 20:16:27,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:16:27,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 341 transitions. [2022-12-13 20:16:27,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:16:27,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 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) [2022-12-13 20:16:27,804 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 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) [2022-12-13 20:16:27,804 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 82 flow. Second operand 4 states and 341 transitions. [2022-12-13 20:16:27,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 35 transitions, 196 flow [2022-12-13 20:16:27,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 35 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:16:27,807 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 112 flow [2022-12-13 20:16:27,808 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2022-12-13 20:16:27,808 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2022-12-13 20:16:27,808 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 112 flow [2022-12-13 20:16:27,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 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) [2022-12-13 20:16:27,809 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:16:27,809 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:16:27,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:16:27,809 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 20:16:27,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:27,810 INFO L85 PathProgramCache]: Analyzing trace with hash -2109989920, now seen corresponding path program 1 times [2022-12-13 20:16:27,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:16:27,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826168305] [2022-12-13 20:16:27,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:16:27,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:16:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:27,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:16:27,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:16:27,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826168305] [2022-12-13 20:16:27,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826168305] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:16:27,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:16:27,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:16:27,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272719011] [2022-12-13 20:16:27,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:16:27,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:16:27,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:16:27,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:16:27,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:16:27,922 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 156 [2022-12-13 20:16:27,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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) [2022-12-13 20:16:27,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:16:27,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 156 [2022-12-13 20:16:27,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:16:27,989 INFO L130 PetriNetUnfolder]: 368/633 cut-off events. [2022-12-13 20:16:27,990 INFO L131 PetriNetUnfolder]: For 618/618 co-relation queries the response was YES. [2022-12-13 20:16:27,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1777 conditions, 633 events. 368/633 cut-off events. For 618/618 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2883 event pairs, 172 based on Foata normal form. 12/614 useless extension candidates. Maximal degree in co-relation 1762. Up to 320 conditions per place. [2022-12-13 20:16:27,992 INFO L137 encePairwiseOnDemand]: 153/156 looper letters, 19 selfloop transitions, 3 changer transitions 1/28 dead transitions. [2022-12-13 20:16:27,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 174 flow [2022-12-13 20:16:27,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:16:27,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:16:27,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2022-12-13 20:16:27,994 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2022-12-13 20:16:27,994 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2022-12-13 20:16:27,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2022-12-13 20:16:27,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:16:27,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2022-12-13 20:16:27,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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) [2022-12-13 20:16:27,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 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) [2022-12-13 20:16:27,996 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 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) [2022-12-13 20:16:27,996 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 112 flow. Second operand 3 states and 273 transitions. [2022-12-13 20:16:27,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 174 flow [2022-12-13 20:16:27,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 171 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:16:27,998 INFO L231 Difference]: Finished difference. Result has 34 places, 23 transitions, 120 flow [2022-12-13 20:16:27,998 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2022-12-13 20:16:27,999 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2022-12-13 20:16:27,999 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 120 flow [2022-12-13 20:16:27,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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) [2022-12-13 20:16:27,999 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:16:27,999 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:16:27,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:16:28,000 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 20:16:28,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:28,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1010239576, now seen corresponding path program 1 times [2022-12-13 20:16:28,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:16:28,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294875500] [2022-12-13 20:16:28,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:16:28,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:16:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:28,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:16:28,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:16:28,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294875500] [2022-12-13 20:16:28,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294875500] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:16:28,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:16:28,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:16:28,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146612084] [2022-12-13 20:16:28,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:16:28,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:16:28,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:16:28,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:16:28,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:16:28,100 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 156 [2022-12-13 20:16:28,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 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) [2022-12-13 20:16:28,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:16:28,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 156 [2022-12-13 20:16:28,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:16:28,230 INFO L130 PetriNetUnfolder]: 655/1080 cut-off events. [2022-12-13 20:16:28,230 INFO L131 PetriNetUnfolder]: For 986/986 co-relation queries the response was YES. [2022-12-13 20:16:28,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3281 conditions, 1080 events. 655/1080 cut-off events. For 986/986 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5123 event pairs, 99 based on Foata normal form. 24/1104 useless extension candidates. Maximal degree in co-relation 3264. Up to 568 conditions per place. [2022-12-13 20:16:28,233 INFO L137 encePairwiseOnDemand]: 149/156 looper letters, 30 selfloop transitions, 9 changer transitions 13/52 dead transitions. [2022-12-13 20:16:28,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 52 transitions, 344 flow [2022-12-13 20:16:28,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:16:28,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 20:16:28,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 431 transitions. [2022-12-13 20:16:28,235 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5525641025641026 [2022-12-13 20:16:28,235 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 431 transitions. [2022-12-13 20:16:28,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 431 transitions. [2022-12-13 20:16:28,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:16:28,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 431 transitions. [2022-12-13 20:16:28,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 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) [2022-12-13 20:16:28,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 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) [2022-12-13 20:16:28,237 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 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) [2022-12-13 20:16:28,237 INFO L175 Difference]: Start difference. First operand has 34 places, 23 transitions, 120 flow. Second operand 5 states and 431 transitions. [2022-12-13 20:16:28,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 52 transitions, 344 flow [2022-12-13 20:16:28,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 52 transitions, 326 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-12-13 20:16:28,241 INFO L231 Difference]: Finished difference. Result has 37 places, 25 transitions, 150 flow [2022-12-13 20:16:28,241 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=150, PETRI_PLACES=37, PETRI_TRANSITIONS=25} [2022-12-13 20:16:28,241 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2022-12-13 20:16:28,242 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 25 transitions, 150 flow [2022-12-13 20:16:28,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 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) [2022-12-13 20:16:28,242 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:16:28,242 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:16:28,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:16:28,242 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 20:16:28,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:28,243 INFO L85 PathProgramCache]: Analyzing trace with hash -476698422, now seen corresponding path program 1 times [2022-12-13 20:16:28,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:16:28,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772131060] [2022-12-13 20:16:28,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:16:28,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:16:28,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:28,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:16:28,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:16:28,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772131060] [2022-12-13 20:16:28,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772131060] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:16:28,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:16:28,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:16:28,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26122325] [2022-12-13 20:16:28,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:16:28,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:16:28,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:16:28,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:16:28,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:16:28,341 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 156 [2022-12-13 20:16:28,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 25 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 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) [2022-12-13 20:16:28,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:16:28,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 156 [2022-12-13 20:16:28,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:16:28,501 INFO L130 PetriNetUnfolder]: 599/1020 cut-off events. [2022-12-13 20:16:28,502 INFO L131 PetriNetUnfolder]: For 1313/1313 co-relation queries the response was YES. [2022-12-13 20:16:28,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3140 conditions, 1020 events. 599/1020 cut-off events. For 1313/1313 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4917 event pairs, 103 based on Foata normal form. 24/1044 useless extension candidates. Maximal degree in co-relation 3122. Up to 296 conditions per place. [2022-12-13 20:16:28,504 INFO L137 encePairwiseOnDemand]: 149/156 looper letters, 30 selfloop transitions, 8 changer transitions 22/60 dead transitions. [2022-12-13 20:16:28,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 60 transitions, 407 flow [2022-12-13 20:16:28,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:16:28,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 20:16:28,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 596 transitions. [2022-12-13 20:16:28,506 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5457875457875457 [2022-12-13 20:16:28,506 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 596 transitions. [2022-12-13 20:16:28,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 596 transitions. [2022-12-13 20:16:28,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:16:28,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 596 transitions. [2022-12-13 20:16:28,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 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) [2022-12-13 20:16:28,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 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) [2022-12-13 20:16:28,509 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 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) [2022-12-13 20:16:28,509 INFO L175 Difference]: Start difference. First operand has 37 places, 25 transitions, 150 flow. Second operand 7 states and 596 transitions. [2022-12-13 20:16:28,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 60 transitions, 407 flow [2022-12-13 20:16:28,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 60 transitions, 372 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-12-13 20:16:28,512 INFO L231 Difference]: Finished difference. Result has 43 places, 23 transitions, 139 flow [2022-12-13 20:16:28,512 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=139, PETRI_PLACES=43, PETRI_TRANSITIONS=23} [2022-12-13 20:16:28,513 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2022-12-13 20:16:28,513 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 23 transitions, 139 flow [2022-12-13 20:16:28,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 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) [2022-12-13 20:16:28,513 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:16:28,513 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:16:28,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 20:16:28,513 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 20:16:28,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:28,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1836976111, now seen corresponding path program 1 times [2022-12-13 20:16:28,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:16:28,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712641147] [2022-12-13 20:16:28,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:16:28,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:16:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:28,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:16:28,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:16:28,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712641147] [2022-12-13 20:16:28,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712641147] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:16:28,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:16:28,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:16:28,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791333839] [2022-12-13 20:16:28,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:16:28,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:16:28,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:16:28,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:16:28,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:16:28,604 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 156 [2022-12-13 20:16:28,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 23 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:16:28,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:16:28,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 156 [2022-12-13 20:16:28,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:16:28,690 INFO L130 PetriNetUnfolder]: 273/498 cut-off events. [2022-12-13 20:16:28,691 INFO L131 PetriNetUnfolder]: For 697/697 co-relation queries the response was YES. [2022-12-13 20:16:28,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1463 conditions, 498 events. 273/498 cut-off events. For 697/697 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2072 event pairs, 92 based on Foata normal form. 16/514 useless extension candidates. Maximal degree in co-relation 1442. Up to 393 conditions per place. [2022-12-13 20:16:28,692 INFO L137 encePairwiseOnDemand]: 149/156 looper letters, 19 selfloop transitions, 4 changer transitions 19/42 dead transitions. [2022-12-13 20:16:28,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 286 flow [2022-12-13 20:16:28,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:16:28,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 20:16:28,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 414 transitions. [2022-12-13 20:16:28,693 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5307692307692308 [2022-12-13 20:16:28,693 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 414 transitions. [2022-12-13 20:16:28,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 414 transitions. [2022-12-13 20:16:28,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:16:28,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 414 transitions. [2022-12-13 20:16:28,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 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) [2022-12-13 20:16:28,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 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) [2022-12-13 20:16:28,695 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 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) [2022-12-13 20:16:28,696 INFO L175 Difference]: Start difference. First operand has 43 places, 23 transitions, 139 flow. Second operand 5 states and 414 transitions. [2022-12-13 20:16:28,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 286 flow [2022-12-13 20:16:28,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 260 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-12-13 20:16:28,697 INFO L231 Difference]: Finished difference. Result has 40 places, 17 transitions, 83 flow [2022-12-13 20:16:28,697 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=83, PETRI_PLACES=40, PETRI_TRANSITIONS=17} [2022-12-13 20:16:28,698 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2022-12-13 20:16:28,698 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 17 transitions, 83 flow [2022-12-13 20:16:28,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:16:28,698 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:16:28,698 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:16:28,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 20:16:28,698 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 20:16:28,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:28,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1989653537, now seen corresponding path program 1 times [2022-12-13 20:16:28,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:16:28,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179688236] [2022-12-13 20:16:28,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:16:28,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:16:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:28,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:16:28,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:16:28,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179688236] [2022-12-13 20:16:28,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179688236] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:16:28,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:16:28,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:16:28,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536964818] [2022-12-13 20:16:28,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:16:28,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:16:28,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:16:28,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:16:28,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:16:28,819 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 156 [2022-12-13 20:16:28,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 17 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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) [2022-12-13 20:16:28,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:16:28,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 156 [2022-12-13 20:16:28,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:16:28,850 INFO L130 PetriNetUnfolder]: 38/93 cut-off events. [2022-12-13 20:16:28,850 INFO L131 PetriNetUnfolder]: For 129/132 co-relation queries the response was YES. [2022-12-13 20:16:28,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 93 events. 38/93 cut-off events. For 129/132 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 278 event pairs, 12 based on Foata normal form. 5/96 useless extension candidates. Maximal degree in co-relation 267. Up to 73 conditions per place. [2022-12-13 20:16:28,851 INFO L137 encePairwiseOnDemand]: 151/156 looper letters, 17 selfloop transitions, 3 changer transitions 1/24 dead transitions. [2022-12-13 20:16:28,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 24 transitions, 154 flow [2022-12-13 20:16:28,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:16:28,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:16:28,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2022-12-13 20:16:28,852 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5726495726495726 [2022-12-13 20:16:28,852 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2022-12-13 20:16:28,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2022-12-13 20:16:28,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:16:28,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2022-12-13 20:16:28,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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) [2022-12-13 20:16:28,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 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) [2022-12-13 20:16:28,854 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 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) [2022-12-13 20:16:28,854 INFO L175 Difference]: Start difference. First operand has 40 places, 17 transitions, 83 flow. Second operand 3 states and 268 transitions. [2022-12-13 20:16:28,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 24 transitions, 154 flow [2022-12-13 20:16:28,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 24 transitions, 126 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-12-13 20:16:28,855 INFO L231 Difference]: Finished difference. Result has 33 places, 19 transitions, 83 flow [2022-12-13 20:16:28,855 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=33, PETRI_TRANSITIONS=19} [2022-12-13 20:16:28,855 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2022-12-13 20:16:28,855 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 19 transitions, 83 flow [2022-12-13 20:16:28,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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) [2022-12-13 20:16:28,856 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:16:28,856 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:16:28,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 20:16:28,856 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 20:16:28,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:28,856 INFO L85 PathProgramCache]: Analyzing trace with hash -765431588, now seen corresponding path program 1 times [2022-12-13 20:16:28,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:16:28,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603876233] [2022-12-13 20:16:28,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:16:28,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:16:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:28,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:16:28,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:16:28,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603876233] [2022-12-13 20:16:28,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603876233] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:16:28,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:16:28,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:16:28,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777918800] [2022-12-13 20:16:28,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:16:28,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:16:28,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:16:28,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:16:28,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:16:28,936 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 156 [2022-12-13 20:16:28,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 19 transitions, 83 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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) [2022-12-13 20:16:28,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:16:28,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 156 [2022-12-13 20:16:28,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:16:28,966 INFO L130 PetriNetUnfolder]: 17/56 cut-off events. [2022-12-13 20:16:28,967 INFO L131 PetriNetUnfolder]: For 24/29 co-relation queries the response was YES. [2022-12-13 20:16:28,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 56 events. 17/56 cut-off events. For 24/29 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 121 event pairs, 3 based on Foata normal form. 10/65 useless extension candidates. Maximal degree in co-relation 179. Up to 29 conditions per place. [2022-12-13 20:16:28,967 INFO L137 encePairwiseOnDemand]: 151/156 looper letters, 16 selfloop transitions, 5 changer transitions 3/27 dead transitions. [2022-12-13 20:16:28,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 27 transitions, 165 flow [2022-12-13 20:16:28,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:16:28,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:16:28,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 353 transitions. [2022-12-13 20:16:28,970 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5657051282051282 [2022-12-13 20:16:28,970 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 353 transitions. [2022-12-13 20:16:28,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 353 transitions. [2022-12-13 20:16:28,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:16:28,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 353 transitions. [2022-12-13 20:16:28,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 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) [2022-12-13 20:16:28,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 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) [2022-12-13 20:16:28,973 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 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) [2022-12-13 20:16:28,973 INFO L175 Difference]: Start difference. First operand has 33 places, 19 transitions, 83 flow. Second operand 4 states and 353 transitions. [2022-12-13 20:16:28,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 27 transitions, 165 flow [2022-12-13 20:16:28,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 27 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:16:28,974 INFO L231 Difference]: Finished difference. Result has 36 places, 19 transitions, 98 flow [2022-12-13 20:16:28,974 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=36, PETRI_TRANSITIONS=19} [2022-12-13 20:16:28,974 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2022-12-13 20:16:28,974 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 19 transitions, 98 flow [2022-12-13 20:16:28,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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) [2022-12-13 20:16:28,974 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:16:28,974 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:16:28,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 20:16:28,975 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 20:16:28,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:16:28,975 INFO L85 PathProgramCache]: Analyzing trace with hash 2041399923, now seen corresponding path program 1 times [2022-12-13 20:16:28,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:16:28,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889389762] [2022-12-13 20:16:28,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:16:28,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:16:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:16:29,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:16:29,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:16:29,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889389762] [2022-12-13 20:16:29,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889389762] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:16:29,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:16:29,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:16:29,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348736617] [2022-12-13 20:16:29,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:16:29,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:16:29,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:16:29,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:16:29,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:16:29,060 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 156 [2022-12-13 20:16:29,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 19 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 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) [2022-12-13 20:16:29,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:16:29,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 156 [2022-12-13 20:16:29,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:16:29,083 INFO L130 PetriNetUnfolder]: 11/39 cut-off events. [2022-12-13 20:16:29,083 INFO L131 PetriNetUnfolder]: For 61/67 co-relation queries the response was YES. [2022-12-13 20:16:29,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 39 events. 11/39 cut-off events. For 61/67 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 69 event pairs, 2 based on Foata normal form. 8/46 useless extension candidates. Maximal degree in co-relation 135. Up to 15 conditions per place. [2022-12-13 20:16:29,084 INFO L137 encePairwiseOnDemand]: 151/156 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2022-12-13 20:16:29,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 23 transitions, 152 flow [2022-12-13 20:16:29,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:16:29,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 20:16:29,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 431 transitions. [2022-12-13 20:16:29,086 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5525641025641026 [2022-12-13 20:16:29,086 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 431 transitions. [2022-12-13 20:16:29,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 431 transitions. [2022-12-13 20:16:29,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:16:29,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 431 transitions. [2022-12-13 20:16:29,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 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) [2022-12-13 20:16:29,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 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) [2022-12-13 20:16:29,089 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 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) [2022-12-13 20:16:29,089 INFO L175 Difference]: Start difference. First operand has 36 places, 19 transitions, 98 flow. Second operand 5 states and 431 transitions. [2022-12-13 20:16:29,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 23 transitions, 152 flow [2022-12-13 20:16:29,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 23 transitions, 129 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-12-13 20:16:29,090 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2022-12-13 20:16:29,090 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2022-12-13 20:16:29,091 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2022-12-13 20:16:29,091 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2022-12-13 20:16:29,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 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) [2022-12-13 20:16:29,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-13 20:16:29,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-13 20:16:29,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-13 20:16:29,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-13 20:16:29,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 20:16:29,095 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:16:29,098 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 20:16:29,098 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 20:16:29,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 08:16:29 BasicIcfg [2022-12-13 20:16:29,101 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 20:16:29,102 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 20:16:29,102 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 20:16:29,102 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 20:16:29,103 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:16:25" (3/4) ... [2022-12-13 20:16:29,105 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 20:16:29,112 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-12-13 20:16:29,112 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-12-13 20:16:29,112 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-12-13 20:16:29,116 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-12-13 20:16:29,116 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 20:16:29,116 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 20:16:29,116 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 20:16:29,147 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f24c568-747a-473a-93c2-42e34652c3a3/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 20:16:29,147 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 20:16:29,147 INFO L158 Benchmark]: Toolchain (without parser) took 4383.49ms. Allocated memory is still 142.6MB. Free memory was 108.1MB in the beginning and 66.0MB in the end (delta: 42.1MB). Peak memory consumption was 43.6MB. Max. memory is 16.1GB. [2022-12-13 20:16:29,148 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 113.2MB. Free memory is still 86.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:16:29,148 INFO L158 Benchmark]: CACSL2BoogieTranslator took 384.86ms. Allocated memory is still 142.6MB. Free memory was 108.1MB in the beginning and 84.5MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-12-13 20:16:29,148 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.52ms. Allocated memory is still 142.6MB. Free memory was 84.5MB in the beginning and 82.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:16:29,149 INFO L158 Benchmark]: Boogie Preprocessor took 15.21ms. Allocated memory is still 142.6MB. Free memory was 82.9MB in the beginning and 81.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:16:29,149 INFO L158 Benchmark]: RCFGBuilder took 262.91ms. Allocated memory is still 142.6MB. Free memory was 81.4MB in the beginning and 67.7MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 20:16:29,149 INFO L158 Benchmark]: TraceAbstraction took 3632.43ms. Allocated memory is still 142.6MB. Free memory was 67.2MB in the beginning and 68.2MB in the end (delta: -964.3kB). Peak memory consumption was 1.7MB. Max. memory is 16.1GB. [2022-12-13 20:16:29,149 INFO L158 Benchmark]: Witness Printer took 45.03ms. Allocated memory is still 142.6MB. Free memory was 68.2MB in the beginning and 66.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:16:29,151 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 113.2MB. Free memory is still 86.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 384.86ms. Allocated memory is still 142.6MB. Free memory was 108.1MB in the beginning and 84.5MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.52ms. Allocated memory is still 142.6MB. Free memory was 84.5MB in the beginning and 82.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.21ms. Allocated memory is still 142.6MB. Free memory was 82.9MB in the beginning and 81.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 262.91ms. Allocated memory is still 142.6MB. Free memory was 81.4MB in the beginning and 67.7MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3632.43ms. Allocated memory is still 142.6MB. Free memory was 67.2MB in the beginning and 68.2MB in the end (delta: -964.3kB). Peak memory consumption was 1.7MB. Max. memory is 16.1GB. * Witness Printer took 45.03ms. Allocated memory is still 142.6MB. Free memory was 68.2MB in the beginning and 66.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 84 PlacesBefore, 27 PlacesAfterwards, 75 TransitionsBefore, 18 TransitionsAfterwards, 1116 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 64 TotalNumberOfCompositions, 2345 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1193, independent: 1097, independent conditional: 0, independent unconditional: 1097, dependent: 96, dependent conditional: 0, dependent unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 616, independent: 590, independent conditional: 0, independent unconditional: 590, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1193, independent: 507, independent conditional: 0, independent unconditional: 507, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 616, unknown conditional: 0, unknown unconditional: 616] , Statistics on independence cache: Total cache size (in pairs): 54, Positive cache size: 42, Positive conditional cache size: 0, Positive unconditional cache size: 42, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 4 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: 3.5s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 278 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 193 mSDsluCounter, 81 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 73 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 408 IncrementalHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 73 mSolverCounterUnsat, 51 mSDtfsCounter, 408 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=150occurred in iteration=4, InterpolantAutomatonStates: 39, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 407 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 20:16:29,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f24c568-747a-473a-93c2-42e34652c3a3/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE