./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c706fa40-2c9e-4804-bbbe-ca3fc25ed199/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c706fa40-2c9e-4804-bbbe-ca3fc25ed199/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c706fa40-2c9e-4804-bbbe-ca3fc25ed199/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c706fa40-2c9e-4804-bbbe-ca3fc25ed199/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c706fa40-2c9e-4804-bbbe-ca3fc25ed199/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c706fa40-2c9e-4804-bbbe-ca3fc25ed199/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 13:36:50,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:36:50,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:36:50,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:36:50,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:36:50,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:36:50,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:36:50,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:36:50,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:36:50,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:36:50,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:36:50,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:36:50,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:36:50,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:36:50,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:36:50,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:36:50,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:36:50,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:36:50,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:36:50,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:36:50,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:36:50,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:36:50,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:36:50,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:36:50,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:36:50,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:36:50,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:36:50,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:36:50,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:36:50,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:36:50,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:36:50,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:36:50,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:36:50,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:36:50,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:36:50,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:36:50,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:36:50,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:36:50,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:36:50,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:36:50,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:36:50,919 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c706fa40-2c9e-4804-bbbe-ca3fc25ed199/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 13:36:50,940 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:36:50,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:36:50,940 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:36:50,940 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:36:50,941 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:36:50,941 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:36:50,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:36:50,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:36:50,942 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:36:50,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:36:50,943 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:36:50,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:36:50,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:36:50,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:36:50,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:36:50,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:36:50,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:36:50,944 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:36:50,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:36:50,944 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:36:50,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:36:50,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:36:50,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:36:50,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:36:50,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:36:50,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:36:50,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:36:50,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:36:50,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:36:50,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:36:50,946 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:36:50,947 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:36:50,947 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:36:50,947 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:36:50,947 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:36:50,947 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c706fa40-2c9e-4804-bbbe-ca3fc25ed199/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c706fa40-2c9e-4804-bbbe-ca3fc25ed199/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 [2022-12-13 13:36:51,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:36:51,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:36:51,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:36:51,151 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:36:51,151 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:36:51,152 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c706fa40-2c9e-4804-bbbe-ca3fc25ed199/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2022-12-13 13:36:53,775 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:36:53,978 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:36:53,978 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c706fa40-2c9e-4804-bbbe-ca3fc25ed199/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2022-12-13 13:36:53,989 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c706fa40-2c9e-4804-bbbe-ca3fc25ed199/bin/uautomizer-uyxdKDjOR8/data/59c3318a7/4473201bde5244c2808518c54ef6e978/FLAG0637025ff [2022-12-13 13:36:53,999 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c706fa40-2c9e-4804-bbbe-ca3fc25ed199/bin/uautomizer-uyxdKDjOR8/data/59c3318a7/4473201bde5244c2808518c54ef6e978 [2022-12-13 13:36:54,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:36:54,002 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:36:54,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:36:54,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:36:54,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:36:54,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:36:54" (1/1) ... [2022-12-13 13:36:54,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2142682c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:36:54, skipping insertion in model container [2022-12-13 13:36:54,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:36:54" (1/1) ... [2022-12-13 13:36:54,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:36:54,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:36:54,156 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c706fa40-2c9e-4804-bbbe-ca3fc25ed199/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2022-12-13 13:36:54,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:36:54,268 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:36:54,276 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c706fa40-2c9e-4804-bbbe-ca3fc25ed199/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2022-12-13 13:36:54,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:36:54,313 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:36:54,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:36:54 WrapperNode [2022-12-13 13:36:54,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:36:54,314 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:36:54,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:36:54,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:36:54,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:36:54" (1/1) ... [2022-12-13 13:36:54,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:36:54" (1/1) ... [2022-12-13 13:36:54,342 INFO L138 Inliner]: procedures = 165, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 97 [2022-12-13 13:36:54,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:36:54,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:36:54,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:36:54,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:36:54,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:36:54" (1/1) ... [2022-12-13 13:36:54,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:36:54" (1/1) ... [2022-12-13 13:36:54,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:36:54" (1/1) ... [2022-12-13 13:36:54,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:36:54" (1/1) ... [2022-12-13 13:36:54,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:36:54" (1/1) ... [2022-12-13 13:36:54,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:36:54" (1/1) ... [2022-12-13 13:36:54,357 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:36:54" (1/1) ... [2022-12-13 13:36:54,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:36:54" (1/1) ... [2022-12-13 13:36:54,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:36:54,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:36:54,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:36:54,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:36:54,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:36:54" (1/1) ... [2022-12-13 13:36:54,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:36:54,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c706fa40-2c9e-4804-bbbe-ca3fc25ed199/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:36:54,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c706fa40-2c9e-4804-bbbe-ca3fc25ed199/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:36:54,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c706fa40-2c9e-4804-bbbe-ca3fc25ed199/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:36:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2022-12-13 13:36:54,414 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2022-12-13 13:36:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:36:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 13:36:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:36:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:36:54,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:36:54,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:36:54,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:36:54,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:36:54,416 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 13:36:54,511 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:36:54,512 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:36:54,651 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:36:54,657 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:36:54,657 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 13:36:54,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:36:54 BoogieIcfgContainer [2022-12-13 13:36:54,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:36:54,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:36:54,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:36:54,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:36:54,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:36:54" (1/3) ... [2022-12-13 13:36:54,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d6fca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:36:54, skipping insertion in model container [2022-12-13 13:36:54,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:36:54" (2/3) ... [2022-12-13 13:36:54,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d6fca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:36:54, skipping insertion in model container [2022-12-13 13:36:54,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:36:54" (3/3) ... [2022-12-13 13:36:54,665 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2022-12-13 13:36:54,677 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 13:36:54,684 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:36:54,684 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 13:36:54,684 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 13:36:54,726 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 13:36:54,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 117 transitions, 239 flow [2022-12-13 13:36:54,793 INFO L130 PetriNetUnfolder]: 10/116 cut-off events. [2022-12-13 13:36:54,793 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:36:54,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 116 events. 10/116 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 183 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2022-12-13 13:36:54,798 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 117 transitions, 239 flow [2022-12-13 13:36:54,801 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 116 transitions, 235 flow [2022-12-13 13:36:54,804 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 13:36:54,812 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 116 transitions, 235 flow [2022-12-13 13:36:54,814 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 116 transitions, 235 flow [2022-12-13 13:36:54,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 116 transitions, 235 flow [2022-12-13 13:36:54,838 INFO L130 PetriNetUnfolder]: 10/116 cut-off events. [2022-12-13 13:36:54,838 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:36:54,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 116 events. 10/116 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 182 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2022-12-13 13:36:54,840 INFO L119 LiptonReduction]: Number of co-enabled transitions 2976 [2022-12-13 13:36:57,190 INFO L134 LiptonReduction]: Checked pairs total: 5274 [2022-12-13 13:36:57,190 INFO L136 LiptonReduction]: Total number of compositions: 107 [2022-12-13 13:36:57,201 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:36:57,205 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;@74ea33d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:36:57,205 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-13 13:36:57,208 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2022-12-13 13:36:57,208 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:36:57,209 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:36:57,209 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 13:36:57,209 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-13 13:36:57,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:36:57,213 INFO L85 PathProgramCache]: Analyzing trace with hash 856668644, now seen corresponding path program 1 times [2022-12-13 13:36:57,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:36:57,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032517342] [2022-12-13 13:36:57,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:36:57,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:36:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:57,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:36:57,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:36:57,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032517342] [2022-12-13 13:36:57,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032517342] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:36:57,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:36:57,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:36:57,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622941476] [2022-12-13 13:36:57,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:36:57,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:36:57,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:36:57,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:36:57,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:36:57,479 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 224 [2022-12-13 13:36:57,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 26 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:57,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:36:57,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 224 [2022-12-13 13:36:57,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:36:57,535 INFO L130 PetriNetUnfolder]: 88/185 cut-off events. [2022-12-13 13:36:57,535 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:36:57,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 185 events. 88/185 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 586 event pairs, 34 based on Foata normal form. 7/157 useless extension candidates. Maximal degree in co-relation 342. Up to 121 conditions per place. [2022-12-13 13:36:57,537 INFO L137 encePairwiseOnDemand]: 216/224 looper letters, 24 selfloop transitions, 4 changer transitions 0/33 dead transitions. [2022-12-13 13:36:57,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 33 transitions, 125 flow [2022-12-13 13:36:57,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:36:57,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:36:57,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 336 transitions. [2022-12-13 13:36:57,547 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-12-13 13:36:57,548 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 336 transitions. [2022-12-13 13:36:57,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 336 transitions. [2022-12-13 13:36:57,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:36:57,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 336 transitions. [2022-12-13 13:36:57,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:57,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:57,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:57,559 INFO L175 Difference]: Start difference. First operand has 25 places, 26 transitions, 55 flow. Second operand 3 states and 336 transitions. [2022-12-13 13:36:57,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 33 transitions, 125 flow [2022-12-13 13:36:57,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 33 transitions, 124 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:36:57,563 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 82 flow [2022-12-13 13:36:57,564 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2022-12-13 13:36:57,567 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2022-12-13 13:36:57,567 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 82 flow [2022-12-13 13:36:57,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:57,567 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:36:57,567 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:36:57,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:36:57,568 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-13 13:36:57,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:36:57,568 INFO L85 PathProgramCache]: Analyzing trace with hash 289463117, now seen corresponding path program 1 times [2022-12-13 13:36:57,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:36:57,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468484292] [2022-12-13 13:36:57,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:36:57,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:36:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:57,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:36:57,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:36:57,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468484292] [2022-12-13 13:36:57,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468484292] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:36:57,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:36:57,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:36:57,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137435453] [2022-12-13 13:36:57,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:36:57,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:36:57,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:36:57,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:36:57,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:36:57,669 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 224 [2022-12-13 13:36:57,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:57,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:36:57,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 224 [2022-12-13 13:36:57,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:36:57,706 INFO L130 PetriNetUnfolder]: 22/70 cut-off events. [2022-12-13 13:36:57,706 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-12-13 13:36:57,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 70 events. 22/70 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 141 event pairs, 1 based on Foata normal form. 8/72 useless extension candidates. Maximal degree in co-relation 139. Up to 38 conditions per place. [2022-12-13 13:36:57,707 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 12 selfloop transitions, 6 changer transitions 3/29 dead transitions. [2022-12-13 13:36:57,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 29 transitions, 128 flow [2022-12-13 13:36:57,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:36:57,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:36:57,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 325 transitions. [2022-12-13 13:36:57,709 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4836309523809524 [2022-12-13 13:36:57,709 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 325 transitions. [2022-12-13 13:36:57,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 325 transitions. [2022-12-13 13:36:57,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:36:57,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 325 transitions. [2022-12-13 13:36:57,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:57,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:57,712 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:57,712 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 82 flow. Second operand 3 states and 325 transitions. [2022-12-13 13:36:57,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 29 transitions, 128 flow [2022-12-13 13:36:57,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:36:57,713 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 78 flow [2022-12-13 13:36:57,713 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2022-12-13 13:36:57,714 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2022-12-13 13:36:57,714 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 78 flow [2022-12-13 13:36:57,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:57,714 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:36:57,714 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:36:57,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:36:57,715 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-13 13:36:57,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:36:57,715 INFO L85 PathProgramCache]: Analyzing trace with hash 323353070, now seen corresponding path program 1 times [2022-12-13 13:36:57,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:36:57,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119290963] [2022-12-13 13:36:57,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:36:57,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:36:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:57,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:36:57,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:36:57,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119290963] [2022-12-13 13:36:57,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119290963] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:36:57,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:36:57,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:36:57,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811265009] [2022-12-13 13:36:57,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:36:57,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:36:57,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:36:57,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:36:57,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:36:57,810 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 224 [2022-12-13 13:36:57,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:57,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:36:57,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 224 [2022-12-13 13:36:57,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:36:57,873 INFO L130 PetriNetUnfolder]: 25/82 cut-off events. [2022-12-13 13:36:57,873 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 13:36:57,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 82 events. 25/82 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 154 event pairs, 11 based on Foata normal form. 4/85 useless extension candidates. Maximal degree in co-relation 195. Up to 31 conditions per place. [2022-12-13 13:36:57,874 INFO L137 encePairwiseOnDemand]: 214/224 looper letters, 24 selfloop transitions, 8 changer transitions 3/37 dead transitions. [2022-12-13 13:36:57,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 37 transitions, 184 flow [2022-12-13 13:36:57,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:36:57,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 13:36:57,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 614 transitions. [2022-12-13 13:36:57,877 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4568452380952381 [2022-12-13 13:36:57,877 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 614 transitions. [2022-12-13 13:36:57,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 614 transitions. [2022-12-13 13:36:57,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:36:57,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 614 transitions. [2022-12-13 13:36:57,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 102.33333333333333) internal successors, (614), 6 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:57,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:57,888 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:57,888 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 78 flow. Second operand 6 states and 614 transitions. [2022-12-13 13:36:57,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 37 transitions, 184 flow [2022-12-13 13:36:57,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 37 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:36:57,890 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 122 flow [2022-12-13 13:36:57,890 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=122, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2022-12-13 13:36:57,891 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2022-12-13 13:36:57,891 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 122 flow [2022-12-13 13:36:57,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:57,892 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:36:57,892 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:36:57,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:36:57,892 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-13 13:36:57,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:36:57,893 INFO L85 PathProgramCache]: Analyzing trace with hash 756232097, now seen corresponding path program 2 times [2022-12-13 13:36:57,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:36:57,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620674879] [2022-12-13 13:36:57,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:36:57,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:36:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:58,004 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:36:58,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:36:58,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620674879] [2022-12-13 13:36:58,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620674879] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:36:58,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617667432] [2022-12-13 13:36:58,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:36:58,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:36:58,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c706fa40-2c9e-4804-bbbe-ca3fc25ed199/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:36:58,007 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c706fa40-2c9e-4804-bbbe-ca3fc25ed199/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:36:58,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c706fa40-2c9e-4804-bbbe-ca3fc25ed199/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:36:58,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:36:58,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:36:58,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 13:36:58,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:36:58,145 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:36:58,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:36:58,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617667432] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:36:58,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:36:58,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2022-12-13 13:36:58,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870344063] [2022-12-13 13:36:58,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:36:58,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:36:58,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:36:58,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:36:58,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:36:58,183 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 224 [2022-12-13 13:36:58,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 122 flow. Second operand has 7 states, 7 states have (on average 98.28571428571429) internal successors, (688), 7 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:58,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:36:58,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 224 [2022-12-13 13:36:58,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:36:58,303 INFO L130 PetriNetUnfolder]: 36/116 cut-off events. [2022-12-13 13:36:58,303 INFO L131 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2022-12-13 13:36:58,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 116 events. 36/116 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 281 event pairs, 13 based on Foata normal form. 2/117 useless extension candidates. Maximal degree in co-relation 311. Up to 43 conditions per place. [2022-12-13 13:36:58,305 INFO L137 encePairwiseOnDemand]: 216/224 looper letters, 34 selfloop transitions, 13 changer transitions 3/52 dead transitions. [2022-12-13 13:36:58,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 52 transitions, 321 flow [2022-12-13 13:36:58,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:36:58,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 13:36:58,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 912 transitions. [2022-12-13 13:36:58,308 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2022-12-13 13:36:58,309 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 912 transitions. [2022-12-13 13:36:58,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 912 transitions. [2022-12-13 13:36:58,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:36:58,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 912 transitions. [2022-12-13 13:36:58,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 101.33333333333333) internal successors, (912), 9 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:58,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:58,317 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:58,317 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 122 flow. Second operand 9 states and 912 transitions. [2022-12-13 13:36:58,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 52 transitions, 321 flow [2022-12-13 13:36:58,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 52 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:36:58,320 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 229 flow [2022-12-13 13:36:58,320 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=229, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2022-12-13 13:36:58,321 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 20 predicate places. [2022-12-13 13:36:58,321 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 229 flow [2022-12-13 13:36:58,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 98.28571428571429) internal successors, (688), 7 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:58,322 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:36:58,322 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:36:58,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c706fa40-2c9e-4804-bbbe-ca3fc25ed199/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:36:58,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c706fa40-2c9e-4804-bbbe-ca3fc25ed199/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-13 13:36:58,524 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-13 13:36:58,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:36:58,526 INFO L85 PathProgramCache]: Analyzing trace with hash -78048674, now seen corresponding path program 1 times [2022-12-13 13:36:58,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:36:58,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519675060] [2022-12-13 13:36:58,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:36:58,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:36:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:58,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:36:58,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:36:58,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519675060] [2022-12-13 13:36:58,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519675060] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:36:58,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:36:58,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:36:58,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037817877] [2022-12-13 13:36:58,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:36:58,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:36:58,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:36:58,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:36:58,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:36:58,777 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 224 [2022-12-13 13:36:58,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 229 flow. Second operand has 6 states, 6 states have (on average 98.83333333333333) internal successors, (593), 6 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:58,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:36:58,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 224 [2022-12-13 13:36:58,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:36:58,856 INFO L130 PetriNetUnfolder]: 43/132 cut-off events. [2022-12-13 13:36:58,857 INFO L131 PetriNetUnfolder]: For 212/212 co-relation queries the response was YES. [2022-12-13 13:36:58,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 132 events. 43/132 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 316 event pairs, 13 based on Foata normal form. 2/133 useless extension candidates. Maximal degree in co-relation 412. Up to 44 conditions per place. [2022-12-13 13:36:58,858 INFO L137 encePairwiseOnDemand]: 216/224 looper letters, 27 selfloop transitions, 15 changer transitions 7/54 dead transitions. [2022-12-13 13:36:58,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 54 transitions, 407 flow [2022-12-13 13:36:58,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:36:58,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 13:36:58,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 618 transitions. [2022-12-13 13:36:58,861 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45982142857142855 [2022-12-13 13:36:58,861 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 618 transitions. [2022-12-13 13:36:58,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 618 transitions. [2022-12-13 13:36:58,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:36:58,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 618 transitions. [2022-12-13 13:36:58,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 103.0) internal successors, (618), 6 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:58,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:58,866 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:58,866 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 229 flow. Second operand 6 states and 618 transitions. [2022-12-13 13:36:58,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 54 transitions, 407 flow [2022-12-13 13:36:58,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 54 transitions, 389 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-12-13 13:36:58,870 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 302 flow [2022-12-13 13:36:58,870 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=302, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2022-12-13 13:36:58,871 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 24 predicate places. [2022-12-13 13:36:58,871 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 302 flow [2022-12-13 13:36:58,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.83333333333333) internal successors, (593), 6 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:58,872 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:36:58,872 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:36:58,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 13:36:58,872 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-13 13:36:58,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:36:58,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1946036787, now seen corresponding path program 2 times [2022-12-13 13:36:58,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:36:58,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356458620] [2022-12-13 13:36:58,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:36:58,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:36:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:58,935 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:36:58,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:36:58,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356458620] [2022-12-13 13:36:58,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356458620] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:36:58,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:36:58,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:36:58,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540640859] [2022-12-13 13:36:58,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:36:58,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:36:58,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:36:58,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:36:58,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:36:58,965 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 224 [2022-12-13 13:36:58,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 302 flow. Second operand has 6 states, 6 states have (on average 96.83333333333333) internal successors, (581), 6 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:58,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:36:58,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 224 [2022-12-13 13:36:58,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:36:59,039 INFO L130 PetriNetUnfolder]: 40/123 cut-off events. [2022-12-13 13:36:59,039 INFO L131 PetriNetUnfolder]: For 287/287 co-relation queries the response was YES. [2022-12-13 13:36:59,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 123 events. 40/123 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 293 event pairs, 16 based on Foata normal form. 2/124 useless extension candidates. Maximal degree in co-relation 427. Up to 71 conditions per place. [2022-12-13 13:36:59,040 INFO L137 encePairwiseOnDemand]: 215/224 looper letters, 0 selfloop transitions, 0 changer transitions 44/44 dead transitions. [2022-12-13 13:36:59,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 44 transitions, 398 flow [2022-12-13 13:36:59,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:36:59,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 13:36:59,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 680 transitions. [2022-12-13 13:36:59,042 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4336734693877551 [2022-12-13 13:36:59,042 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 680 transitions. [2022-12-13 13:36:59,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 680 transitions. [2022-12-13 13:36:59,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:36:59,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 680 transitions. [2022-12-13 13:36:59,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 97.14285714285714) internal successors, (680), 7 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:59,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 224.0) internal successors, (1792), 8 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:59,046 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 224.0) internal successors, (1792), 8 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:59,046 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 302 flow. Second operand 7 states and 680 transitions. [2022-12-13 13:36:59,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 44 transitions, 398 flow [2022-12-13 13:36:59,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 44 transitions, 368 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-12-13 13:36:59,048 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2022-12-13 13:36:59,048 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2022-12-13 13:36:59,048 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 24 predicate places. [2022-12-13 13:36:59,049 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2022-12-13 13:36:59,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.83333333333333) internal successors, (581), 6 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:36:59,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-12-13 13:36:59,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-12-13 13:36:59,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-12-13 13:36:59,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-12-13 13:36:59,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-12-13 13:36:59,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 13:36:59,052 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2022-12-13 13:36:59,056 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 13:36:59,056 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 13:36:59,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:36:59 BasicIcfg [2022-12-13 13:36:59,059 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 13:36:59,059 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 13:36:59,059 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 13:36:59,059 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 13:36:59,060 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:36:54" (3/4) ... [2022-12-13 13:36:59,062 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 13:36:59,066 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure worker [2022-12-13 13:36:59,068 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-12-13 13:36:59,068 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-13 13:36:59,069 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 13:36:59,069 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 13:36:59,091 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c706fa40-2c9e-4804-bbbe-ca3fc25ed199/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 13:36:59,091 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 13:36:59,092 INFO L158 Benchmark]: Toolchain (without parser) took 5089.37ms. Allocated memory was 134.2MB in the beginning and 163.6MB in the end (delta: 29.4MB). Free memory was 99.0MB in the beginning and 95.5MB in the end (delta: 3.6MB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. [2022-12-13 13:36:59,092 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 134.2MB. Free memory is still 76.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:36:59,092 INFO L158 Benchmark]: CACSL2BoogieTranslator took 310.82ms. Allocated memory is still 134.2MB. Free memory was 99.0MB in the beginning and 79.7MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 13:36:59,092 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.99ms. Allocated memory is still 134.2MB. Free memory was 79.7MB in the beginning and 77.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:36:59,092 INFO L158 Benchmark]: Boogie Preprocessor took 17.00ms. Allocated memory is still 134.2MB. Free memory was 77.2MB in the beginning and 76.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:36:59,093 INFO L158 Benchmark]: RCFGBuilder took 298.43ms. Allocated memory was 134.2MB in the beginning and 163.6MB in the end (delta: 29.4MB). Free memory was 76.0MB in the beginning and 132.0MB in the end (delta: -56.0MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. [2022-12-13 13:36:59,093 INFO L158 Benchmark]: TraceAbstraction took 4398.22ms. Allocated memory is still 163.6MB. Free memory was 131.3MB in the beginning and 97.6MB in the end (delta: 33.8MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. [2022-12-13 13:36:59,093 INFO L158 Benchmark]: Witness Printer took 32.17ms. Allocated memory is still 163.6MB. Free memory was 97.6MB in the beginning and 95.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:36:59,094 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 134.2MB. Free memory is still 76.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 310.82ms. Allocated memory is still 134.2MB. Free memory was 99.0MB in the beginning and 79.7MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.99ms. Allocated memory is still 134.2MB. Free memory was 79.7MB in the beginning and 77.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.00ms. Allocated memory is still 134.2MB. Free memory was 77.2MB in the beginning and 76.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 298.43ms. Allocated memory was 134.2MB in the beginning and 163.6MB in the end (delta: 29.4MB). Free memory was 76.0MB in the beginning and 132.0MB in the end (delta: -56.0MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. * TraceAbstraction took 4398.22ms. Allocated memory is still 163.6MB. Free memory was 131.3MB in the beginning and 97.6MB in the end (delta: 33.8MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. * Witness Printer took 32.17ms. Allocated memory is still 163.6MB. Free memory was 97.6MB in the beginning and 95.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 110 PlacesBefore, 25 PlacesAfterwards, 116 TransitionsBefore, 26 TransitionsAfterwards, 2976 CoEnabledTransitionPairs, 7 FixpointIterations, 35 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 5 ChoiceCompositions, 107 TotalNumberOfCompositions, 5274 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4081, independent: 3854, independent conditional: 0, independent unconditional: 3854, dependent: 227, dependent conditional: 0, dependent unconditional: 227, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1624, independent: 1586, independent conditional: 0, independent unconditional: 1586, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4081, independent: 2268, independent conditional: 0, independent unconditional: 2268, dependent: 189, dependent conditional: 0, dependent unconditional: 189, unknown: 1624, unknown conditional: 0, unknown unconditional: 1624] , Statistics on independence cache: Total cache size (in pairs): 114, Positive cache size: 97, Positive conditional cache size: 0, Positive unconditional cache size: 97, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 3 procedures, 151 locations, 5 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: 4.3s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 322 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 222 mSDsluCounter, 77 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 61 mSDsCounter, 62 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 694 IncrementalHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 62 mSolverCounterUnsat, 16 mSDtfsCounter, 694 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=302occurred in iteration=5, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 253 SizeOfPredicates, 4 NumberOfNonLiveVariables, 151 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 15/19 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 13:36:59,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c706fa40-2c9e-4804-bbbe-ca3fc25ed199/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE