./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.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_76e09154-32c5-4ddf-8b6e-de7c17fe290b/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e09154-32c5-4ddf-8b6e-de7c17fe290b/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_76e09154-32c5-4ddf-8b6e-de7c17fe290b/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e09154-32c5-4ddf-8b6e-de7c17fe290b/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e09154-32c5-4ddf-8b6e-de7c17fe290b/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_76e09154-32c5-4ddf-8b6e-de7c17fe290b/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 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b --- 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 22:01:17,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:01:17,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:01:17,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:01:17,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:01:17,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:01:17,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:01:17,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:01:17,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:01:17,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:01:17,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:01:17,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:01:17,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:01:17,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:01:17,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:01:17,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:01:17,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:01:17,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:01:17,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:01:17,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:01:17,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:01:17,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:01:17,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:01:17,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:01:17,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:01:17,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:01:17,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:01:17,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:01:17,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:01:17,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:01:17,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:01:17,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:01:17,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:01:17,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:01:17,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:01:17,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:01:17,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:01:17,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:01:17,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:01:17,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:01:17,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:01:17,709 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e09154-32c5-4ddf-8b6e-de7c17fe290b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 22:01:17,730 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:01:17,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:01:17,730 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:01:17,730 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:01:17,735 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:01:17,735 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:01:17,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:01:17,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:01:17,736 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:01:17,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:01:17,737 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:01:17,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:01:17,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:01:17,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:01:17,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 22:01:17,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:01:17,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 22:01:17,738 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:01:17,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 22:01:17,738 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:01:17,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 22:01:17,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:01:17,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:01:17,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:01:17,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:01:17,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:01:17,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:01:17,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 22:01:17,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 22:01:17,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 22:01:17,740 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:01:17,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 22:01:17,740 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:01:17,740 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:01:17,741 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:01:17,741 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_76e09154-32c5-4ddf-8b6e-de7c17fe290b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e09154-32c5-4ddf-8b6e-de7c17fe290b/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b [2022-12-13 22:01:17,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:01:17,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:01:17,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:01:17,952 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:01:17,953 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:01:17,954 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e09154-32c5-4ddf-8b6e-de7c17fe290b/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2022-12-13 22:01:20,597 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:01:20,814 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:01:20,815 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e09154-32c5-4ddf-8b6e-de7c17fe290b/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2022-12-13 22:01:20,823 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e09154-32c5-4ddf-8b6e-de7c17fe290b/bin/uautomizer-uyxdKDjOR8/data/f8b43b773/1618daa94cfb4a0790521257c4712d56/FLAG01ac55cf3 [2022-12-13 22:01:20,833 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e09154-32c5-4ddf-8b6e-de7c17fe290b/bin/uautomizer-uyxdKDjOR8/data/f8b43b773/1618daa94cfb4a0790521257c4712d56 [2022-12-13 22:01:20,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:01:20,836 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:01:20,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:01:20,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:01:20,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:01:20,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:01:20" (1/1) ... [2022-12-13 22:01:20,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7906e808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:01:20, skipping insertion in model container [2022-12-13 22:01:20,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:01:20" (1/1) ... [2022-12-13 22:01:20,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:01:20,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:01:21,038 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 22:01:21,141 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:01:21,142 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:01:21,143 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:01:21,144 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:01:21,144 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:01:21,144 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:01:21,144 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:01:21,145 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:01:21,145 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:01:21,145 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:01:21,146 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e09154-32c5-4ddf-8b6e-de7c17fe290b/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i[31246,31259] [2022-12-13 22:01:21,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:01:21,162 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:01:21,173 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 22:01:21,187 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:01:21,187 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:01:21,187 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:01:21,188 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:01:21,188 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:01:21,188 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:01:21,188 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:01:21,188 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:01:21,189 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:01:21,189 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:01:21,189 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_76e09154-32c5-4ddf-8b6e-de7c17fe290b/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i[31246,31259] [2022-12-13 22:01:21,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:01:21,214 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:01:21,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:01:21 WrapperNode [2022-12-13 22:01:21,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:01:21,215 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:01:21,215 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:01:21,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:01:21,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:01:21" (1/1) ... [2022-12-13 22:01:21,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:01:21" (1/1) ... [2022-12-13 22:01:21,246 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 114 [2022-12-13 22:01:21,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:01:21,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:01:21,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:01:21,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:01:21,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:01:21" (1/1) ... [2022-12-13 22:01:21,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:01:21" (1/1) ... [2022-12-13 22:01:21,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:01:21" (1/1) ... [2022-12-13 22:01:21,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:01:21" (1/1) ... [2022-12-13 22:01:21,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:01:21" (1/1) ... [2022-12-13 22:01:21,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:01:21" (1/1) ... [2022-12-13 22:01:21,262 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:01:21" (1/1) ... [2022-12-13 22:01:21,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:01:21" (1/1) ... [2022-12-13 22:01:21,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:01:21,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:01:21,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:01:21,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:01:21,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:01:21" (1/1) ... [2022-12-13 22:01:21,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:01:21,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e09154-32c5-4ddf-8b6e-de7c17fe290b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:01:21,290 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e09154-32c5-4ddf-8b6e-de7c17fe290b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:01:21,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e09154-32c5-4ddf-8b6e-de7c17fe290b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:01:21,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 22:01:21,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 22:01:21,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 22:01:21,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:01:21,324 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2022-12-13 22:01:21,324 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2022-12-13 22:01:21,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 22:01:21,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 22:01:21,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 22:01:21,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 22:01:21,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:01:21,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:01:21,325 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2022-12-13 22:01:21,325 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2022-12-13 22:01:21,326 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 22:01:21,423 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:01:21,425 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:01:21,578 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:01:21,606 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:01:21,606 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 22:01:21,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:01:21 BoogieIcfgContainer [2022-12-13 22:01:21,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:01:21,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:01:21,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:01:21,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:01:21,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:01:20" (1/3) ... [2022-12-13 22:01:21,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a38bc5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:01:21, skipping insertion in model container [2022-12-13 22:01:21,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:01:21" (2/3) ... [2022-12-13 22:01:21,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a38bc5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:01:21, skipping insertion in model container [2022-12-13 22:01:21,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:01:21" (3/3) ... [2022-12-13 22:01:21,614 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2022-12-13 22:01:21,620 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 22:01:21,628 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:01:21,628 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 22:01:21,628 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 22:01:21,682 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 22:01:21,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 112 transitions, 256 flow [2022-12-13 22:01:21,761 INFO L130 PetriNetUnfolder]: 2/108 cut-off events. [2022-12-13 22:01:21,761 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 22:01:21,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 108 events. 2/108 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 90 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2022-12-13 22:01:21,766 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 112 transitions, 256 flow [2022-12-13 22:01:21,770 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 94 transitions, 209 flow [2022-12-13 22:01:21,774 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 22:01:21,783 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 94 transitions, 209 flow [2022-12-13 22:01:21,786 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 94 transitions, 209 flow [2022-12-13 22:01:21,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 94 transitions, 209 flow [2022-12-13 22:01:21,812 INFO L130 PetriNetUnfolder]: 2/94 cut-off events. [2022-12-13 22:01:21,812 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 22:01:21,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 94 events. 2/94 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 90 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2022-12-13 22:01:21,817 INFO L119 LiptonReduction]: Number of co-enabled transitions 2408 [2022-12-13 22:01:24,123 INFO L134 LiptonReduction]: Checked pairs total: 9083 [2022-12-13 22:01:24,123 INFO L136 LiptonReduction]: Total number of compositions: 66 [2022-12-13 22:01:24,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:01:24,138 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;@eaa17b3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:01:24,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 22:01:24,142 INFO L130 PetriNetUnfolder]: 1/20 cut-off events. [2022-12-13 22:01:24,142 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 22:01:24,142 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:01:24,143 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:01:24,143 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:01:24,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:01:24,147 INFO L85 PathProgramCache]: Analyzing trace with hash -758952939, now seen corresponding path program 1 times [2022-12-13 22:01:24,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:01:24,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140117204] [2022-12-13 22:01:24,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:01:24,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:01:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:01:24,393 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 22:01:24,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:01:24,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140117204] [2022-12-13 22:01:24,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140117204] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:01:24,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:01:24,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 22:01:24,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456878135] [2022-12-13 22:01:24,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:01:24,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:01:24,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:01:24,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:01:24,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:01:24,455 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 178 [2022-12-13 22:01:24,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 99 flow. Second operand has 5 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 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 22:01:24,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:01:24,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 178 [2022-12-13 22:01:24,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:01:25,721 INFO L130 PetriNetUnfolder]: 10545/15782 cut-off events. [2022-12-13 22:01:25,721 INFO L131 PetriNetUnfolder]: For 1542/1542 co-relation queries the response was YES. [2022-12-13 22:01:25,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31770 conditions, 15782 events. 10545/15782 cut-off events. For 1542/1542 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 101772 event pairs, 1711 based on Foata normal form. 308/15362 useless extension candidates. Maximal degree in co-relation 25018. Up to 6881 conditions per place. [2022-12-13 22:01:25,815 INFO L137 encePairwiseOnDemand]: 166/178 looper letters, 128 selfloop transitions, 22 changer transitions 1/154 dead transitions. [2022-12-13 22:01:25,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 154 transitions, 697 flow [2022-12-13 22:01:25,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 22:01:25,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 22:01:25,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 859 transitions. [2022-12-13 22:01:25,832 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6032303370786517 [2022-12-13 22:01:25,832 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 859 transitions. [2022-12-13 22:01:25,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 859 transitions. [2022-12-13 22:01:25,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:01:25,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 859 transitions. [2022-12-13 22:01:25,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 107.375) internal successors, (859), 8 states have internal predecessors, (859), 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 22:01:25,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 178.0) internal successors, (1602), 9 states have internal predecessors, (1602), 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 22:01:25,853 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 178.0) internal successors, (1602), 9 states have internal predecessors, (1602), 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 22:01:25,854 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 99 flow. Second operand 8 states and 859 transitions. [2022-12-13 22:01:25,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 154 transitions, 697 flow [2022-12-13 22:01:25,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 154 transitions, 645 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-13 22:01:25,880 INFO L231 Difference]: Finished difference. Result has 55 places, 56 transitions, 231 flow [2022-12-13 22:01:25,881 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=231, PETRI_PLACES=55, PETRI_TRANSITIONS=56} [2022-12-13 22:01:25,884 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 5 predicate places. [2022-12-13 22:01:25,885 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 56 transitions, 231 flow [2022-12-13 22:01:25,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 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 22:01:25,885 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:01:25,885 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:01:25,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 22:01:25,886 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:01:25,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:01:25,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1845906250, now seen corresponding path program 1 times [2022-12-13 22:01:25,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:01:25,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974457396] [2022-12-13 22:01:25,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:01:25,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:01:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:01:25,995 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 22:01:25,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:01:25,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974457396] [2022-12-13 22:01:25,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974457396] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:01:25,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:01:25,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:01:25,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996814920] [2022-12-13 22:01:25,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:01:25,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:01:25,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:01:25,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:01:25,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:01:26,001 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 178 [2022-12-13 22:01:26,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 56 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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 22:01:26,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:01:26,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 178 [2022-12-13 22:01:26,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:01:26,758 INFO L130 PetriNetUnfolder]: 4329/7445 cut-off events. [2022-12-13 22:01:26,758 INFO L131 PetriNetUnfolder]: For 3282/3688 co-relation queries the response was YES. [2022-12-13 22:01:26,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17604 conditions, 7445 events. 4329/7445 cut-off events. For 3282/3688 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 56736 event pairs, 1545 based on Foata normal form. 834/7498 useless extension candidates. Maximal degree in co-relation 10859. Up to 3244 conditions per place. [2022-12-13 22:01:26,824 INFO L137 encePairwiseOnDemand]: 172/178 looper letters, 44 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2022-12-13 22:01:26,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 75 transitions, 390 flow [2022-12-13 22:01:26,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:01:26,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:01:26,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2022-12-13 22:01:26,827 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6123595505617978 [2022-12-13 22:01:26,827 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 327 transitions. [2022-12-13 22:01:26,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 327 transitions. [2022-12-13 22:01:26,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:01:26,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 327 transitions. [2022-12-13 22:01:26,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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 22:01:26,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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 22:01:26,834 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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 22:01:26,834 INFO L175 Difference]: Start difference. First operand has 55 places, 56 transitions, 231 flow. Second operand 3 states and 327 transitions. [2022-12-13 22:01:26,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 75 transitions, 390 flow [2022-12-13 22:01:26,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 75 transitions, 390 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 22:01:26,861 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 247 flow [2022-12-13 22:01:26,862 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2022-12-13 22:01:26,863 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 8 predicate places. [2022-12-13 22:01:26,863 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 247 flow [2022-12-13 22:01:26,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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 22:01:26,864 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:01:26,864 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:01:26,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 22:01:26,864 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:01:26,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:01:26,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1328753810, now seen corresponding path program 2 times [2022-12-13 22:01:26,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:01:26,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469939293] [2022-12-13 22:01:26,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:01:26,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:01:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:01:26,954 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 22:01:26,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:01:26,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469939293] [2022-12-13 22:01:26,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469939293] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:01:26,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:01:26,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:01:26,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109030800] [2022-12-13 22:01:26,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:01:26,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:01:26,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:01:26,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:01:26,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:01:26,959 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 178 [2022-12-13 22:01:26,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 247 flow. Second operand has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 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 22:01:26,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:01:26,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 178 [2022-12-13 22:01:26,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:01:27,346 INFO L130 PetriNetUnfolder]: 1396/3035 cut-off events. [2022-12-13 22:01:27,346 INFO L131 PetriNetUnfolder]: For 3015/3129 co-relation queries the response was YES. [2022-12-13 22:01:27,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7942 conditions, 3035 events. 1396/3035 cut-off events. For 3015/3129 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 23975 event pairs, 443 based on Foata normal form. 281/3115 useless extension candidates. Maximal degree in co-relation 4836. Up to 1080 conditions per place. [2022-12-13 22:01:27,354 INFO L137 encePairwiseOnDemand]: 171/178 looper letters, 59 selfloop transitions, 9 changer transitions 7/100 dead transitions. [2022-12-13 22:01:27,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 100 transitions, 545 flow [2022-12-13 22:01:27,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:01:27,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 22:01:27,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 451 transitions. [2022-12-13 22:01:27,356 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6334269662921348 [2022-12-13 22:01:27,356 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 451 transitions. [2022-12-13 22:01:27,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 451 transitions. [2022-12-13 22:01:27,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:01:27,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 451 transitions. [2022-12-13 22:01:27,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 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 22:01:27,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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 22:01:27,358 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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 22:01:27,359 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 247 flow. Second operand 4 states and 451 transitions. [2022-12-13 22:01:27,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 100 transitions, 545 flow [2022-12-13 22:01:27,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 100 transitions, 529 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 22:01:27,365 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 290 flow [2022-12-13 22:01:27,366 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2022-12-13 22:01:27,366 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 12 predicate places. [2022-12-13 22:01:27,366 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 290 flow [2022-12-13 22:01:27,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 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 22:01:27,367 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:01:27,367 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:01:27,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 22:01:27,367 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:01:27,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:01:27,367 INFO L85 PathProgramCache]: Analyzing trace with hash 2059171070, now seen corresponding path program 1 times [2022-12-13 22:01:27,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:01:27,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205581125] [2022-12-13 22:01:27,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:01:27,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:01:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:01:27,414 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 22:01:27,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:01:27,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205581125] [2022-12-13 22:01:27,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205581125] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:01:27,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:01:27,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 22:01:27,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963647023] [2022-12-13 22:01:27,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:01:27,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:01:27,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:01:27,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:01:27,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:01:27,442 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 178 [2022-12-13 22:01:27,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 290 flow. Second operand has 5 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:01:27,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:01:27,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 178 [2022-12-13 22:01:27,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:01:27,959 INFO L130 PetriNetUnfolder]: 2588/4816 cut-off events. [2022-12-13 22:01:27,959 INFO L131 PetriNetUnfolder]: For 6481/6663 co-relation queries the response was YES. [2022-12-13 22:01:27,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14675 conditions, 4816 events. 2588/4816 cut-off events. For 6481/6663 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 33644 event pairs, 553 based on Foata normal form. 404/5117 useless extension candidates. Maximal degree in co-relation 10319. Up to 2214 conditions per place. [2022-12-13 22:01:27,981 INFO L137 encePairwiseOnDemand]: 170/178 looper letters, 118 selfloop transitions, 33 changer transitions 17/173 dead transitions. [2022-12-13 22:01:27,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 173 transitions, 1158 flow [2022-12-13 22:01:27,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:01:27,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:01:27,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 735 transitions. [2022-12-13 22:01:27,985 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5898876404494382 [2022-12-13 22:01:27,985 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 735 transitions. [2022-12-13 22:01:27,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 735 transitions. [2022-12-13 22:01:27,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:01:27,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 735 transitions. [2022-12-13 22:01:27,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 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 22:01:27,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 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 22:01:27,994 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 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 22:01:27,995 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 290 flow. Second operand 7 states and 735 transitions. [2022-12-13 22:01:27,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 173 transitions, 1158 flow [2022-12-13 22:01:28,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 173 transitions, 1158 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 22:01:28,013 INFO L231 Difference]: Finished difference. Result has 71 places, 82 transitions, 540 flow [2022-12-13 22:01:28,013 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=540, PETRI_PLACES=71, PETRI_TRANSITIONS=82} [2022-12-13 22:01:28,013 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 21 predicate places. [2022-12-13 22:01:28,014 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 82 transitions, 540 flow [2022-12-13 22:01:28,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:01:28,014 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:01:28,015 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:01:28,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 22:01:28,015 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:01:28,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:01:28,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1760401169, now seen corresponding path program 1 times [2022-12-13 22:01:28,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:01:28,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912110206] [2022-12-13 22:01:28,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:01:28,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:01:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:01:28,069 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 22:01:28,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:01:28,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912110206] [2022-12-13 22:01:28,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912110206] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:01:28,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:01:28,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 22:01:28,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482184096] [2022-12-13 22:01:28,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:01:28,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:01:28,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:01:28,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:01:28,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:01:28,094 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 178 [2022-12-13 22:01:28,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 82 transitions, 540 flow. Second operand has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 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 22:01:28,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:01:28,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 178 [2022-12-13 22:01:28,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:01:28,655 INFO L130 PetriNetUnfolder]: 2073/4111 cut-off events. [2022-12-13 22:01:28,655 INFO L131 PetriNetUnfolder]: For 7766/7822 co-relation queries the response was YES. [2022-12-13 22:01:28,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14243 conditions, 4111 events. 2073/4111 cut-off events. For 7766/7822 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 29469 event pairs, 323 based on Foata normal form. 90/4174 useless extension candidates. Maximal degree in co-relation 12044. Up to 1639 conditions per place. [2022-12-13 22:01:28,677 INFO L137 encePairwiseOnDemand]: 169/178 looper letters, 115 selfloop transitions, 48 changer transitions 13/181 dead transitions. [2022-12-13 22:01:28,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 181 transitions, 1359 flow [2022-12-13 22:01:28,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 22:01:28,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 22:01:28,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 830 transitions. [2022-12-13 22:01:28,679 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5828651685393258 [2022-12-13 22:01:28,680 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 830 transitions. [2022-12-13 22:01:28,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 830 transitions. [2022-12-13 22:01:28,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:01:28,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 830 transitions. [2022-12-13 22:01:28,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 103.75) internal successors, (830), 8 states have internal predecessors, (830), 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 22:01:28,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 178.0) internal successors, (1602), 9 states have internal predecessors, (1602), 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 22:01:28,684 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 178.0) internal successors, (1602), 9 states have internal predecessors, (1602), 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 22:01:28,684 INFO L175 Difference]: Start difference. First operand has 71 places, 82 transitions, 540 flow. Second operand 8 states and 830 transitions. [2022-12-13 22:01:28,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 181 transitions, 1359 flow [2022-12-13 22:01:28,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 181 transitions, 1341 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-12-13 22:01:28,705 INFO L231 Difference]: Finished difference. Result has 80 places, 97 transitions, 785 flow [2022-12-13 22:01:28,705 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=785, PETRI_PLACES=80, PETRI_TRANSITIONS=97} [2022-12-13 22:01:28,706 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 30 predicate places. [2022-12-13 22:01:28,706 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 97 transitions, 785 flow [2022-12-13 22:01:28,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 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 22:01:28,706 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:01:28,706 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:01:28,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 22:01:28,706 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:01:28,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:01:28,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1177435079, now seen corresponding path program 1 times [2022-12-13 22:01:28,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:01:28,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93980815] [2022-12-13 22:01:28,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:01:28,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:01:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:01:28,761 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 22:01:28,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:01:28,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93980815] [2022-12-13 22:01:28,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93980815] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:01:28,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:01:28,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 22:01:28,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277095262] [2022-12-13 22:01:28,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:01:28,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:01:28,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:01:28,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:01:28,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:01:28,802 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 178 [2022-12-13 22:01:28,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 97 transitions, 785 flow. Second operand has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 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 22:01:28,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:01:28,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 178 [2022-12-13 22:01:28,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:01:29,356 INFO L130 PetriNetUnfolder]: 2001/3966 cut-off events. [2022-12-13 22:01:29,356 INFO L131 PetriNetUnfolder]: For 11065/11206 co-relation queries the response was YES. [2022-12-13 22:01:29,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14713 conditions, 3966 events. 2001/3966 cut-off events. For 11065/11206 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 28371 event pairs, 355 based on Foata normal form. 189/4114 useless extension candidates. Maximal degree in co-relation 13182. Up to 1800 conditions per place. [2022-12-13 22:01:29,374 INFO L137 encePairwiseOnDemand]: 170/178 looper letters, 107 selfloop transitions, 46 changer transitions 6/166 dead transitions. [2022-12-13 22:01:29,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 166 transitions, 1405 flow [2022-12-13 22:01:29,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 22:01:29,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 22:01:29,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 630 transitions. [2022-12-13 22:01:29,377 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5898876404494382 [2022-12-13 22:01:29,377 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 630 transitions. [2022-12-13 22:01:29,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 630 transitions. [2022-12-13 22:01:29,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:01:29,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 630 transitions. [2022-12-13 22:01:29,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 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 22:01:29,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 178.0) internal successors, (1246), 7 states have internal predecessors, (1246), 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 22:01:29,381 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 178.0) internal successors, (1246), 7 states have internal predecessors, (1246), 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 22:01:29,381 INFO L175 Difference]: Start difference. First operand has 80 places, 97 transitions, 785 flow. Second operand 6 states and 630 transitions. [2022-12-13 22:01:29,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 166 transitions, 1405 flow [2022-12-13 22:01:29,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 166 transitions, 1396 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 22:01:29,412 INFO L231 Difference]: Finished difference. Result has 86 places, 100 transitions, 928 flow [2022-12-13 22:01:29,412 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=928, PETRI_PLACES=86, PETRI_TRANSITIONS=100} [2022-12-13 22:01:29,412 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 36 predicate places. [2022-12-13 22:01:29,412 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 100 transitions, 928 flow [2022-12-13 22:01:29,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 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 22:01:29,413 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:01:29,413 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:01:29,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 22:01:29,413 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:01:29,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:01:29,414 INFO L85 PathProgramCache]: Analyzing trace with hash -164824449, now seen corresponding path program 1 times [2022-12-13 22:01:29,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:01:29,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570872117] [2022-12-13 22:01:29,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:01:29,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:01:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:01:29,529 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 22:01:29,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:01:29,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570872117] [2022-12-13 22:01:29,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570872117] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:01:29,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:01:29,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 22:01:29,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126821552] [2022-12-13 22:01:29,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:01:29,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:01:29,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:01:29,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:01:29,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:01:29,536 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 178 [2022-12-13 22:01:29,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 100 transitions, 928 flow. Second operand has 6 states, 6 states have (on average 94.33333333333333) internal successors, (566), 6 states have internal predecessors, (566), 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 22:01:29,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:01:29,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 178 [2022-12-13 22:01:29,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:01:29,941 INFO L130 PetriNetUnfolder]: 931/2580 cut-off events. [2022-12-13 22:01:29,942 INFO L131 PetriNetUnfolder]: For 7686/7851 co-relation queries the response was YES. [2022-12-13 22:01:29,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9643 conditions, 2580 events. 931/2580 cut-off events. For 7686/7851 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 22031 event pairs, 124 based on Foata normal form. 227/2780 useless extension candidates. Maximal degree in co-relation 9081. Up to 440 conditions per place. [2022-12-13 22:01:29,949 INFO L137 encePairwiseOnDemand]: 169/178 looper letters, 48 selfloop transitions, 11 changer transitions 33/140 dead transitions. [2022-12-13 22:01:29,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 140 transitions, 1148 flow [2022-12-13 22:01:29,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 22:01:29,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 22:01:29,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 630 transitions. [2022-12-13 22:01:29,951 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5898876404494382 [2022-12-13 22:01:29,951 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 630 transitions. [2022-12-13 22:01:29,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 630 transitions. [2022-12-13 22:01:29,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:01:29,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 630 transitions. [2022-12-13 22:01:29,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 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 22:01:29,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 178.0) internal successors, (1246), 7 states have internal predecessors, (1246), 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 22:01:29,954 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 178.0) internal successors, (1246), 7 states have internal predecessors, (1246), 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 22:01:29,954 INFO L175 Difference]: Start difference. First operand has 86 places, 100 transitions, 928 flow. Second operand 6 states and 630 transitions. [2022-12-13 22:01:29,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 140 transitions, 1148 flow [2022-12-13 22:01:29,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 140 transitions, 1100 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 22:01:29,976 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 638 flow [2022-12-13 22:01:29,976 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=638, PETRI_PLACES=89, PETRI_TRANSITIONS=78} [2022-12-13 22:01:29,977 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 39 predicate places. [2022-12-13 22:01:29,977 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 638 flow [2022-12-13 22:01:29,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 94.33333333333333) internal successors, (566), 6 states have internal predecessors, (566), 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 22:01:29,977 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:01:29,977 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:01:29,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 22:01:29,978 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:01:29,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:01:29,978 INFO L85 PathProgramCache]: Analyzing trace with hash -959994747, now seen corresponding path program 2 times [2022-12-13 22:01:29,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:01:29,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821850951] [2022-12-13 22:01:29,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:01:29,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:01:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:01:30,076 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 22:01:30,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:01:30,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821850951] [2022-12-13 22:01:30,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821850951] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:01:30,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:01:30,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 22:01:30,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936530430] [2022-12-13 22:01:30,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:01:30,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:01:30,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:01:30,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:01:30,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:01:30,080 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 178 [2022-12-13 22:01:30,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 638 flow. Second operand has 5 states, 5 states have (on average 97.8) internal successors, (489), 5 states have internal predecessors, (489), 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 22:01:30,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:01:30,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 178 [2022-12-13 22:01:30,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:01:30,236 INFO L130 PetriNetUnfolder]: 277/982 cut-off events. [2022-12-13 22:01:30,236 INFO L131 PetriNetUnfolder]: For 3165/3165 co-relation queries the response was YES. [2022-12-13 22:01:30,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3780 conditions, 982 events. 277/982 cut-off events. For 3165/3165 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6859 event pairs, 100 based on Foata normal form. 22/994 useless extension candidates. Maximal degree in co-relation 3755. Up to 279 conditions per place. [2022-12-13 22:01:30,239 INFO L137 encePairwiseOnDemand]: 171/178 looper letters, 0 selfloop transitions, 0 changer transitions 72/72 dead transitions. [2022-12-13 22:01:30,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 72 transitions, 502 flow [2022-12-13 22:01:30,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:01:30,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 22:01:30,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 527 transitions. [2022-12-13 22:01:30,240 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5921348314606741 [2022-12-13 22:01:30,240 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 527 transitions. [2022-12-13 22:01:30,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 527 transitions. [2022-12-13 22:01:30,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:01:30,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 527 transitions. [2022-12-13 22:01:30,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 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 22:01:30,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 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 22:01:30,242 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 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 22:01:30,242 INFO L175 Difference]: Start difference. First operand has 89 places, 78 transitions, 638 flow. Second operand 5 states and 527 transitions. [2022-12-13 22:01:30,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 72 transitions, 502 flow [2022-12-13 22:01:30,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 72 transitions, 384 flow, removed 10 selfloop flow, removed 23 redundant places. [2022-12-13 22:01:30,250 INFO L231 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2022-12-13 22:01:30,251 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2022-12-13 22:01:30,251 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 16 predicate places. [2022-12-13 22:01:30,251 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow [2022-12-13 22:01:30,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.8) internal successors, (489), 5 states have internal predecessors, (489), 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 22:01:30,253 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-12-13 22:01:30,253 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2022-12-13 22:01:30,254 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-12-13 22:01:30,254 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-12-13 22:01:30,254 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-12-13 22:01:30,254 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-12-13 22:01:30,254 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-12-13 22:01:30,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 22:01:30,255 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2022-12-13 22:01:30,259 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 22:01:30,259 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 22:01:30,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 10:01:30 BasicIcfg [2022-12-13 22:01:30,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 22:01:30,262 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 22:01:30,262 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 22:01:30,262 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 22:01:30,262 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:01:21" (3/4) ... [2022-12-13 22:01:30,264 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 22:01:30,268 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2022-12-13 22:01:30,268 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2022-12-13 22:01:30,271 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-12-13 22:01:30,271 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 22:01:30,271 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 22:01:30,271 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 22:01:30,291 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e09154-32c5-4ddf-8b6e-de7c17fe290b/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 22:01:30,291 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 22:01:30,292 INFO L158 Benchmark]: Toolchain (without parser) took 9455.75ms. Allocated memory was 132.1MB in the beginning and 775.9MB in the end (delta: 643.8MB). Free memory was 97.9MB in the beginning and 501.5MB in the end (delta: -403.6MB). Peak memory consumption was 243.0MB. Max. memory is 16.1GB. [2022-12-13 22:01:30,292 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 132.1MB. Free memory is still 100.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 22:01:30,292 INFO L158 Benchmark]: CACSL2BoogieTranslator took 377.33ms. Allocated memory is still 132.1MB. Free memory was 97.9MB in the beginning and 76.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-13 22:01:30,293 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.17ms. Allocated memory is still 132.1MB. Free memory was 76.9MB in the beginning and 74.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 22:01:30,293 INFO L158 Benchmark]: Boogie Preprocessor took 18.38ms. Allocated memory is still 132.1MB. Free memory was 74.9MB in the beginning and 73.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 22:01:30,293 INFO L158 Benchmark]: RCFGBuilder took 342.52ms. Allocated memory is still 132.1MB. Free memory was 73.2MB in the beginning and 56.9MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 22:01:30,293 INFO L158 Benchmark]: TraceAbstraction took 8652.11ms. Allocated memory was 132.1MB in the beginning and 775.9MB in the end (delta: 643.8MB). Free memory was 56.0MB in the beginning and 503.6MB in the end (delta: -447.6MB). Peak memory consumption was 199.0MB. Max. memory is 16.1GB. [2022-12-13 22:01:30,294 INFO L158 Benchmark]: Witness Printer took 29.62ms. Allocated memory is still 775.9MB. Free memory was 503.6MB in the beginning and 501.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 22:01:30,296 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 132.1MB. Free memory is still 100.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 377.33ms. Allocated memory is still 132.1MB. Free memory was 97.9MB in the beginning and 76.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.17ms. Allocated memory is still 132.1MB. Free memory was 76.9MB in the beginning and 74.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.38ms. Allocated memory is still 132.1MB. Free memory was 74.9MB in the beginning and 73.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 342.52ms. Allocated memory is still 132.1MB. Free memory was 73.2MB in the beginning and 56.9MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 8652.11ms. Allocated memory was 132.1MB in the beginning and 775.9MB in the end (delta: 643.8MB). Free memory was 56.0MB in the beginning and 503.6MB in the end (delta: -447.6MB). Peak memory consumption was 199.0MB. Max. memory is 16.1GB. * Witness Printer took 29.62ms. Allocated memory is still 775.9MB. Free memory was 503.6MB in the beginning and 501.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 105 PlacesBefore, 50 PlacesAfterwards, 94 TransitionsBefore, 39 TransitionsAfterwards, 2408 CoEnabledTransitionPairs, 6 FixpointIterations, 22 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 66 TotalNumberOfCompositions, 9083 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4071, independent: 3816, independent conditional: 0, independent unconditional: 3816, dependent: 255, dependent conditional: 0, dependent unconditional: 255, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1316, independent: 1282, independent conditional: 0, independent unconditional: 1282, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4071, independent: 2534, independent conditional: 0, independent unconditional: 2534, dependent: 221, dependent conditional: 0, dependent unconditional: 221, unknown: 1316, unknown conditional: 0, unknown unconditional: 1316] , Statistics on independence cache: Total cache size (in pairs): 229, Positive cache size: 208, Positive conditional cache size: 0, Positive unconditional cache size: 208, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 739]: 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, 136 locations, 7 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: 8.6s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 662 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 593 mSDsluCounter, 123 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 85 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1572 IncrementalHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 38 mSDtfsCounter, 1572 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=928occurred in iteration=6, InterpolantAutomatonStates: 47, 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, 0.6s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 218 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 22:01:30,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e09154-32c5-4ddf-8b6e-de7c17fe290b/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