./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe013_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_a5c0348e-a508-4df4-965b-ebddc8ffd68e/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c0348e-a508-4df4-965b-ebddc8ffd68e/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c0348e-a508-4df4-965b-ebddc8ffd68e/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c0348e-a508-4df4-965b-ebddc8ffd68e/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe013_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c0348e-a508-4df4-965b-ebddc8ffd68e/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c0348e-a508-4df4-965b-ebddc8ffd68e/bin/uautomizer-Dbtcem3rbc --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 0cdeed82108b12e5d5525e3abe542fd48b9a422ac7475147d5db7c8538ce4dc0 --- 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-5e519f3 [2022-11-02 20:24:43,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:24:43,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:24:43,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:24:43,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:24:43,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:24:43,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:24:43,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:24:43,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:24:43,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:24:43,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:24:43,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:24:43,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:24:43,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:24:43,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:24:43,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:24:43,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:24:43,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:24:43,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:24:43,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:24:43,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:24:43,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:24:43,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:24:43,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:24:43,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:24:43,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:24:43,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:24:43,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:24:43,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:24:43,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:24:43,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:24:43,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:24:43,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:24:43,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:24:43,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:24:43,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:24:43,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:24:43,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:24:43,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:24:43,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:24:43,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:24:43,813 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c0348e-a508-4df4-965b-ebddc8ffd68e/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:24:43,854 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:24:43,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:24:43,855 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:24:43,855 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:24:43,856 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:24:43,856 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:24:43,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:24:43,858 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:24:43,858 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:24:43,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:24:43,859 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:24:43,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:24:43,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:24:43,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:24:43,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:24:43,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:24:43,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:24:43,860 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:24:43,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:24:43,861 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:24:43,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:24:43,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:24:43,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:24:43,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:24:43,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:24:43,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:24:43,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:24:43,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:24:43,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:24:43,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:24:43,864 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:24:43,864 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:24:43,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:24:43,865 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c0348e-a508-4df4-965b-ebddc8ffd68e/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c0348e-a508-4df4-965b-ebddc8ffd68e/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cdeed82108b12e5d5525e3abe542fd48b9a422ac7475147d5db7c8538ce4dc0 [2022-11-02 20:24:44,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:24:44,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:24:44,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:24:44,228 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:24:44,230 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:24:44,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c0348e-a508-4df4-965b-ebddc8ffd68e/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-wmm/safe013_tso.i [2022-11-02 20:24:44,312 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c0348e-a508-4df4-965b-ebddc8ffd68e/bin/uautomizer-Dbtcem3rbc/data/de7db5ac0/9244e34164874569b19b568d71b6e0e9/FLAG88224e956 [2022-11-02 20:24:44,891 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:24:44,892 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c0348e-a508-4df4-965b-ebddc8ffd68e/sv-benchmarks/c/pthread-wmm/safe013_tso.i [2022-11-02 20:24:44,919 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c0348e-a508-4df4-965b-ebddc8ffd68e/bin/uautomizer-Dbtcem3rbc/data/de7db5ac0/9244e34164874569b19b568d71b6e0e9/FLAG88224e956 [2022-11-02 20:24:45,207 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c0348e-a508-4df4-965b-ebddc8ffd68e/bin/uautomizer-Dbtcem3rbc/data/de7db5ac0/9244e34164874569b19b568d71b6e0e9 [2022-11-02 20:24:45,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:24:45,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:24:45,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:24:45,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:24:45,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:24:45,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:24:45" (1/1) ... [2022-11-02 20:24:45,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77e71ed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:45, skipping insertion in model container [2022-11-02 20:24:45,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:24:45" (1/1) ... [2022-11-02 20:24:45,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:24:45,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:24:45,455 WARN L230 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_a5c0348e-a508-4df4-965b-ebddc8ffd68e/sv-benchmarks/c/pthread-wmm/safe013_tso.i[945,958] [2022-11-02 20:24:45,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:24:45,689 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:24:45,703 WARN L230 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_a5c0348e-a508-4df4-965b-ebddc8ffd68e/sv-benchmarks/c/pthread-wmm/safe013_tso.i[945,958] [2022-11-02 20:24:45,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:24:45,790 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:24:45,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:45 WrapperNode [2022-11-02 20:24:45,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:24:45,792 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:24:45,792 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:24:45,792 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:24:45,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:45" (1/1) ... [2022-11-02 20:24:45,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:45" (1/1) ... [2022-11-02 20:24:45,863 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-11-02 20:24:45,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:24:45,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:24:45,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:24:45,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:24:45,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:45" (1/1) ... [2022-11-02 20:24:45,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:45" (1/1) ... [2022-11-02 20:24:45,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:45" (1/1) ... [2022-11-02 20:24:45,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:45" (1/1) ... [2022-11-02 20:24:45,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:45" (1/1) ... [2022-11-02 20:24:45,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:45" (1/1) ... [2022-11-02 20:24:45,906 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:45" (1/1) ... [2022-11-02 20:24:45,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:45" (1/1) ... [2022-11-02 20:24:45,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:24:45,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:24:45,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:24:45,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:24:45,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:45" (1/1) ... [2022-11-02 20:24:45,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:24:45,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c0348e-a508-4df4-965b-ebddc8ffd68e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:24:45,955 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c0348e-a508-4df4-965b-ebddc8ffd68e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:24:45,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c0348e-a508-4df4-965b-ebddc8ffd68e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:24:46,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:24:46,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:24:46,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:24:46,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:24:46,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:24:46,004 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-02 20:24:46,004 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-02 20:24:46,004 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-02 20:24:46,005 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-02 20:24:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-02 20:24:46,006 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-02 20:24:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:24:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:24:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:24:46,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:24:46,008 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:24:46,190 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:24:46,192 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:24:46,435 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:24:46,442 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:24:46,442 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:24:46,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:24:46 BoogieIcfgContainer [2022-11-02 20:24:46,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:24:46,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:24:46,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:24:46,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:24:46,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:24:45" (1/3) ... [2022-11-02 20:24:46,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c231c21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:24:46, skipping insertion in model container [2022-11-02 20:24:46,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:45" (2/3) ... [2022-11-02 20:24:46,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c231c21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:24:46, skipping insertion in model container [2022-11-02 20:24:46,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:24:46" (3/3) ... [2022-11-02 20:24:46,459 INFO L112 eAbstractionObserver]: Analyzing ICFG safe013_tso.i [2022-11-02 20:24:46,468 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:24:46,475 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:24:46,476 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:24:46,476 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:24:46,547 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:24:46,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-11-02 20:24:46,698 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-11-02 20:24:46,699 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:24:46,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-11-02 20:24:46,703 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-11-02 20:24:46,739 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-11-02 20:24:46,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:24:46,762 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;@1524702c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:24:46,762 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 20:24:46,812 INFO L130 PetriNetUnfolder]: 1/74 cut-off events. [2022-11-02 20:24:46,813 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:24:46,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:24:46,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:24:46,815 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:24:46,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:46,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1214845436, now seen corresponding path program 1 times [2022-11-02 20:24:46,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:46,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873436147] [2022-11-02 20:24:46,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:46,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:47,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:24:47,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:47,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873436147] [2022-11-02 20:24:47,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873436147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:47,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:47,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:24:47,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080311836] [2022-11-02 20:24:47,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:47,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:24:47,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:47,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:24:47,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:24:47,747 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2022-11-02 20:24:47,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:47,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:24:47,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2022-11-02 20:24:47,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:24:48,101 INFO L130 PetriNetUnfolder]: 104/404 cut-off events. [2022-11-02 20:24:48,101 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-02 20:24:48,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 404 events. 104/404 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1989 event pairs, 33 based on Foata normal form. 15/406 useless extension candidates. Maximal degree in co-relation 605. Up to 95 conditions per place. [2022-11-02 20:24:48,111 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 20 selfloop transitions, 5 changer transitions 28/111 dead transitions. [2022-11-02 20:24:48,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 111 transitions, 343 flow [2022-11-02 20:24:48,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:24:48,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:24:48,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 705 transitions. [2022-11-02 20:24:48,133 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8514492753623188 [2022-11-02 20:24:48,134 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 705 transitions. [2022-11-02 20:24:48,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 705 transitions. [2022-11-02 20:24:48,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:24:48,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 705 transitions. [2022-11-02 20:24:48,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.33333333333333) internal successors, (705), 9 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:48,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:48,153 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:48,156 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 9 states and 705 transitions. [2022-11-02 20:24:48,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 111 transitions, 343 flow [2022-11-02 20:24:48,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 111 transitions, 338 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-02 20:24:48,163 INFO L231 Difference]: Finished difference. Result has 96 places, 77 transitions, 213 flow [2022-11-02 20:24:48,166 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=213, PETRI_PLACES=96, PETRI_TRANSITIONS=77} [2022-11-02 20:24:48,180 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 12 predicate places. [2022-11-02 20:24:48,181 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 77 transitions, 213 flow [2022-11-02 20:24:48,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:48,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:24:48,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:24:48,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:24:48,182 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:24:48,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:48,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1299331837, now seen corresponding path program 1 times [2022-11-02 20:24:48,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:48,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063759320] [2022-11-02 20:24:48,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:48,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:48,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:24:48,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:48,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063759320] [2022-11-02 20:24:48,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063759320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:48,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:48,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:24:48,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024577129] [2022-11-02 20:24:48,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:48,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:24:48,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:48,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:24:48,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:24:48,597 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 92 [2022-11-02 20:24:48,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 77 transitions, 213 flow. Second operand has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:48,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:24:48,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 92 [2022-11-02 20:24:48,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:24:48,773 INFO L130 PetriNetUnfolder]: 29/209 cut-off events. [2022-11-02 20:24:48,773 INFO L131 PetriNetUnfolder]: For 232/264 co-relation queries the response was YES. [2022-11-02 20:24:48,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 209 events. 29/209 cut-off events. For 232/264 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 832 event pairs, 16 based on Foata normal form. 4/200 useless extension candidates. Maximal degree in co-relation 433. Up to 47 conditions per place. [2022-11-02 20:24:48,776 INFO L137 encePairwiseOnDemand]: 86/92 looper letters, 9 selfloop transitions, 3 changer transitions 10/87 dead transitions. [2022-11-02 20:24:48,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 87 transitions, 319 flow [2022-11-02 20:24:48,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:24:48,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:24:48,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 716 transitions. [2022-11-02 20:24:48,779 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8647342995169082 [2022-11-02 20:24:48,779 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 716 transitions. [2022-11-02 20:24:48,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 716 transitions. [2022-11-02 20:24:48,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:24:48,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 716 transitions. [2022-11-02 20:24:48,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.55555555555556) internal successors, (716), 9 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) [2022-11-02 20:24:48,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:48,785 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:48,785 INFO L175 Difference]: Start difference. First operand has 96 places, 77 transitions, 213 flow. Second operand 9 states and 716 transitions. [2022-11-02 20:24:48,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 87 transitions, 319 flow [2022-11-02 20:24:48,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 87 transitions, 300 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-11-02 20:24:48,790 INFO L231 Difference]: Finished difference. Result has 101 places, 77 transitions, 225 flow [2022-11-02 20:24:48,790 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=225, PETRI_PLACES=101, PETRI_TRANSITIONS=77} [2022-11-02 20:24:48,791 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 17 predicate places. [2022-11-02 20:24:48,791 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 77 transitions, 225 flow [2022-11-02 20:24:48,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:48,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:24:48,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:24:48,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:24:48,793 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:24:48,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:48,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1079130877, now seen corresponding path program 1 times [2022-11-02 20:24:48,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:48,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568538771] [2022-11-02 20:24:48,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:48,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:49,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:24:49,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:49,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568538771] [2022-11-02 20:24:49,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568538771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:49,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:49,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:24:49,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214615659] [2022-11-02 20:24:49,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:49,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:24:49,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:49,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:24:49,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:24:49,113 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-11-02 20:24:49,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 77 transitions, 225 flow. Second operand has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:49,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:24:49,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-11-02 20:24:49,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:24:49,597 INFO L130 PetriNetUnfolder]: 234/708 cut-off events. [2022-11-02 20:24:49,597 INFO L131 PetriNetUnfolder]: For 1061/1165 co-relation queries the response was YES. [2022-11-02 20:24:49,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1875 conditions, 708 events. 234/708 cut-off events. For 1061/1165 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4294 event pairs, 6 based on Foata normal form. 21/711 useless extension candidates. Maximal degree in co-relation 1826. Up to 133 conditions per place. [2022-11-02 20:24:49,607 INFO L137 encePairwiseOnDemand]: 81/92 looper letters, 35 selfloop transitions, 16 changer transitions 62/169 dead transitions. [2022-11-02 20:24:49,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 169 transitions, 1015 flow [2022-11-02 20:24:49,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:24:49,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-02 20:24:49,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1291 transitions. [2022-11-02 20:24:49,613 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8254475703324808 [2022-11-02 20:24:49,613 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1291 transitions. [2022-11-02 20:24:49,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1291 transitions. [2022-11-02 20:24:49,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:24:49,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1291 transitions. [2022-11-02 20:24:49,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 75.94117647058823) internal successors, (1291), 17 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:49,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:49,626 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:49,627 INFO L175 Difference]: Start difference. First operand has 101 places, 77 transitions, 225 flow. Second operand 17 states and 1291 transitions. [2022-11-02 20:24:49,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 169 transitions, 1015 flow [2022-11-02 20:24:49,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 169 transitions, 925 flow, removed 40 selfloop flow, removed 8 redundant places. [2022-11-02 20:24:49,638 INFO L231 Difference]: Finished difference. Result has 119 places, 88 transitions, 411 flow [2022-11-02 20:24:49,639 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=411, PETRI_PLACES=119, PETRI_TRANSITIONS=88} [2022-11-02 20:24:49,639 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 35 predicate places. [2022-11-02 20:24:49,640 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 88 transitions, 411 flow [2022-11-02 20:24:49,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:49,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:24:49,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:24:49,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:24:49,641 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:24:49,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:49,642 INFO L85 PathProgramCache]: Analyzing trace with hash -473422274, now seen corresponding path program 1 times [2022-11-02 20:24:49,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:49,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176509174] [2022-11-02 20:24:49,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:49,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:49,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:24:49,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:49,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176509174] [2022-11-02 20:24:49,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176509174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:49,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:49,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:24:49,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308717871] [2022-11-02 20:24:49,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:49,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:24:49,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:49,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:24:49,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:24:49,955 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-11-02 20:24:49,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 88 transitions, 411 flow. Second operand has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:49,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:24:49,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-11-02 20:24:49,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:24:50,183 INFO L130 PetriNetUnfolder]: 62/375 cut-off events. [2022-11-02 20:24:50,183 INFO L131 PetriNetUnfolder]: For 2417/3205 co-relation queries the response was YES. [2022-11-02 20:24:50,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1276 conditions, 375 events. 62/375 cut-off events. For 2417/3205 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2121 event pairs, 15 based on Foata normal form. 40/393 useless extension candidates. Maximal degree in co-relation 1217. Up to 71 conditions per place. [2022-11-02 20:24:50,188 INFO L137 encePairwiseOnDemand]: 84/92 looper letters, 10 selfloop transitions, 6 changer transitions 23/103 dead transitions. [2022-11-02 20:24:50,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 103 transitions, 587 flow [2022-11-02 20:24:50,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:24:50,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:24:50,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 778 transitions. [2022-11-02 20:24:50,191 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8456521739130435 [2022-11-02 20:24:50,191 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 778 transitions. [2022-11-02 20:24:50,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 778 transitions. [2022-11-02 20:24:50,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:24:50,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 778 transitions. [2022-11-02 20:24:50,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.8) internal successors, (778), 10 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:50,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:50,202 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:50,202 INFO L175 Difference]: Start difference. First operand has 119 places, 88 transitions, 411 flow. Second operand 10 states and 778 transitions. [2022-11-02 20:24:50,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 103 transitions, 587 flow [2022-11-02 20:24:50,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 103 transitions, 509 flow, removed 39 selfloop flow, removed 9 redundant places. [2022-11-02 20:24:50,215 INFO L231 Difference]: Finished difference. Result has 115 places, 79 transitions, 298 flow [2022-11-02 20:24:50,215 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=298, PETRI_PLACES=115, PETRI_TRANSITIONS=79} [2022-11-02 20:24:50,218 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 31 predicate places. [2022-11-02 20:24:50,218 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 79 transitions, 298 flow [2022-11-02 20:24:50,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:50,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:24:50,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:24:50,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:24:50,220 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:24:50,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:50,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1526244240, now seen corresponding path program 1 times [2022-11-02 20:24:50,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:50,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105148572] [2022-11-02 20:24:50,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:50,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:50,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:24:50,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:50,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105148572] [2022-11-02 20:24:50,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105148572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:50,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:50,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:24:50,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364197043] [2022-11-02 20:24:50,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:50,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:24:50,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:50,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:24:50,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:24:50,468 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2022-11-02 20:24:50,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 79 transitions, 298 flow. Second operand has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:50,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:24:50,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2022-11-02 20:24:50,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:24:50,756 INFO L130 PetriNetUnfolder]: 57/295 cut-off events. [2022-11-02 20:24:50,756 INFO L131 PetriNetUnfolder]: For 889/1056 co-relation queries the response was YES. [2022-11-02 20:24:50,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 944 conditions, 295 events. 57/295 cut-off events. For 889/1056 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1356 event pairs, 11 based on Foata normal form. 9/296 useless extension candidates. Maximal degree in co-relation 921. Up to 57 conditions per place. [2022-11-02 20:24:50,760 INFO L137 encePairwiseOnDemand]: 83/92 looper letters, 19 selfloop transitions, 9 changer transitions 28/115 dead transitions. [2022-11-02 20:24:50,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 115 transitions, 702 flow [2022-11-02 20:24:50,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:24:50,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-02 20:24:50,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 993 transitions. [2022-11-02 20:24:50,764 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.830267558528428 [2022-11-02 20:24:50,764 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 993 transitions. [2022-11-02 20:24:50,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 993 transitions. [2022-11-02 20:24:50,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:24:50,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 993 transitions. [2022-11-02 20:24:50,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.38461538461539) internal successors, (993), 13 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:50,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:50,771 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:50,771 INFO L175 Difference]: Start difference. First operand has 115 places, 79 transitions, 298 flow. Second operand 13 states and 993 transitions. [2022-11-02 20:24:50,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 115 transitions, 702 flow [2022-11-02 20:24:50,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 115 transitions, 531 flow, removed 45 selfloop flow, removed 15 redundant places. [2022-11-02 20:24:50,777 INFO L231 Difference]: Finished difference. Result has 116 places, 81 transitions, 284 flow [2022-11-02 20:24:50,778 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=284, PETRI_PLACES=116, PETRI_TRANSITIONS=81} [2022-11-02 20:24:50,779 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 32 predicate places. [2022-11-02 20:24:50,779 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 81 transitions, 284 flow [2022-11-02 20:24:50,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:50,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:24:50,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:24:50,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:24:50,780 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:24:50,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:50,781 INFO L85 PathProgramCache]: Analyzing trace with hash -2034731557, now seen corresponding path program 1 times [2022-11-02 20:24:50,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:50,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560859807] [2022-11-02 20:24:50,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:50,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:51,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:24:51,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:51,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560859807] [2022-11-02 20:24:51,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560859807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:51,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:51,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:24:51,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041767913] [2022-11-02 20:24:51,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:51,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:24:51,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:51,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:24:51,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:24:51,007 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-11-02 20:24:51,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 81 transitions, 284 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:51,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:24:51,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-11-02 20:24:51,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:24:51,251 INFO L130 PetriNetUnfolder]: 316/863 cut-off events. [2022-11-02 20:24:51,252 INFO L131 PetriNetUnfolder]: For 517/540 co-relation queries the response was YES. [2022-11-02 20:24:51,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 863 events. 316/863 cut-off events. For 517/540 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5721 event pairs, 14 based on Foata normal form. 0/782 useless extension candidates. Maximal degree in co-relation 1801. Up to 213 conditions per place. [2022-11-02 20:24:51,261 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 29 selfloop transitions, 17 changer transitions 0/113 dead transitions. [2022-11-02 20:24:51,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 113 transitions, 444 flow [2022-11-02 20:24:51,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:24:51,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:24:51,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 798 transitions. [2022-11-02 20:24:51,268 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8673913043478261 [2022-11-02 20:24:51,268 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 798 transitions. [2022-11-02 20:24:51,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 798 transitions. [2022-11-02 20:24:51,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:24:51,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 798 transitions. [2022-11-02 20:24:51,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.8) internal successors, (798), 10 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:51,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:51,274 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:51,274 INFO L175 Difference]: Start difference. First operand has 116 places, 81 transitions, 284 flow. Second operand 10 states and 798 transitions. [2022-11-02 20:24:51,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 113 transitions, 444 flow [2022-11-02 20:24:51,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 113 transitions, 422 flow, removed 11 selfloop flow, removed 9 redundant places. [2022-11-02 20:24:51,280 INFO L231 Difference]: Finished difference. Result has 113 places, 96 transitions, 382 flow [2022-11-02 20:24:51,280 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=382, PETRI_PLACES=113, PETRI_TRANSITIONS=96} [2022-11-02 20:24:51,281 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 29 predicate places. [2022-11-02 20:24:51,281 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 96 transitions, 382 flow [2022-11-02 20:24:51,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:51,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:24:51,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:24:51,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:24:51,282 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:24:51,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:51,283 INFO L85 PathProgramCache]: Analyzing trace with hash -3064422, now seen corresponding path program 1 times [2022-11-02 20:24:51,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:51,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247174503] [2022-11-02 20:24:51,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:51,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:51,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:24:51,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:51,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247174503] [2022-11-02 20:24:51,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247174503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:51,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:51,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:24:51,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896306165] [2022-11-02 20:24:51,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:51,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:24:51,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:51,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:24:51,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:24:51,526 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-11-02 20:24:51,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 96 transitions, 382 flow. Second operand has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:51,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:24:51,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-11-02 20:24:51,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:24:51,862 INFO L130 PetriNetUnfolder]: 294/808 cut-off events. [2022-11-02 20:24:51,863 INFO L131 PetriNetUnfolder]: For 1751/1956 co-relation queries the response was YES. [2022-11-02 20:24:51,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2712 conditions, 808 events. 294/808 cut-off events. For 1751/1956 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5434 event pairs, 1 based on Foata normal form. 74/828 useless extension candidates. Maximal degree in co-relation 2693. Up to 308 conditions per place. [2022-11-02 20:24:51,871 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 26 selfloop transitions, 32 changer transitions 9/134 dead transitions. [2022-11-02 20:24:51,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 134 transitions, 752 flow [2022-11-02 20:24:51,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:24:51,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-02 20:24:51,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1038 transitions. [2022-11-02 20:24:51,874 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8678929765886287 [2022-11-02 20:24:51,874 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1038 transitions. [2022-11-02 20:24:51,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1038 transitions. [2022-11-02 20:24:51,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:24:51,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1038 transitions. [2022-11-02 20:24:51,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 79.84615384615384) internal successors, (1038), 13 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:51,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:51,882 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:51,882 INFO L175 Difference]: Start difference. First operand has 113 places, 96 transitions, 382 flow. Second operand 13 states and 1038 transitions. [2022-11-02 20:24:51,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 134 transitions, 752 flow [2022-11-02 20:24:51,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 134 transitions, 743 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-02 20:24:51,890 INFO L231 Difference]: Finished difference. Result has 127 places, 116 transitions, 616 flow [2022-11-02 20:24:51,891 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=616, PETRI_PLACES=127, PETRI_TRANSITIONS=116} [2022-11-02 20:24:51,891 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 43 predicate places. [2022-11-02 20:24:51,891 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 116 transitions, 616 flow [2022-11-02 20:24:51,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:51,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:24:51,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:24:51,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:24:51,893 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:24:51,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:51,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1134167343, now seen corresponding path program 1 times [2022-11-02 20:24:51,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:51,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168570447] [2022-11-02 20:24:51,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:51,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:51,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:52,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:24:52,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:52,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168570447] [2022-11-02 20:24:52,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168570447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:52,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:52,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:24:52,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004993993] [2022-11-02 20:24:52,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:52,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:24:52,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:52,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:24:52,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:24:52,106 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-11-02 20:24:52,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 116 transitions, 616 flow. Second operand has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:52,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:24:52,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-11-02 20:24:52,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:24:52,359 INFO L130 PetriNetUnfolder]: 201/873 cut-off events. [2022-11-02 20:24:52,360 INFO L131 PetriNetUnfolder]: For 2159/2277 co-relation queries the response was YES. [2022-11-02 20:24:52,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2751 conditions, 873 events. 201/873 cut-off events. For 2159/2277 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 6803 event pairs, 2 based on Foata normal form. 6/855 useless extension candidates. Maximal degree in co-relation 2729. Up to 241 conditions per place. [2022-11-02 20:24:52,366 INFO L137 encePairwiseOnDemand]: 86/92 looper letters, 17 selfloop transitions, 2 changer transitions 38/127 dead transitions. [2022-11-02 20:24:52,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 127 transitions, 714 flow [2022-11-02 20:24:52,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:24:52,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:24:52,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 550 transitions. [2022-11-02 20:24:52,369 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8540372670807453 [2022-11-02 20:24:52,369 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 550 transitions. [2022-11-02 20:24:52,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 550 transitions. [2022-11-02 20:24:52,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:24:52,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 550 transitions. [2022-11-02 20:24:52,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.57142857142857) internal successors, (550), 7 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:52,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:52,373 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:52,373 INFO L175 Difference]: Start difference. First operand has 127 places, 116 transitions, 616 flow. Second operand 7 states and 550 transitions. [2022-11-02 20:24:52,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 127 transitions, 714 flow [2022-11-02 20:24:52,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 127 transitions, 600 flow, removed 44 selfloop flow, removed 6 redundant places. [2022-11-02 20:24:52,395 INFO L231 Difference]: Finished difference. Result has 132 places, 84 transitions, 329 flow [2022-11-02 20:24:52,395 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=329, PETRI_PLACES=132, PETRI_TRANSITIONS=84} [2022-11-02 20:24:52,396 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 48 predicate places. [2022-11-02 20:24:52,396 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 84 transitions, 329 flow [2022-11-02 20:24:52,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:52,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:24:52,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:24:52,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:24:52,398 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:24:52,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:52,398 INFO L85 PathProgramCache]: Analyzing trace with hash 2044466291, now seen corresponding path program 2 times [2022-11-02 20:24:52,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:52,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866257918] [2022-11-02 20:24:52,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:52,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:52,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:24:52,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:52,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866257918] [2022-11-02 20:24:52,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866257918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:52,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:52,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:24:52,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445838066] [2022-11-02 20:24:52,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:52,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:24:52,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:52,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:24:52,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:24:52,588 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-11-02 20:24:52,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 84 transitions, 329 flow. Second operand has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:52,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:24:52,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-11-02 20:24:52,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:24:52,791 INFO L130 PetriNetUnfolder]: 49/297 cut-off events. [2022-11-02 20:24:52,791 INFO L131 PetriNetUnfolder]: For 481/520 co-relation queries the response was YES. [2022-11-02 20:24:52,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 297 events. 49/297 cut-off events. For 481/520 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1537 event pairs, 2 based on Foata normal form. 21/309 useless extension candidates. Maximal degree in co-relation 774. Up to 68 conditions per place. [2022-11-02 20:24:52,794 INFO L137 encePairwiseOnDemand]: 84/92 looper letters, 0 selfloop transitions, 0 changer transitions 85/85 dead transitions. [2022-11-02 20:24:52,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 85 transitions, 385 flow [2022-11-02 20:24:52,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:24:52,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 20:24:52,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 854 transitions. [2022-11-02 20:24:52,797 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8438735177865613 [2022-11-02 20:24:52,798 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 854 transitions. [2022-11-02 20:24:52,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 854 transitions. [2022-11-02 20:24:52,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:24:52,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 854 transitions. [2022-11-02 20:24:52,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 77.63636363636364) internal successors, (854), 11 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:52,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:52,805 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:52,806 INFO L175 Difference]: Start difference. First operand has 132 places, 84 transitions, 329 flow. Second operand 11 states and 854 transitions. [2022-11-02 20:24:52,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 85 transitions, 385 flow [2022-11-02 20:24:52,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 85 transitions, 325 flow, removed 15 selfloop flow, removed 14 redundant places. [2022-11-02 20:24:52,810 INFO L231 Difference]: Finished difference. Result has 105 places, 0 transitions, 0 flow [2022-11-02 20:24:52,810 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=105, PETRI_TRANSITIONS=0} [2022-11-02 20:24:52,811 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 21 predicate places. [2022-11-02 20:24:52,811 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 0 transitions, 0 flow [2022-11-02 20:24:52,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:52,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-02 20:24:52,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-02 20:24:52,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-02 20:24:52,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-02 20:24:52,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:24:52,816 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:24:52,820 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-02 20:24:52,820 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:24:52,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:24:52 BasicIcfg [2022-11-02 20:24:52,826 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:24:52,826 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:24:52,827 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:24:52,827 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:24:52,827 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:24:46" (3/4) ... [2022-11-02 20:24:52,831 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 20:24:52,838 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-02 20:24:52,838 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-02 20:24:52,838 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-02 20:24:52,843 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-02 20:24:52,843 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-02 20:24:52,844 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 20:24:52,844 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 20:24:52,888 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c0348e-a508-4df4-965b-ebddc8ffd68e/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:24:52,888 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:24:52,889 INFO L158 Benchmark]: Toolchain (without parser) took 7678.42ms. Allocated memory was 104.9MB in the beginning and 205.5MB in the end (delta: 100.7MB). Free memory was 64.2MB in the beginning and 166.7MB in the end (delta: -102.4MB). Peak memory consumption was 50.5kB. Max. memory is 16.1GB. [2022-11-02 20:24:52,889 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 104.9MB. Free memory was 81.9MB in the beginning and 81.8MB in the end (delta: 48.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:24:52,890 INFO L158 Benchmark]: CACSL2BoogieTranslator took 578.81ms. Allocated memory is still 104.9MB. Free memory was 64.0MB in the beginning and 71.0MB in the end (delta: -7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:24:52,890 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.79ms. Allocated memory is still 104.9MB. Free memory was 71.0MB in the beginning and 68.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:24:52,890 INFO L158 Benchmark]: Boogie Preprocessor took 45.94ms. Allocated memory is still 104.9MB. Free memory was 68.9MB in the beginning and 67.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:24:52,891 INFO L158 Benchmark]: RCFGBuilder took 534.36ms. Allocated memory is still 104.9MB. Free memory was 67.4MB in the beginning and 53.9MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 20:24:52,891 INFO L158 Benchmark]: TraceAbstraction took 6379.08ms. Allocated memory was 104.9MB in the beginning and 205.5MB in the end (delta: 100.7MB). Free memory was 53.3MB in the beginning and 169.8MB in the end (delta: -116.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:24:52,892 INFO L158 Benchmark]: Witness Printer took 61.70ms. Allocated memory is still 205.5MB. Free memory was 169.8MB in the beginning and 166.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:24:52,894 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 104.9MB. Free memory was 81.9MB in the beginning and 81.8MB in the end (delta: 48.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 578.81ms. Allocated memory is still 104.9MB. Free memory was 64.0MB in the beginning and 71.0MB in the end (delta: -7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.79ms. Allocated memory is still 104.9MB. Free memory was 71.0MB in the beginning and 68.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.94ms. Allocated memory is still 104.9MB. Free memory was 68.9MB in the beginning and 67.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 534.36ms. Allocated memory is still 104.9MB. Free memory was 67.4MB in the beginning and 53.9MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6379.08ms. Allocated memory was 104.9MB in the beginning and 205.5MB in the end (delta: 100.7MB). Free memory was 53.3MB in the beginning and 169.8MB in the end (delta: -116.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 61.70ms. Allocated memory is still 205.5MB. Free memory was 169.8MB in the beginning and 166.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.2s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 336 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 336 mSDsluCounter, 475 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 471 mSDsCounter, 75 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 510 IncrementalHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 75 mSolverCounterUnsat, 119 mSDtfsCounter, 510 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=616occurred in iteration=7, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 543 NumberOfCodeBlocks, 543 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 534 ConstructedInterpolants, 0 QuantifiedInterpolants, 2064 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-02 20:24:52,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c0348e-a508-4df4-965b-ebddc8ffd68e/bin/uautomizer-Dbtcem3rbc/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