./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c --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_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/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_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/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_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/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 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 --- 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 11:56:05,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:56:05,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:56:05,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:56:05,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:56:05,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:56:05,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:56:05,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:56:05,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:56:05,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:56:05,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:56:05,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:56:05,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:56:05,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:56:05,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:56:05,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:56:05,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:56:05,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:56:05,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:56:05,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:56:05,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:56:05,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:56:05,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:56:05,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:56:05,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:56:05,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:56:05,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:56:05,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:56:05,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:56:05,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:56:05,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:56:05,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:56:05,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:56:05,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:56:05,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:56:05,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:56:05,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:56:05,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:56:05,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:56:05,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:56:05,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:56:05,803 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 11:56:05,817 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:56:05,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:56:05,817 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:56:05,818 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:56:05,818 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:56:05,818 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:56:05,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:56:05,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:56:05,819 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:56:05,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:56:05,819 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:56:05,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:56:05,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:56:05,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:56:05,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:56:05,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:56:05,819 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:56:05,820 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:56:05,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:56:05,820 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:56:05,820 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:56:05,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:56:05,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:56:05,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:56:05,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:56:05,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:56:05,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:56:05,821 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:56:05,821 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:56:05,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:56:05,821 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:56:05,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:56:05,821 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:56:05,821 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:56:05,821 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:56:05,821 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_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 [2022-12-13 11:56:05,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:56:05,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:56:05,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:56:05,998 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:56:05,998 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:56:06,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2022-12-13 11:56:08,637 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:56:08,768 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:56:08,769 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2022-12-13 11:56:08,775 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/data/638a65a96/fd46bd4931d84b2592aea9c73da6fbbc/FLAG07afd87b9 [2022-12-13 11:56:08,786 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/data/638a65a96/fd46bd4931d84b2592aea9c73da6fbbc [2022-12-13 11:56:08,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:56:08,789 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:56:08,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:56:08,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:56:08,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:56:08,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:56:08" (1/1) ... [2022-12-13 11:56:08,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72fb3acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:56:08, skipping insertion in model container [2022-12-13 11:56:08,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:56:08" (1/1) ... [2022-12-13 11:56:08,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:56:08,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:56:08,927 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:56:08,928 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:56:08,928 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:56:08,929 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:56:08,932 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:56:08,932 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:56:08,932 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:56:08,933 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:56:08,938 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c[2410,2423] [2022-12-13 11:56:08,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:56:08,948 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:56:08,957 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:56:08,958 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:56:08,958 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:56:08,958 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:56:08,959 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:56:08,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:56:08,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:56:08,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:56:08,964 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_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c[2410,2423] [2022-12-13 11:56:08,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:56:08,974 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:56:08,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:56:08 WrapperNode [2022-12-13 11:56:08,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:56:08,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:56:08,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:56:08,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:56:08,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:56:08" (1/1) ... [2022-12-13 11:56:08,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:56:08" (1/1) ... [2022-12-13 11:56:08,999 INFO L138 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2022-12-13 11:56:08,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:56:09,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:56:09,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:56:09,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:56:09,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:56:08" (1/1) ... [2022-12-13 11:56:09,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:56:08" (1/1) ... [2022-12-13 11:56:09,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:56:08" (1/1) ... [2022-12-13 11:56:09,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:56:08" (1/1) ... [2022-12-13 11:56:09,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:56:08" (1/1) ... [2022-12-13 11:56:09,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:56:08" (1/1) ... [2022-12-13 11:56:09,017 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:56:08" (1/1) ... [2022-12-13 11:56:09,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:56:08" (1/1) ... [2022-12-13 11:56:09,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:56:09,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:56:09,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:56:09,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:56:09,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:56:08" (1/1) ... [2022-12-13 11:56:09,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:56:09,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:56:09,043 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:56:09,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:56:09,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:56:09,077 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 11:56:09,077 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 11:56:09,077 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 11:56:09,077 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 11:56:09,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:56:09,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:56:09,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:56:09,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 11:56:09,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 11:56:09,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:56:09,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:56:09,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 11:56:09,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:56:09,079 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 11:56:09,149 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:56:09,151 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:56:09,289 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:56:09,311 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:56:09,311 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 11:56:09,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:56:09 BoogieIcfgContainer [2022-12-13 11:56:09,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:56:09,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:56:09,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:56:09,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:56:09,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:56:08" (1/3) ... [2022-12-13 11:56:09,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39190b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:56:09, skipping insertion in model container [2022-12-13 11:56:09,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:56:08" (2/3) ... [2022-12-13 11:56:09,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39190b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:56:09, skipping insertion in model container [2022-12-13 11:56:09,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:56:09" (3/3) ... [2022-12-13 11:56:09,320 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2022-12-13 11:56:09,326 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 11:56:09,334 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:56:09,335 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 11:56:09,335 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:56:09,384 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 11:56:09,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 95 transitions, 206 flow [2022-12-13 11:56:09,461 INFO L130 PetriNetUnfolder]: 11/93 cut-off events. [2022-12-13 11:56:09,461 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 11:56:09,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 93 events. 11/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2022-12-13 11:56:09,466 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 95 transitions, 206 flow [2022-12-13 11:56:09,471 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 84 transitions, 180 flow [2022-12-13 11:56:09,474 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:56:09,485 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 84 transitions, 180 flow [2022-12-13 11:56:09,487 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 84 transitions, 180 flow [2022-12-13 11:56:09,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 84 transitions, 180 flow [2022-12-13 11:56:09,512 INFO L130 PetriNetUnfolder]: 11/84 cut-off events. [2022-12-13 11:56:09,512 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 11:56:09,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 11/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 89 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2022-12-13 11:56:09,515 INFO L119 LiptonReduction]: Number of co-enabled transitions 1088 [2022-12-13 11:56:11,820 INFO L134 LiptonReduction]: Checked pairs total: 1084 [2022-12-13 11:56:11,820 INFO L136 LiptonReduction]: Total number of compositions: 84 [2022-12-13 11:56:11,832 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:56:11,837 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;@2dd1294, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:56:11,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-13 11:56:11,842 INFO L130 PetriNetUnfolder]: 2/12 cut-off events. [2022-12-13 11:56:11,842 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 11:56:11,842 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:11,842 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:11,843 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 11:56:11,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:11,847 INFO L85 PathProgramCache]: Analyzing trace with hash -502966447, now seen corresponding path program 1 times [2022-12-13 11:56:11,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:11,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228930535] [2022-12-13 11:56:11,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:11,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:12,042 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 11:56:12,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:12,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228930535] [2022-12-13 11:56:12,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228930535] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:56:12,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:56:12,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:56:12,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514048986] [2022-12-13 11:56:12,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:56:12,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:56:12,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:12,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:56:12,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:56:12,078 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 179 [2022-12-13 11:56:12,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 11:56:12,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:12,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 179 [2022-12-13 11:56:12,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:12,121 INFO L130 PetriNetUnfolder]: 29/54 cut-off events. [2022-12-13 11:56:12,121 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 11:56:12,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 54 events. 29/54 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 1 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 90. Up to 45 conditions per place. [2022-12-13 11:56:12,123 INFO L137 encePairwiseOnDemand]: 176/179 looper letters, 17 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2022-12-13 11:56:12,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 19 transitions, 91 flow [2022-12-13 11:56:12,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:56:12,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:56:12,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2022-12-13 11:56:12,133 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4897579143389199 [2022-12-13 11:56:12,133 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2022-12-13 11:56:12,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2022-12-13 11:56:12,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:56:12,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2022-12-13 11:56:12,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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 11:56:12,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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 11:56:12,144 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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 11:56:12,146 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 38 flow. Second operand 3 states and 263 transitions. [2022-12-13 11:56:12,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 19 transitions, 91 flow [2022-12-13 11:56:12,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 19 transitions, 81 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 11:56:12,149 INFO L231 Difference]: Finished difference. Result has 17 places, 14 transitions, 42 flow [2022-12-13 11:56:12,151 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=17, PETRI_TRANSITIONS=14} [2022-12-13 11:56:12,153 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, -1 predicate places. [2022-12-13 11:56:12,154 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 14 transitions, 42 flow [2022-12-13 11:56:12,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 11:56:12,154 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:12,154 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:12,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:56:12,155 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 11:56:12,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:12,156 INFO L85 PathProgramCache]: Analyzing trace with hash -673936455, now seen corresponding path program 1 times [2022-12-13 11:56:12,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:12,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38780726] [2022-12-13 11:56:12,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:12,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:12,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:56:12,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:12,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38780726] [2022-12-13 11:56:12,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38780726] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:56:12,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:56:12,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:56:12,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224009610] [2022-12-13 11:56:12,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:56:12,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:56:12,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:12,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:56:12,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:56:12,272 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 179 [2022-12-13 11:56:12,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 14 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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 11:56:12,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:12,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 179 [2022-12-13 11:56:12,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:12,311 INFO L130 PetriNetUnfolder]: 40/73 cut-off events. [2022-12-13 11:56:12,311 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 11:56:12,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 73 events. 40/73 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 131 event pairs, 6 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 122. Up to 49 conditions per place. [2022-12-13 11:56:12,312 INFO L137 encePairwiseOnDemand]: 176/179 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2022-12-13 11:56:12,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 21 transitions, 106 flow [2022-12-13 11:56:12,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:56:12,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:56:12,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2022-12-13 11:56:12,314 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4897579143389199 [2022-12-13 11:56:12,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2022-12-13 11:56:12,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2022-12-13 11:56:12,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:56:12,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2022-12-13 11:56:12,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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 11:56:12,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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 11:56:12,318 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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 11:56:12,319 INFO L175 Difference]: Start difference. First operand has 17 places, 14 transitions, 42 flow. Second operand 3 states and 263 transitions. [2022-12-13 11:56:12,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 21 transitions, 106 flow [2022-12-13 11:56:12,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 21 transitions, 103 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:56:12,320 INFO L231 Difference]: Finished difference. Result has 19 places, 15 transitions, 52 flow [2022-12-13 11:56:12,320 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=19, PETRI_TRANSITIONS=15} [2022-12-13 11:56:12,320 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places. [2022-12-13 11:56:12,320 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 15 transitions, 52 flow [2022-12-13 11:56:12,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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 11:56:12,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:12,321 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:12,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:56:12,321 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 11:56:12,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:12,322 INFO L85 PathProgramCache]: Analyzing trace with hash -789519264, now seen corresponding path program 1 times [2022-12-13 11:56:12,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:12,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808643059] [2022-12-13 11:56:12,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:12,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:12,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:56:12,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:12,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808643059] [2022-12-13 11:56:12,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808643059] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:56:12,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485533587] [2022-12-13 11:56:12,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:12,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:12,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:56:12,573 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:56:12,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:56:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:12,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 11:56:12,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:12,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:56:12,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:12,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:56:12,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485533587] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:12,928 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:56:12,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-12-13 11:56:12,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723703971] [2022-12-13 11:56:12,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:12,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 11:56:12,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:12,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 11:56:12,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:56:12,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 179 [2022-12-13 11:56:12,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 52 flow. Second operand has 8 states, 8 states have (on average 68.375) internal successors, (547), 8 states have internal predecessors, (547), 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 11:56:12,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:12,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 179 [2022-12-13 11:56:12,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:13,116 INFO L130 PetriNetUnfolder]: 65/116 cut-off events. [2022-12-13 11:56:13,116 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-12-13 11:56:13,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 116 events. 65/116 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 264 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 100. Up to 41 conditions per place. [2022-12-13 11:56:13,117 INFO L137 encePairwiseOnDemand]: 174/179 looper letters, 40 selfloop transitions, 18 changer transitions 0/58 dead transitions. [2022-12-13 11:56:13,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 58 transitions, 305 flow [2022-12-13 11:56:13,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 11:56:13,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 11:56:13,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 897 transitions. [2022-12-13 11:56:13,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3854748603351955 [2022-12-13 11:56:13,120 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 897 transitions. [2022-12-13 11:56:13,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 897 transitions. [2022-12-13 11:56:13,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:56:13,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 897 transitions. [2022-12-13 11:56:13,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.0) internal successors, (897), 13 states have internal predecessors, (897), 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 11:56:13,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 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 11:56:13,127 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 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 11:56:13,127 INFO L175 Difference]: Start difference. First operand has 19 places, 15 transitions, 52 flow. Second operand 13 states and 897 transitions. [2022-12-13 11:56:13,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 58 transitions, 305 flow [2022-12-13 11:56:13,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 58 transitions, 301 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:56:13,133 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 184 flow [2022-12-13 11:56:13,133 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=184, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2022-12-13 11:56:13,134 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 18 predicate places. [2022-12-13 11:56:13,134 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 184 flow [2022-12-13 11:56:13,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 68.375) internal successors, (547), 8 states have internal predecessors, (547), 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 11:56:13,134 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:13,134 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:13,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:56:13,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-13 11:56:13,337 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 11:56:13,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:13,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1582545115, now seen corresponding path program 2 times [2022-12-13 11:56:13,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:13,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798080364] [2022-12-13 11:56:13,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:13,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:14,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:56:14,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:14,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798080364] [2022-12-13 11:56:14,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798080364] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:56:14,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103964968] [2022-12-13 11:56:14,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:56:14,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:14,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:56:14,053 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:56:14,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:56:14,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:56:14,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:56:14,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 11:56:14,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:14,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:56:14,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:56:15,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103964968] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:15,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:56:15,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 15 [2022-12-13 11:56:15,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336440600] [2022-12-13 11:56:15,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:15,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 11:56:15,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:15,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 11:56:15,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-12-13 11:56:15,193 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 179 [2022-12-13 11:56:15,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 184 flow. Second operand has 17 states, 17 states have (on average 60.294117647058826) internal successors, (1025), 17 states have internal predecessors, (1025), 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 11:56:15,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:15,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 179 [2022-12-13 11:56:15,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:16,066 INFO L130 PetriNetUnfolder]: 238/395 cut-off events. [2022-12-13 11:56:16,067 INFO L131 PetriNetUnfolder]: For 917/917 co-relation queries the response was YES. [2022-12-13 11:56:16,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1830 conditions, 395 events. 238/395 cut-off events. For 917/917 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1370 event pairs, 0 based on Foata normal form. 10/367 useless extension candidates. Maximal degree in co-relation 843. Up to 179 conditions per place. [2022-12-13 11:56:16,070 INFO L137 encePairwiseOnDemand]: 173/179 looper letters, 54 selfloop transitions, 64 changer transitions 24/142 dead transitions. [2022-12-13 11:56:16,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 142 transitions, 1174 flow [2022-12-13 11:56:16,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 11:56:16,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 11:56:16,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1225 transitions. [2022-12-13 11:56:16,073 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3601881799470744 [2022-12-13 11:56:16,074 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1225 transitions. [2022-12-13 11:56:16,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1225 transitions. [2022-12-13 11:56:16,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:56:16,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1225 transitions. [2022-12-13 11:56:16,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 64.47368421052632) internal successors, (1225), 19 states have internal predecessors, (1225), 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 11:56:16,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 179.0) internal successors, (3580), 20 states have internal predecessors, (3580), 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 11:56:16,079 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 179.0) internal successors, (3580), 20 states have internal predecessors, (3580), 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 11:56:16,080 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 184 flow. Second operand 19 states and 1225 transitions. [2022-12-13 11:56:16,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 142 transitions, 1174 flow [2022-12-13 11:56:16,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 142 transitions, 1102 flow, removed 30 selfloop flow, removed 2 redundant places. [2022-12-13 11:56:16,085 INFO L231 Difference]: Finished difference. Result has 61 places, 76 transitions, 772 flow [2022-12-13 11:56:16,085 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=772, PETRI_PLACES=61, PETRI_TRANSITIONS=76} [2022-12-13 11:56:16,086 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 43 predicate places. [2022-12-13 11:56:16,086 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 76 transitions, 772 flow [2022-12-13 11:56:16,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 60.294117647058826) internal successors, (1025), 17 states have internal predecessors, (1025), 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 11:56:16,086 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:16,086 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:16,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 11:56:16,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:16,287 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 11:56:16,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:16,287 INFO L85 PathProgramCache]: Analyzing trace with hash 237298893, now seen corresponding path program 3 times [2022-12-13 11:56:16,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:16,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735114294] [2022-12-13 11:56:16,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:16,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:16,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:56:16,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:16,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735114294] [2022-12-13 11:56:16,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735114294] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:56:16,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434102042] [2022-12-13 11:56:16,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:56:16,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:16,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:56:16,761 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:56:16,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 11:56:16,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 11:56:16,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:56:16,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 11:56:16,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:17,050 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:56:17,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:17,641 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:56:17,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434102042] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:17,642 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:56:17,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-12-13 11:56:17,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455789484] [2022-12-13 11:56:17,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:17,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 11:56:17,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:17,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 11:56:17,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-12-13 11:56:17,757 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 179 [2022-12-13 11:56:17,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 76 transitions, 772 flow. Second operand has 18 states, 18 states have (on average 60.27777777777778) internal successors, (1085), 18 states have internal predecessors, (1085), 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 11:56:17,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:17,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 179 [2022-12-13 11:56:17,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:19,186 INFO L130 PetriNetUnfolder]: 530/845 cut-off events. [2022-12-13 11:56:19,186 INFO L131 PetriNetUnfolder]: For 5660/5660 co-relation queries the response was YES. [2022-12-13 11:56:19,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5042 conditions, 845 events. 530/845 cut-off events. For 5660/5660 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3487 event pairs, 8 based on Foata normal form. 24/835 useless extension candidates. Maximal degree in co-relation 4888. Up to 393 conditions per place. [2022-12-13 11:56:19,192 INFO L137 encePairwiseOnDemand]: 173/179 looper letters, 58 selfloop transitions, 147 changer transitions 63/268 dead transitions. [2022-12-13 11:56:19,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 268 transitions, 3232 flow [2022-12-13 11:56:19,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 11:56:19,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-13 11:56:19,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1826 transitions. [2022-12-13 11:56:19,201 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.35176266615295704 [2022-12-13 11:56:19,201 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1826 transitions. [2022-12-13 11:56:19,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1826 transitions. [2022-12-13 11:56:19,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:56:19,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1826 transitions. [2022-12-13 11:56:19,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 62.96551724137931) internal successors, (1826), 29 states have internal predecessors, (1826), 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 11:56:19,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 179.0) internal successors, (5370), 30 states have internal predecessors, (5370), 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 11:56:19,210 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 179.0) internal successors, (5370), 30 states have internal predecessors, (5370), 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 11:56:19,210 INFO L175 Difference]: Start difference. First operand has 61 places, 76 transitions, 772 flow. Second operand 29 states and 1826 transitions. [2022-12-13 11:56:19,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 268 transitions, 3232 flow [2022-12-13 11:56:19,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 268 transitions, 2250 flow, removed 487 selfloop flow, removed 2 redundant places. [2022-12-13 11:56:19,226 INFO L231 Difference]: Finished difference. Result has 98 places, 165 transitions, 1642 flow [2022-12-13 11:56:19,226 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1642, PETRI_PLACES=98, PETRI_TRANSITIONS=165} [2022-12-13 11:56:19,226 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 80 predicate places. [2022-12-13 11:56:19,226 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 165 transitions, 1642 flow [2022-12-13 11:56:19,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 60.27777777777778) internal successors, (1085), 18 states have internal predecessors, (1085), 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 11:56:19,227 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:19,227 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:19,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 11:56:19,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:19,428 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 11:56:19,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:19,428 INFO L85 PathProgramCache]: Analyzing trace with hash -830488819, now seen corresponding path program 4 times [2022-12-13 11:56:19,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:19,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651121430] [2022-12-13 11:56:19,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:19,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:19,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:56:19,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:19,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651121430] [2022-12-13 11:56:19,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651121430] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:56:19,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988996301] [2022-12-13 11:56:19,797 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:56:19,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:19,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:56:19,798 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:56:19,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 11:56:19,852 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:56:19,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:56:19,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 11:56:19,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:20,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:56:20,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:20,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:56:20,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988996301] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:20,570 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:56:20,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-12-13 11:56:20,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758387396] [2022-12-13 11:56:20,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:20,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 11:56:20,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:20,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 11:56:20,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2022-12-13 11:56:20,689 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 179 [2022-12-13 11:56:20,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 165 transitions, 1642 flow. Second operand has 18 states, 18 states have (on average 60.0) internal successors, (1080), 18 states have internal predecessors, (1080), 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 11:56:20,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:20,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 179 [2022-12-13 11:56:20,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:23,286 INFO L130 PetriNetUnfolder]: 807/1291 cut-off events. [2022-12-13 11:56:23,287 INFO L131 PetriNetUnfolder]: For 11227/11227 co-relation queries the response was YES. [2022-12-13 11:56:23,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7324 conditions, 1291 events. 807/1291 cut-off events. For 11227/11227 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5754 event pairs, 4 based on Foata normal form. 18/1293 useless extension candidates. Maximal degree in co-relation 7162. Up to 277 conditions per place. [2022-12-13 11:56:23,294 INFO L137 encePairwiseOnDemand]: 173/179 looper letters, 114 selfloop transitions, 298 changer transitions 37/449 dead transitions. [2022-12-13 11:56:23,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 449 transitions, 5164 flow [2022-12-13 11:56:23,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-13 11:56:23,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-12-13 11:56:23,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2631 transitions. [2022-12-13 11:56:23,299 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.34996009577015164 [2022-12-13 11:56:23,299 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2631 transitions. [2022-12-13 11:56:23,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2631 transitions. [2022-12-13 11:56:23,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:56:23,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2631 transitions. [2022-12-13 11:56:23,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 62.642857142857146) internal successors, (2631), 42 states have internal predecessors, (2631), 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 11:56:23,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 179.0) internal successors, (7697), 43 states have internal predecessors, (7697), 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 11:56:23,310 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 179.0) internal successors, (7697), 43 states have internal predecessors, (7697), 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 11:56:23,310 INFO L175 Difference]: Start difference. First operand has 98 places, 165 transitions, 1642 flow. Second operand 42 states and 2631 transitions. [2022-12-13 11:56:23,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 449 transitions, 5164 flow [2022-12-13 11:56:23,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 449 transitions, 4785 flow, removed 171 selfloop flow, removed 8 redundant places. [2022-12-13 11:56:23,344 INFO L231 Difference]: Finished difference. Result has 133 places, 354 transitions, 4104 flow [2022-12-13 11:56:23,345 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=4104, PETRI_PLACES=133, PETRI_TRANSITIONS=354} [2022-12-13 11:56:23,345 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 115 predicate places. [2022-12-13 11:56:23,345 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 354 transitions, 4104 flow [2022-12-13 11:56:23,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 60.0) internal successors, (1080), 18 states have internal predecessors, (1080), 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 11:56:23,346 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:23,346 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:23,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 11:56:23,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 11:56:23,547 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 11:56:23,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:23,549 INFO L85 PathProgramCache]: Analyzing trace with hash 780452139, now seen corresponding path program 5 times [2022-12-13 11:56:23,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:23,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113437528] [2022-12-13 11:56:23,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:23,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:23,991 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:56:23,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:23,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113437528] [2022-12-13 11:56:23,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113437528] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:56:23,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524344587] [2022-12-13 11:56:23,992 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:56:23,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:23,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:56:23,993 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:56:23,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 11:56:24,043 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:56:24,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:56:24,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 11:56:24,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:24,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:56:24,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:24,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:56:24,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524344587] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:24,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:56:24,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2022-12-13 11:56:24,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496527161] [2022-12-13 11:56:24,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:24,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 11:56:24,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:24,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 11:56:24,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2022-12-13 11:56:24,827 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 179 [2022-12-13 11:56:24,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 354 transitions, 4104 flow. Second operand has 19 states, 19 states have (on average 60.89473684210526) internal successors, (1157), 19 states have internal predecessors, (1157), 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 11:56:24,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:24,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 179 [2022-12-13 11:56:24,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:26,100 INFO L130 PetriNetUnfolder]: 1382/2182 cut-off events. [2022-12-13 11:56:26,100 INFO L131 PetriNetUnfolder]: For 15003/15003 co-relation queries the response was YES. [2022-12-13 11:56:26,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13078 conditions, 2182 events. 1382/2182 cut-off events. For 15003/15003 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 10641 event pairs, 0 based on Foata normal form. 36/2218 useless extension candidates. Maximal degree in co-relation 12890. Up to 549 conditions per place. [2022-12-13 11:56:26,113 INFO L137 encePairwiseOnDemand]: 173/179 looper letters, 167 selfloop transitions, 602 changer transitions 21/790 dead transitions. [2022-12-13 11:56:26,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 790 transitions, 10185 flow [2022-12-13 11:56:26,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 11:56:26,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-13 11:56:26,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1865 transitions. [2022-12-13 11:56:26,116 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3592756694278559 [2022-12-13 11:56:26,116 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1865 transitions. [2022-12-13 11:56:26,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1865 transitions. [2022-12-13 11:56:26,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:56:26,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1865 transitions. [2022-12-13 11:56:26,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 64.3103448275862) internal successors, (1865), 29 states have internal predecessors, (1865), 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 11:56:26,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 179.0) internal successors, (5370), 30 states have internal predecessors, (5370), 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 11:56:26,136 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 179.0) internal successors, (5370), 30 states have internal predecessors, (5370), 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 11:56:26,136 INFO L175 Difference]: Start difference. First operand has 133 places, 354 transitions, 4104 flow. Second operand 29 states and 1865 transitions. [2022-12-13 11:56:26,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 790 transitions, 10185 flow [2022-12-13 11:56:26,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 790 transitions, 8493 flow, removed 781 selfloop flow, removed 16 redundant places. [2022-12-13 11:56:26,258 INFO L231 Difference]: Finished difference. Result has 153 places, 709 transitions, 8728 flow [2022-12-13 11:56:26,258 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=3228, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=298, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8728, PETRI_PLACES=153, PETRI_TRANSITIONS=709} [2022-12-13 11:56:26,258 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 135 predicate places. [2022-12-13 11:56:26,259 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 709 transitions, 8728 flow [2022-12-13 11:56:26,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 60.89473684210526) internal successors, (1157), 19 states have internal predecessors, (1157), 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 11:56:26,259 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:26,259 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:26,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 11:56:26,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:26,461 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 11:56:26,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:26,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1730482295, now seen corresponding path program 6 times [2022-12-13 11:56:26,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:26,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623999072] [2022-12-13 11:56:26,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:26,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:26,794 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:56:26,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:26,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623999072] [2022-12-13 11:56:26,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623999072] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:56:26,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275326819] [2022-12-13 11:56:26,795 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:56:26,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:26,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:56:26,796 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:56:26,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 11:56:26,851 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-13 11:56:26,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:56:26,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 11:56:26,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:27,129 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:56:27,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:27,442 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:56:27,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275326819] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:27,443 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:56:27,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2022-12-13 11:56:27,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487678248] [2022-12-13 11:56:27,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:27,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 11:56:27,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:27,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 11:56:27,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-12-13 11:56:27,522 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 179 [2022-12-13 11:56:27,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 709 transitions, 8728 flow. Second operand has 15 states, 15 states have (on average 66.46666666666667) internal successors, (997), 15 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:27,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:27,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 179 [2022-12-13 11:56:27,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:28,014 INFO L130 PetriNetUnfolder]: 991/1581 cut-off events. [2022-12-13 11:56:28,014 INFO L131 PetriNetUnfolder]: For 4667/4667 co-relation queries the response was YES. [2022-12-13 11:56:28,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10007 conditions, 1581 events. 991/1581 cut-off events. For 4667/4667 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7384 event pairs, 4 based on Foata normal form. 156/1737 useless extension candidates. Maximal degree in co-relation 9954. Up to 454 conditions per place. [2022-12-13 11:56:28,024 INFO L137 encePairwiseOnDemand]: 174/179 looper letters, 202 selfloop transitions, 338 changer transitions 80/620 dead transitions. [2022-12-13 11:56:28,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 620 transitions, 8760 flow [2022-12-13 11:56:28,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 11:56:28,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 11:56:28,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 748 transitions. [2022-12-13 11:56:28,026 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.37988826815642457 [2022-12-13 11:56:28,026 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 748 transitions. [2022-12-13 11:56:28,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 748 transitions. [2022-12-13 11:56:28,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:56:28,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 748 transitions. [2022-12-13 11:56:28,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 68.0) internal successors, (748), 11 states have internal predecessors, (748), 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 11:56:28,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 179.0) internal successors, (2148), 12 states have internal predecessors, (2148), 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 11:56:28,029 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 179.0) internal successors, (2148), 12 states have internal predecessors, (2148), 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 11:56:28,029 INFO L175 Difference]: Start difference. First operand has 153 places, 709 transitions, 8728 flow. Second operand 11 states and 748 transitions. [2022-12-13 11:56:28,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 620 transitions, 8760 flow [2022-12-13 11:56:28,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 620 transitions, 8005 flow, removed 115 selfloop flow, removed 10 redundant places. [2022-12-13 11:56:28,131 INFO L231 Difference]: Finished difference. Result has 146 places, 526 transitions, 6486 flow [2022-12-13 11:56:28,131 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=6494, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=333, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6486, PETRI_PLACES=146, PETRI_TRANSITIONS=526} [2022-12-13 11:56:28,131 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 128 predicate places. [2022-12-13 11:56:28,132 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 526 transitions, 6486 flow [2022-12-13 11:56:28,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 66.46666666666667) internal successors, (997), 15 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:28,132 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:28,132 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:28,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 11:56:28,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:28,333 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 11:56:28,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:28,334 INFO L85 PathProgramCache]: Analyzing trace with hash -288777914, now seen corresponding path program 7 times [2022-12-13 11:56:28,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:28,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645081341] [2022-12-13 11:56:28,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:28,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:28,698 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:56:28,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:28,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645081341] [2022-12-13 11:56:28,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645081341] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:56:28,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737996207] [2022-12-13 11:56:28,699 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:56:28,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:28,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:56:28,700 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:56:28,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 11:56:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:28,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 11:56:28,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:28,924 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:56:28,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:56:29,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737996207] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:29,198 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:56:29,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 12 [2022-12-13 11:56:29,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777086118] [2022-12-13 11:56:29,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:29,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 11:56:29,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:29,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 11:56:29,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:56:29,221 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 179 [2022-12-13 11:56:29,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 526 transitions, 6486 flow. Second operand has 13 states, 13 states have (on average 70.46153846153847) internal successors, (916), 13 states have internal predecessors, (916), 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 11:56:29,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:29,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 179 [2022-12-13 11:56:29,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:29,488 INFO L130 PetriNetUnfolder]: 699/1178 cut-off events. [2022-12-13 11:56:29,488 INFO L131 PetriNetUnfolder]: For 2922/2922 co-relation queries the response was YES. [2022-12-13 11:56:29,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6869 conditions, 1178 events. 699/1178 cut-off events. For 2922/2922 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5514 event pairs, 9 based on Foata normal form. 148/1326 useless extension candidates. Maximal degree in co-relation 6838. Up to 451 conditions per place. [2022-12-13 11:56:29,495 INFO L137 encePairwiseOnDemand]: 175/179 looper letters, 165 selfloop transitions, 266 changer transitions 17/448 dead transitions. [2022-12-13 11:56:29,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 448 transitions, 5996 flow [2022-12-13 11:56:29,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:56:29,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 11:56:29,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 508 transitions. [2022-12-13 11:56:29,496 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4054269752593775 [2022-12-13 11:56:29,496 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 508 transitions. [2022-12-13 11:56:29,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 508 transitions. [2022-12-13 11:56:29,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:56:29,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 508 transitions. [2022-12-13 11:56:29,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.57142857142857) internal successors, (508), 7 states have internal predecessors, (508), 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 11:56:29,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 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 11:56:29,498 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 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 11:56:29,498 INFO L175 Difference]: Start difference. First operand has 146 places, 526 transitions, 6486 flow. Second operand 7 states and 508 transitions. [2022-12-13 11:56:29,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 448 transitions, 5996 flow [2022-12-13 11:56:29,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 448 transitions, 5625 flow, removed 32 selfloop flow, removed 11 redundant places. [2022-12-13 11:56:29,539 INFO L231 Difference]: Finished difference. Result has 135 places, 425 transitions, 5031 flow [2022-12-13 11:56:29,539 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=4711, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5031, PETRI_PLACES=135, PETRI_TRANSITIONS=425} [2022-12-13 11:56:29,539 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 117 predicate places. [2022-12-13 11:56:29,539 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 425 transitions, 5031 flow [2022-12-13 11:56:29,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 70.46153846153847) internal successors, (916), 13 states have internal predecessors, (916), 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 11:56:29,540 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:29,540 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:29,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 11:56:29,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:29,742 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 11:56:29,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:29,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1135929971, now seen corresponding path program 8 times [2022-12-13 11:56:29,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:29,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407553360] [2022-12-13 11:56:29,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:29,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:30,329 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:56:30,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:30,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407553360] [2022-12-13 11:56:30,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407553360] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:56:30,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851094578] [2022-12-13 11:56:30,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:56:30,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:30,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:56:30,330 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:56:30,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 11:56:30,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:56:30,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:56:30,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 11:56:30,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:30,793 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:56:30,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:31,475 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:56:31,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851094578] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:31,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:56:31,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2022-12-13 11:56:31,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433022790] [2022-12-13 11:56:31,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:31,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 11:56:31,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:31,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 11:56:31,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2022-12-13 11:56:31,663 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 179 [2022-12-13 11:56:31,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 425 transitions, 5031 flow. Second operand has 23 states, 23 states have (on average 59.73913043478261) internal successors, (1374), 23 states have internal predecessors, (1374), 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 11:56:31,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:31,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 179 [2022-12-13 11:56:31,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:33,915 INFO L130 PetriNetUnfolder]: 1195/2010 cut-off events. [2022-12-13 11:56:33,916 INFO L131 PetriNetUnfolder]: For 2040/2040 co-relation queries the response was YES. [2022-12-13 11:56:33,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11921 conditions, 2010 events. 1195/2010 cut-off events. For 2040/2040 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10756 event pairs, 7 based on Foata normal form. 4/2006 useless extension candidates. Maximal degree in co-relation 11894. Up to 685 conditions per place. [2022-12-13 11:56:33,927 INFO L137 encePairwiseOnDemand]: 173/179 looper letters, 47 selfloop transitions, 709 changer transitions 51/807 dead transitions. [2022-12-13 11:56:33,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 807 transitions, 10646 flow [2022-12-13 11:56:33,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-13 11:56:33,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-13 11:56:33,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2226 transitions. [2022-12-13 11:56:33,930 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.34543761638733705 [2022-12-13 11:56:33,930 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2226 transitions. [2022-12-13 11:56:33,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2226 transitions. [2022-12-13 11:56:33,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:56:33,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2226 transitions. [2022-12-13 11:56:33,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 61.833333333333336) internal successors, (2226), 36 states have internal predecessors, (2226), 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 11:56:33,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 179.0) internal successors, (6623), 37 states have internal predecessors, (6623), 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 11:56:33,937 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 179.0) internal successors, (6623), 37 states have internal predecessors, (6623), 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 11:56:33,937 INFO L175 Difference]: Start difference. First operand has 135 places, 425 transitions, 5031 flow. Second operand 36 states and 2226 transitions. [2022-12-13 11:56:33,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 807 transitions, 10646 flow [2022-12-13 11:56:33,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 807 transitions, 10043 flow, removed 13 selfloop flow, removed 6 redundant places. [2022-12-13 11:56:34,007 INFO L231 Difference]: Finished difference. Result has 168 places, 725 transitions, 9378 flow [2022-12-13 11:56:34,007 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=4700, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=410, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=9378, PETRI_PLACES=168, PETRI_TRANSITIONS=725} [2022-12-13 11:56:34,008 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 150 predicate places. [2022-12-13 11:56:34,008 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 725 transitions, 9378 flow [2022-12-13 11:56:34,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 59.73913043478261) internal successors, (1374), 23 states have internal predecessors, (1374), 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 11:56:34,008 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:34,008 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:34,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 11:56:34,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:34,210 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 11:56:34,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:34,212 INFO L85 PathProgramCache]: Analyzing trace with hash 230091131, now seen corresponding path program 9 times [2022-12-13 11:56:34,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:34,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216415704] [2022-12-13 11:56:34,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:34,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:34,788 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:56:34,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:34,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216415704] [2022-12-13 11:56:34,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216415704] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:56:34,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84422212] [2022-12-13 11:56:34,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:56:34,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:34,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:56:34,789 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:56:34,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 11:56:34,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 11:56:34,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:56:34,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 11:56:34,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:35,364 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:56:35,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:35,825 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:56:35,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84422212] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:35,825 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:56:35,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 19 [2022-12-13 11:56:35,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823402869] [2022-12-13 11:56:35,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:35,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 11:56:35,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:35,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 11:56:35,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-12-13 11:56:35,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 179 [2022-12-13 11:56:35,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 725 transitions, 9378 flow. Second operand has 21 states, 21 states have (on average 59.76190476190476) internal successors, (1255), 21 states have internal predecessors, (1255), 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 11:56:35,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:35,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 179 [2022-12-13 11:56:35,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:37,073 INFO L130 PetriNetUnfolder]: 1282/2119 cut-off events. [2022-12-13 11:56:37,073 INFO L131 PetriNetUnfolder]: For 1543/1543 co-relation queries the response was YES. [2022-12-13 11:56:37,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13691 conditions, 2119 events. 1282/2119 cut-off events. For 1543/1543 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 11304 event pairs, 2 based on Foata normal form. 2/2075 useless extension candidates. Maximal degree in co-relation 13661. Up to 1342 conditions per place. [2022-12-13 11:56:37,083 INFO L137 encePairwiseOnDemand]: 173/179 looper letters, 509 selfloop transitions, 310 changer transitions 33/852 dead transitions. [2022-12-13 11:56:37,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 852 transitions, 12402 flow [2022-12-13 11:56:37,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 11:56:37,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 11:56:37,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1180 transitions. [2022-12-13 11:56:37,085 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.34695677741840636 [2022-12-13 11:56:37,085 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1180 transitions. [2022-12-13 11:56:37,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1180 transitions. [2022-12-13 11:56:37,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:56:37,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1180 transitions. [2022-12-13 11:56:37,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 62.10526315789474) internal successors, (1180), 19 states have internal predecessors, (1180), 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 11:56:37,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 179.0) internal successors, (3580), 20 states have internal predecessors, (3580), 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 11:56:37,089 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 179.0) internal successors, (3580), 20 states have internal predecessors, (3580), 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 11:56:37,089 INFO L175 Difference]: Start difference. First operand has 168 places, 725 transitions, 9378 flow. Second operand 19 states and 1180 transitions. [2022-12-13 11:56:37,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 852 transitions, 12402 flow [2022-12-13 11:56:37,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 852 transitions, 12271 flow, removed 34 selfloop flow, removed 9 redundant places. [2022-12-13 11:56:37,165 INFO L231 Difference]: Finished difference. Result has 182 places, 784 transitions, 11022 flow [2022-12-13 11:56:37,165 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=9261, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=11022, PETRI_PLACES=182, PETRI_TRANSITIONS=784} [2022-12-13 11:56:37,166 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 164 predicate places. [2022-12-13 11:56:37,166 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 784 transitions, 11022 flow [2022-12-13 11:56:37,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 59.76190476190476) internal successors, (1255), 21 states have internal predecessors, (1255), 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 11:56:37,166 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:37,166 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:37,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 11:56:37,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:37,368 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 11:56:37,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:37,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1497629445, now seen corresponding path program 10 times [2022-12-13 11:56:37,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:37,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649658204] [2022-12-13 11:56:37,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:37,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:38,234 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:56:38,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:38,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649658204] [2022-12-13 11:56:38,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649658204] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:56:38,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022944503] [2022-12-13 11:56:38,235 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:56:38,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:38,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:56:38,236 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:56:38,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 11:56:38,300 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:56:38,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:56:38,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 11:56:38,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:56:38,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:39,619 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:56:39,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022944503] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:39,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:56:39,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 28 [2022-12-13 11:56:39,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905328349] [2022-12-13 11:56:39,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:39,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-13 11:56:39,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:39,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-13 11:56:39,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=707, Unknown=0, NotChecked=0, Total=870 [2022-12-13 11:56:39,882 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 179 [2022-12-13 11:56:39,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 784 transitions, 11022 flow. Second operand has 30 states, 30 states have (on average 59.63333333333333) internal successors, (1789), 30 states have internal predecessors, (1789), 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 11:56:39,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:39,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 179 [2022-12-13 11:56:39,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:41,002 INFO L130 PetriNetUnfolder]: 1241/2034 cut-off events. [2022-12-13 11:56:41,002 INFO L131 PetriNetUnfolder]: For 2004/2004 co-relation queries the response was YES. [2022-12-13 11:56:41,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14222 conditions, 2034 events. 1241/2034 cut-off events. For 2004/2004 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10581 event pairs, 0 based on Foata normal form. 2/2004 useless extension candidates. Maximal degree in co-relation 14189. Up to 787 conditions per place. [2022-12-13 11:56:41,009 INFO L137 encePairwiseOnDemand]: 173/179 looper letters, 0 selfloop transitions, 0 changer transitions 797/797 dead transitions. [2022-12-13 11:56:41,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 797 transitions, 12642 flow [2022-12-13 11:56:41,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 11:56:41,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 11:56:41,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 800 transitions. [2022-12-13 11:56:41,010 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3437902879243661 [2022-12-13 11:56:41,010 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 800 transitions. [2022-12-13 11:56:41,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 800 transitions. [2022-12-13 11:56:41,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:56:41,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 800 transitions. [2022-12-13 11:56:41,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 61.53846153846154) internal successors, (800), 13 states have internal predecessors, (800), 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 11:56:41,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 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 11:56:41,014 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 179.0) internal successors, (2506), 14 states have internal predecessors, (2506), 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 11:56:41,014 INFO L175 Difference]: Start difference. First operand has 182 places, 784 transitions, 11022 flow. Second operand 13 states and 800 transitions. [2022-12-13 11:56:41,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 797 transitions, 12642 flow [2022-12-13 11:56:41,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 797 transitions, 12428 flow, removed 9 selfloop flow, removed 7 redundant places. [2022-12-13 11:56:41,110 INFO L231 Difference]: Finished difference. Result has 181 places, 0 transitions, 0 flow [2022-12-13 11:56:41,110 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=10804, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=783, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=783, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=181, PETRI_TRANSITIONS=0} [2022-12-13 11:56:41,110 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 163 predicate places. [2022-12-13 11:56:41,110 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 0 transitions, 0 flow [2022-12-13 11:56:41,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 59.63333333333333) internal successors, (1789), 30 states have internal predecessors, (1789), 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 11:56:41,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-13 11:56:41,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-13 11:56:41,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-13 11:56:41,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 11:56:41,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 11:56:41,314 INFO L445 BasicCegarLoop]: Path program histogram: [10, 1, 1] [2022-12-13 11:56:41,322 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 11:56:41,322 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 11:56:41,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 11:56:41 BasicIcfg [2022-12-13 11:56:41,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 11:56:41,331 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 11:56:41,331 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 11:56:41,332 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 11:56:41,333 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:56:09" (3/4) ... [2022-12-13 11:56:41,340 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 11:56:41,353 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 11:56:41,353 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 11:56:41,358 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-12-13 11:56:41,358 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 11:56:41,358 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 11:56:41,358 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 11:56:41,381 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 11:56:41,381 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 11:56:41,382 INFO L158 Benchmark]: Toolchain (without parser) took 32592.62ms. Allocated memory was 144.7MB in the beginning and 302.0MB in the end (delta: 157.3MB). Free memory was 108.6MB in the beginning and 214.0MB in the end (delta: -105.3MB). Peak memory consumption was 54.1MB. Max. memory is 16.1GB. [2022-12-13 11:56:41,382 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 102.8MB. Free memory is still 52.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:56:41,382 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.92ms. Allocated memory is still 144.7MB. Free memory was 108.6MB in the beginning and 96.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 11:56:41,382 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.52ms. Allocated memory is still 144.7MB. Free memory was 96.7MB in the beginning and 95.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:56:41,382 INFO L158 Benchmark]: Boogie Preprocessor took 19.13ms. Allocated memory is still 144.7MB. Free memory was 95.3MB in the beginning and 93.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:56:41,383 INFO L158 Benchmark]: RCFGBuilder took 293.94ms. Allocated memory is still 144.7MB. Free memory was 93.7MB in the beginning and 80.4MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 11:56:41,383 INFO L158 Benchmark]: TraceAbstraction took 32015.12ms. Allocated memory was 144.7MB in the beginning and 302.0MB in the end (delta: 157.3MB). Free memory was 79.4MB in the beginning and 217.3MB in the end (delta: -137.9MB). Peak memory consumption was 194.6MB. Max. memory is 16.1GB. [2022-12-13 11:56:41,383 INFO L158 Benchmark]: Witness Printer took 50.49ms. Allocated memory is still 302.0MB. Free memory was 217.3MB in the beginning and 214.0MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 11:56:41,384 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 102.8MB. Free memory is still 52.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 184.92ms. Allocated memory is still 144.7MB. Free memory was 108.6MB in the beginning and 96.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.52ms. Allocated memory is still 144.7MB. Free memory was 96.7MB in the beginning and 95.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.13ms. Allocated memory is still 144.7MB. Free memory was 95.3MB in the beginning and 93.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 293.94ms. Allocated memory is still 144.7MB. Free memory was 93.7MB in the beginning and 80.4MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 32015.12ms. Allocated memory was 144.7MB in the beginning and 302.0MB in the end (delta: 157.3MB). Free memory was 79.4MB in the beginning and 217.3MB in the end (delta: -137.9MB). Peak memory consumption was 194.6MB. Max. memory is 16.1GB. * Witness Printer took 50.49ms. Allocated memory is still 302.0MB. Free memory was 217.3MB in the beginning and 214.0MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 80 PlacesBefore, 18 PlacesAfterwards, 84 TransitionsBefore, 13 TransitionsAfterwards, 1088 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 6 ConcurrentYvCompositions, 9 ChoiceCompositions, 84 TotalNumberOfCompositions, 1084 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1050, independent: 1044, independent conditional: 0, independent unconditional: 1044, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 575, independent: 570, independent conditional: 0, independent unconditional: 570, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1050, independent: 474, independent conditional: 0, independent unconditional: 474, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 575, unknown conditional: 0, unknown unconditional: 575] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 101]: 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 5 procedures, 113 locations, 3 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: 31.9s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 13.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2047 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1973 mSDsluCounter, 701 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 699 mSDsCounter, 846 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4517 IncrementalHoareTripleChecker+Invalid, 5363 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 846 mSolverCounterUnsat, 2 mSDtfsCounter, 4517 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 527 GetRequests, 181 SyntacticMatches, 21 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3305 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11022occurred in iteration=11, InterpolantAutomatonStates: 224, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 12.5s InterpolantComputationTime, 339 NumberOfCodeBlocks, 339 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 465 ConstructedInterpolants, 0 QuantifiedInterpolants, 6403 SizeOfPredicates, 112 NumberOfNonLiveVariables, 1148 ConjunctsInSsa, 160 ConjunctsInUnsatCore, 32 InterpolantComputations, 2 PerfectInterpolantSequences, 25/271 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 11:56:41,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3ba8d7-bf4f-4d5d-84a8-53182a01db1b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE