./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_fcbfb4bd-2461-4138-9b80-6c9f38056b3d/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcbfb4bd-2461-4138-9b80-6c9f38056b3d/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcbfb4bd-2461-4138-9b80-6c9f38056b3d/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcbfb4bd-2461-4138-9b80-6c9f38056b3d/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcbfb4bd-2461-4138-9b80-6c9f38056b3d/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcbfb4bd-2461-4138-9b80-6c9f38056b3d/bin/uautomizer-TMbwUNV5ro --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 6883737711af32a6a824eca7af237353e2fdaf7712a6b3c22083c0d47b565ee7 --- 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-8393723 [2022-11-18 20:12:27,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:12:27,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:12:27,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:12:27,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:12:27,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:12:27,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:12:27,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:12:27,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:12:27,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:12:27,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:12:27,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:12:27,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:12:27,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:12:27,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:12:27,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:12:27,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:12:27,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:12:27,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:12:27,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:12:27,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:12:27,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:12:27,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:12:27,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:12:27,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:12:27,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:12:27,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:12:27,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:12:27,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:12:27,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:12:27,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:12:27,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:12:27,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:12:27,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:12:27,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:12:27,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:12:27,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:12:27,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:12:27,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:12:27,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:12:27,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:12:27,971 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcbfb4bd-2461-4138-9b80-6c9f38056b3d/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:12:28,013 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:12:28,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:12:28,015 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:12:28,015 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:12:28,017 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:12:28,017 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:12:28,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:12:28,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:12:28,018 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:12:28,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:12:28,019 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:12:28,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:12:28,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:12:28,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:12:28,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:12:28,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:12:28,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:12:28,021 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:12:28,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:12:28,021 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:12:28,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:12:28,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:12:28,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:12:28,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:12:28,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:12:28,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:12:28,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:12:28,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:12:28,023 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:12:28,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:12:28,024 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:12:28,024 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:12:28,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:12:28,024 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcbfb4bd-2461-4138-9b80-6c9f38056b3d/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcbfb4bd-2461-4138-9b80-6c9f38056b3d/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6883737711af32a6a824eca7af237353e2fdaf7712a6b3c22083c0d47b565ee7 [2022-11-18 20:12:28,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:12:28,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:12:28,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:12:28,386 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:12:28,387 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:12:28,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcbfb4bd-2461-4138-9b80-6c9f38056b3d/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2022-11-18 20:12:28,466 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcbfb4bd-2461-4138-9b80-6c9f38056b3d/bin/uautomizer-TMbwUNV5ro/data/0a28ea208/7531d7cd6bb44fcda450337c53f71652/FLAGf74ed3a44 [2022-11-18 20:12:29,069 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:12:29,069 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcbfb4bd-2461-4138-9b80-6c9f38056b3d/sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2022-11-18 20:12:29,082 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcbfb4bd-2461-4138-9b80-6c9f38056b3d/bin/uautomizer-TMbwUNV5ro/data/0a28ea208/7531d7cd6bb44fcda450337c53f71652/FLAGf74ed3a44 [2022-11-18 20:12:29,269 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcbfb4bd-2461-4138-9b80-6c9f38056b3d/bin/uautomizer-TMbwUNV5ro/data/0a28ea208/7531d7cd6bb44fcda450337c53f71652 [2022-11-18 20:12:29,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:12:29,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:12:29,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:12:29,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:12:29,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:12:29,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:12:29" (1/1) ... [2022-11-18 20:12:29,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6828f797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:29, skipping insertion in model container [2022-11-18 20:12:29,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:12:29" (1/1) ... [2022-11-18 20:12:29,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:12:29,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:12:29,530 WARN L234 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_fcbfb4bd-2461-4138-9b80-6c9f38056b3d/sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2022-11-18 20:12:29,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:12:29,755 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:12:29,772 WARN L234 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_fcbfb4bd-2461-4138-9b80-6c9f38056b3d/sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2022-11-18 20:12:29,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:12:29,847 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:12:29,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:29 WrapperNode [2022-11-18 20:12:29,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:12:29,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:12:29,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:12:29,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:12:29,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:29" (1/1) ... [2022-11-18 20:12:29,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:29" (1/1) ... [2022-11-18 20:12:29,903 INFO L138 Inliner]: procedures = 165, calls = 42, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 139 [2022-11-18 20:12:29,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:12:29,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:12:29,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:12:29,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:12:29,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:29" (1/1) ... [2022-11-18 20:12:29,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:29" (1/1) ... [2022-11-18 20:12:29,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:29" (1/1) ... [2022-11-18 20:12:29,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:29" (1/1) ... [2022-11-18 20:12:29,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:29" (1/1) ... [2022-11-18 20:12:29,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:29" (1/1) ... [2022-11-18 20:12:29,945 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:29" (1/1) ... [2022-11-18 20:12:29,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:29" (1/1) ... [2022-11-18 20:12:29,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:12:29,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:12:29,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:12:29,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:12:29,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:29" (1/1) ... [2022-11-18 20:12:29,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:12:29,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcbfb4bd-2461-4138-9b80-6c9f38056b3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:12:29,981 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcbfb4bd-2461-4138-9b80-6c9f38056b3d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:12:29,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcbfb4bd-2461-4138-9b80-6c9f38056b3d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:12:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:12:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:12:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:12:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:12:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 20:12:30,028 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 20:12:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:12:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:12:30,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:12:30,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:12:30,031 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:12:30,169 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:12:30,171 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:12:30,590 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:12:30,601 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:12:30,601 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:12:30,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:12:30 BoogieIcfgContainer [2022-11-18 20:12:30,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:12:30,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:12:30,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:12:30,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:12:30,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:12:29" (1/3) ... [2022-11-18 20:12:30,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521660e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:12:30, skipping insertion in model container [2022-11-18 20:12:30,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:29" (2/3) ... [2022-11-18 20:12:30,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521660e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:12:30, skipping insertion in model container [2022-11-18 20:12:30,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:12:30" (3/3) ... [2022-11-18 20:12:30,621 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2022-11-18 20:12:30,632 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:12:30,645 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:12:30,646 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-18 20:12:30,646 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:12:30,766 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 20:12:30,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 183 transitions, 371 flow [2022-11-18 20:12:30,957 INFO L130 PetriNetUnfolder]: 8/186 cut-off events. [2022-11-18 20:12:30,959 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:12:30,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 186 events. 8/186 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 163 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 136. Up to 2 conditions per place. [2022-11-18 20:12:30,973 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 183 transitions, 371 flow [2022-11-18 20:12:30,980 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 181 transitions, 365 flow [2022-11-18 20:12:30,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:12:31,005 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;@18a040b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:12:31,005 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-18 20:12:31,032 INFO L130 PetriNetUnfolder]: 1/96 cut-off events. [2022-11-18 20:12:31,032 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:12:31,032 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:12:31,033 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:31,034 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-18 20:12:31,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:31,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1096956312, now seen corresponding path program 1 times [2022-11-18 20:12:31,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:31,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119673478] [2022-11-18 20:12:31,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:31,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:31,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:31,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:31,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119673478] [2022-11-18 20:12:31,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119673478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:12:31,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:12:31,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:12:31,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484551491] [2022-11-18 20:12:31,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:12:31,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:12:31,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:31,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:12:31,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:12:31,911 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 183 [2022-11-18 20:12:31,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 181 transitions, 365 flow. Second operand has 8 states, 8 states have (on average 146.5) internal successors, (1172), 8 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:31,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:12:31,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 183 [2022-11-18 20:12:31,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:12:32,520 INFO L130 PetriNetUnfolder]: 95/1143 cut-off events. [2022-11-18 20:12:32,520 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 20:12:32,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1385 conditions, 1143 events. 95/1143 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7384 event pairs, 25 based on Foata normal form. 93/1163 useless extension candidates. Maximal degree in co-relation 1332. Up to 89 conditions per place. [2022-11-18 20:12:32,535 INFO L137 encePairwiseOnDemand]: 161/183 looper letters, 52 selfloop transitions, 38 changer transitions 11/239 dead transitions. [2022-11-18 20:12:32,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 239 transitions, 673 flow [2022-11-18 20:12:32,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 20:12:32,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 20:12:32,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2885 transitions. [2022-11-18 20:12:32,584 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8297382801265458 [2022-11-18 20:12:32,586 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2885 transitions. [2022-11-18 20:12:32,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2885 transitions. [2022-11-18 20:12:32,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:12:32,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2885 transitions. [2022-11-18 20:12:32,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 151.8421052631579) internal successors, (2885), 19 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:32,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 183.0) internal successors, (3660), 20 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:32,626 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 183.0) internal successors, (3660), 20 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:32,629 INFO L175 Difference]: Start difference. First operand has 177 places, 181 transitions, 365 flow. Second operand 19 states and 2885 transitions. [2022-11-18 20:12:32,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 239 transitions, 673 flow [2022-11-18 20:12:32,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 239 transitions, 672 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:12:32,644 INFO L231 Difference]: Finished difference. Result has 196 places, 197 transitions, 514 flow [2022-11-18 20:12:32,646 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=514, PETRI_PLACES=196, PETRI_TRANSITIONS=197} [2022-11-18 20:12:32,652 INFO L288 CegarLoopForPetriNet]: 177 programPoint places, 19 predicate places. [2022-11-18 20:12:32,653 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 197 transitions, 514 flow [2022-11-18 20:12:32,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 146.5) internal successors, (1172), 8 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:32,654 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:12:32,655 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:32,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:12:32,656 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-18 20:12:32,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:32,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1653816237, now seen corresponding path program 1 times [2022-11-18 20:12:32,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:32,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194491293] [2022-11-18 20:12:32,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:32,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:33,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:33,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:33,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194491293] [2022-11-18 20:12:33,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194491293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:12:33,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:12:33,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:12:33,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741996880] [2022-11-18 20:12:33,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:12:33,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:12:33,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:33,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:12:33,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:12:33,141 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 183 [2022-11-18 20:12:33,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 197 transitions, 514 flow. Second operand has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:33,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:12:33,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 183 [2022-11-18 20:12:33,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:12:33,303 INFO L130 PetriNetUnfolder]: 27/508 cut-off events. [2022-11-18 20:12:33,304 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-18 20:12:33,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 508 events. 27/508 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2039 event pairs, 11 based on Foata normal form. 6/499 useless extension candidates. Maximal degree in co-relation 683. Up to 60 conditions per place. [2022-11-18 20:12:33,306 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 23 selfloop transitions, 9 changer transitions 2/186 dead transitions. [2022-11-18 20:12:33,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 186 transitions, 511 flow [2022-11-18 20:12:33,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:12:33,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:12:33,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 765 transitions. [2022-11-18 20:12:33,309 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8360655737704918 [2022-11-18 20:12:33,309 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 765 transitions. [2022-11-18 20:12:33,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 765 transitions. [2022-11-18 20:12:33,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:12:33,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 765 transitions. [2022-11-18 20:12:33,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:33,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:33,315 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:33,315 INFO L175 Difference]: Start difference. First operand has 196 places, 197 transitions, 514 flow. Second operand 5 states and 765 transitions. [2022-11-18 20:12:33,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 186 transitions, 511 flow [2022-11-18 20:12:33,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 186 transitions, 505 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-18 20:12:33,321 INFO L231 Difference]: Finished difference. Result has 187 places, 179 transitions, 456 flow [2022-11-18 20:12:33,321 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=456, PETRI_PLACES=187, PETRI_TRANSITIONS=179} [2022-11-18 20:12:33,322 INFO L288 CegarLoopForPetriNet]: 177 programPoint places, 10 predicate places. [2022-11-18 20:12:33,322 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 179 transitions, 456 flow [2022-11-18 20:12:33,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:33,323 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:12:33,323 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:33,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:12:33,324 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-18 20:12:33,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:33,324 INFO L85 PathProgramCache]: Analyzing trace with hash -50367682, now seen corresponding path program 1 times [2022-11-18 20:12:33,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:33,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711136243] [2022-11-18 20:12:33,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:33,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:33,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:33,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711136243] [2022-11-18 20:12:33,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711136243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:12:33,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:12:33,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:12:33,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223503617] [2022-11-18 20:12:33,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:12:33,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:12:33,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:33,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:12:33,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:12:33,622 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 183 [2022-11-18 20:12:33,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 179 transitions, 456 flow. Second operand has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:33,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:12:33,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 183 [2022-11-18 20:12:33,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:12:33,916 INFO L130 PetriNetUnfolder]: 33/645 cut-off events. [2022-11-18 20:12:33,916 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2022-11-18 20:12:33,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 645 events. 33/645 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2877 event pairs, 8 based on Foata normal form. 1/628 useless extension candidates. Maximal degree in co-relation 870. Up to 59 conditions per place. [2022-11-18 20:12:33,919 INFO L137 encePairwiseOnDemand]: 168/183 looper letters, 39 selfloop transitions, 25 changer transitions 0/202 dead transitions. [2022-11-18 20:12:33,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 202 transitions, 634 flow [2022-11-18 20:12:33,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:12:33,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 20:12:33,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2385 transitions. [2022-11-18 20:12:33,926 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8145491803278688 [2022-11-18 20:12:33,926 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2385 transitions. [2022-11-18 20:12:33,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2385 transitions. [2022-11-18 20:12:33,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:12:33,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2385 transitions. [2022-11-18 20:12:33,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 149.0625) internal successors, (2385), 16 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:33,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:33,942 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:33,942 INFO L175 Difference]: Start difference. First operand has 187 places, 179 transitions, 456 flow. Second operand 16 states and 2385 transitions. [2022-11-18 20:12:33,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 202 transitions, 634 flow [2022-11-18 20:12:33,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 202 transitions, 631 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:12:33,955 INFO L231 Difference]: Finished difference. Result has 200 places, 185 transitions, 534 flow [2022-11-18 20:12:33,955 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=534, PETRI_PLACES=200, PETRI_TRANSITIONS=185} [2022-11-18 20:12:33,958 INFO L288 CegarLoopForPetriNet]: 177 programPoint places, 23 predicate places. [2022-11-18 20:12:33,958 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 185 transitions, 534 flow [2022-11-18 20:12:33,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:33,959 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:12:33,959 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:33,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:12:33,960 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-18 20:12:33,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:33,961 INFO L85 PathProgramCache]: Analyzing trace with hash 709444742, now seen corresponding path program 1 times [2022-11-18 20:12:33,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:33,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768798040] [2022-11-18 20:12:33,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:33,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:34,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:34,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:34,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768798040] [2022-11-18 20:12:34,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768798040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:12:34,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:12:34,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 20:12:34,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423017714] [2022-11-18 20:12:34,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:12:34,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:12:34,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:34,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:12:34,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:12:34,324 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 183 [2022-11-18 20:12:34,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 185 transitions, 534 flow. Second operand has 13 states, 13 states have (on average 132.15384615384616) internal successors, (1718), 13 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:34,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:12:34,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 183 [2022-11-18 20:12:34,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:12:35,448 INFO L130 PetriNetUnfolder]: 119/847 cut-off events. [2022-11-18 20:12:35,448 INFO L131 PetriNetUnfolder]: For 137/146 co-relation queries the response was YES. [2022-11-18 20:12:35,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1443 conditions, 847 events. 119/847 cut-off events. For 137/146 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4354 event pairs, 1 based on Foata normal form. 6/825 useless extension candidates. Maximal degree in co-relation 1376. Up to 47 conditions per place. [2022-11-18 20:12:35,453 INFO L137 encePairwiseOnDemand]: 164/183 looper letters, 109 selfloop transitions, 50 changer transitions 0/283 dead transitions. [2022-11-18 20:12:35,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 283 transitions, 1133 flow [2022-11-18 20:12:35,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 20:12:35,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-18 20:12:35,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3532 transitions. [2022-11-18 20:12:35,462 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7423287095418243 [2022-11-18 20:12:35,462 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3532 transitions. [2022-11-18 20:12:35,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3532 transitions. [2022-11-18 20:12:35,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:12:35,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3532 transitions. [2022-11-18 20:12:35,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 135.84615384615384) internal successors, (3532), 26 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:35,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 183.0) internal successors, (4941), 27 states have internal predecessors, (4941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:35,485 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 183.0) internal successors, (4941), 27 states have internal predecessors, (4941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:35,485 INFO L175 Difference]: Start difference. First operand has 200 places, 185 transitions, 534 flow. Second operand 26 states and 3532 transitions. [2022-11-18 20:12:35,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 283 transitions, 1133 flow [2022-11-18 20:12:35,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 283 transitions, 1092 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 20:12:35,494 INFO L231 Difference]: Finished difference. Result has 224 places, 211 transitions, 747 flow [2022-11-18 20:12:35,494 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=747, PETRI_PLACES=224, PETRI_TRANSITIONS=211} [2022-11-18 20:12:35,495 INFO L288 CegarLoopForPetriNet]: 177 programPoint places, 47 predicate places. [2022-11-18 20:12:35,496 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 211 transitions, 747 flow [2022-11-18 20:12:35,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 132.15384615384616) internal successors, (1718), 13 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:35,497 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:12:35,497 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:35,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:12:35,498 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-18 20:12:35,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:35,498 INFO L85 PathProgramCache]: Analyzing trace with hash -560837835, now seen corresponding path program 1 times [2022-11-18 20:12:35,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:35,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292550797] [2022-11-18 20:12:35,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:35,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:35,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:35,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292550797] [2022-11-18 20:12:35,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292550797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:12:35,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:12:35,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:12:35,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613050453] [2022-11-18 20:12:35,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:12:35,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:12:35,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:35,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:12:35,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:12:35,747 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 183 [2022-11-18 20:12:35,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 211 transitions, 747 flow. Second operand has 8 states, 8 states have (on average 142.375) internal successors, (1139), 8 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:35,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:12:35,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 183 [2022-11-18 20:12:35,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:12:36,106 INFO L130 PetriNetUnfolder]: 44/730 cut-off events. [2022-11-18 20:12:36,107 INFO L131 PetriNetUnfolder]: For 259/262 co-relation queries the response was YES. [2022-11-18 20:12:36,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1253 conditions, 730 events. 44/730 cut-off events. For 259/262 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3269 event pairs, 6 based on Foata normal form. 4/709 useless extension candidates. Maximal degree in co-relation 1182. Up to 55 conditions per place. [2022-11-18 20:12:36,111 INFO L137 encePairwiseOnDemand]: 171/183 looper letters, 59 selfloop transitions, 34 changer transitions 0/231 dead transitions. [2022-11-18 20:12:36,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 231 transitions, 979 flow [2022-11-18 20:12:36,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:12:36,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 20:12:36,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1756 transitions. [2022-11-18 20:12:36,116 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7996357012750456 [2022-11-18 20:12:36,116 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1756 transitions. [2022-11-18 20:12:36,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1756 transitions. [2022-11-18 20:12:36,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:12:36,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1756 transitions. [2022-11-18 20:12:36,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 146.33333333333334) internal successors, (1756), 12 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:36,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:36,126 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:36,127 INFO L175 Difference]: Start difference. First operand has 224 places, 211 transitions, 747 flow. Second operand 12 states and 1756 transitions. [2022-11-18 20:12:36,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 231 transitions, 979 flow [2022-11-18 20:12:36,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 231 transitions, 953 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-18 20:12:36,135 INFO L231 Difference]: Finished difference. Result has 229 places, 209 transitions, 781 flow [2022-11-18 20:12:36,136 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=781, PETRI_PLACES=229, PETRI_TRANSITIONS=209} [2022-11-18 20:12:36,136 INFO L288 CegarLoopForPetriNet]: 177 programPoint places, 52 predicate places. [2022-11-18 20:12:36,137 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 209 transitions, 781 flow [2022-11-18 20:12:36,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 142.375) internal successors, (1139), 8 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:36,137 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:12:36,138 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:36,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:12:36,138 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-18 20:12:36,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:36,139 INFO L85 PathProgramCache]: Analyzing trace with hash 486415730, now seen corresponding path program 1 times [2022-11-18 20:12:36,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:36,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071141069] [2022-11-18 20:12:36,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:36,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:36,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:36,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:36,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071141069] [2022-11-18 20:12:36,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071141069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:12:36,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:12:36,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 20:12:36,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407814999] [2022-11-18 20:12:36,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:12:36,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:12:36,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:36,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:12:36,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:12:36,553 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 183 [2022-11-18 20:12:36,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 209 transitions, 781 flow. Second operand has 13 states, 13 states have (on average 136.46153846153845) internal successors, (1774), 13 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:36,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:12:36,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 183 [2022-11-18 20:12:36,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:12:37,647 INFO L130 PetriNetUnfolder]: 159/1446 cut-off events. [2022-11-18 20:12:37,648 INFO L131 PetriNetUnfolder]: For 632/662 co-relation queries the response was YES. [2022-11-18 20:12:37,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2631 conditions, 1446 events. 159/1446 cut-off events. For 632/662 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 9734 event pairs, 41 based on Foata normal form. 29/1421 useless extension candidates. Maximal degree in co-relation 2563. Up to 107 conditions per place. [2022-11-18 20:12:37,656 INFO L137 encePairwiseOnDemand]: 163/183 looper letters, 71 selfloop transitions, 55 changer transitions 53/319 dead transitions. [2022-11-18 20:12:37,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 319 transitions, 1610 flow [2022-11-18 20:12:37,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:12:37,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:12:37,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4834 transitions. [2022-11-18 20:12:37,669 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7547228727556596 [2022-11-18 20:12:37,669 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4834 transitions. [2022-11-18 20:12:37,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4834 transitions. [2022-11-18 20:12:37,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:12:37,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4834 transitions. [2022-11-18 20:12:37,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 138.11428571428573) internal successors, (4834), 35 states have internal predecessors, (4834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:37,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 183.0) internal successors, (6588), 36 states have internal predecessors, (6588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:37,702 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 183.0) internal successors, (6588), 36 states have internal predecessors, (6588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:37,702 INFO L175 Difference]: Start difference. First operand has 229 places, 209 transitions, 781 flow. Second operand 35 states and 4834 transitions. [2022-11-18 20:12:37,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 319 transitions, 1610 flow [2022-11-18 20:12:37,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 319 transitions, 1491 flow, removed 9 selfloop flow, removed 10 redundant places. [2022-11-18 20:12:37,715 INFO L231 Difference]: Finished difference. Result has 269 places, 236 transitions, 989 flow [2022-11-18 20:12:37,716 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=989, PETRI_PLACES=269, PETRI_TRANSITIONS=236} [2022-11-18 20:12:37,716 INFO L288 CegarLoopForPetriNet]: 177 programPoint places, 92 predicate places. [2022-11-18 20:12:37,717 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 236 transitions, 989 flow [2022-11-18 20:12:37,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 136.46153846153845) internal successors, (1774), 13 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:37,718 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:12:37,719 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:37,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:12:37,719 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-18 20:12:37,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:37,720 INFO L85 PathProgramCache]: Analyzing trace with hash -996319822, now seen corresponding path program 1 times [2022-11-18 20:12:37,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:37,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158717056] [2022-11-18 20:12:37,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:37,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:38,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:38,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:38,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158717056] [2022-11-18 20:12:38,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158717056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:12:38,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:12:38,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:12:38,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499438070] [2022-11-18 20:12:38,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:12:38,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:12:38,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:38,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:12:38,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:12:38,271 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 183 [2022-11-18 20:12:38,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 236 transitions, 989 flow. Second operand has 8 states, 8 states have (on average 143.125) internal successors, (1145), 8 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:38,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:12:38,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 183 [2022-11-18 20:12:38,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:12:38,508 INFO L130 PetriNetUnfolder]: 51/751 cut-off events. [2022-11-18 20:12:38,508 INFO L131 PetriNetUnfolder]: For 587/590 co-relation queries the response was YES. [2022-11-18 20:12:38,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 751 events. 51/751 cut-off events. For 587/590 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3739 event pairs, 10 based on Foata normal form. 4/725 useless extension candidates. Maximal degree in co-relation 1460. Up to 57 conditions per place. [2022-11-18 20:12:38,514 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 28 selfloop transitions, 9 changer transitions 5/233 dead transitions. [2022-11-18 20:12:38,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 233 transitions, 1012 flow [2022-11-18 20:12:38,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:12:38,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:12:38,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 877 transitions. [2022-11-18 20:12:38,519 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7987249544626593 [2022-11-18 20:12:38,519 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 877 transitions. [2022-11-18 20:12:38,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 877 transitions. [2022-11-18 20:12:38,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:12:38,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 877 transitions. [2022-11-18 20:12:38,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.16666666666666) internal successors, (877), 6 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:38,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:38,529 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:38,529 INFO L175 Difference]: Start difference. First operand has 269 places, 236 transitions, 989 flow. Second operand 6 states and 877 transitions. [2022-11-18 20:12:38,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 233 transitions, 1012 flow [2022-11-18 20:12:38,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 233 transitions, 959 flow, removed 15 selfloop flow, removed 13 redundant places. [2022-11-18 20:12:38,539 INFO L231 Difference]: Finished difference. Result has 246 places, 224 transitions, 869 flow [2022-11-18 20:12:38,539 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=869, PETRI_PLACES=246, PETRI_TRANSITIONS=224} [2022-11-18 20:12:38,540 INFO L288 CegarLoopForPetriNet]: 177 programPoint places, 69 predicate places. [2022-11-18 20:12:38,540 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 224 transitions, 869 flow [2022-11-18 20:12:38,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 143.125) internal successors, (1145), 8 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:38,541 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:12:38,541 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:38,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:12:38,542 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-18 20:12:38,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:38,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1530175800, now seen corresponding path program 1 times [2022-11-18 20:12:38,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:38,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565517072] [2022-11-18 20:12:38,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:38,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:38,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:38,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:38,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565517072] [2022-11-18 20:12:38,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565517072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:12:38,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:12:38,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:12:38,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558106047] [2022-11-18 20:12:38,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:12:38,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:12:38,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:38,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:12:38,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:12:38,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 183 [2022-11-18 20:12:38,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 224 transitions, 869 flow. Second operand has 8 states, 8 states have (on average 142.875) internal successors, (1143), 8 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:38,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:12:38,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 183 [2022-11-18 20:12:38,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:12:39,206 INFO L130 PetriNetUnfolder]: 57/786 cut-off events. [2022-11-18 20:12:39,207 INFO L131 PetriNetUnfolder]: For 528/540 co-relation queries the response was YES. [2022-11-18 20:12:39,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1533 conditions, 786 events. 57/786 cut-off events. For 528/540 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3784 event pairs, 8 based on Foata normal form. 4/757 useless extension candidates. Maximal degree in co-relation 1460. Up to 44 conditions per place. [2022-11-18 20:12:39,211 INFO L137 encePairwiseOnDemand]: 170/183 looper letters, 48 selfloop transitions, 34 changer transitions 0/237 dead transitions. [2022-11-18 20:12:39,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 237 transitions, 1075 flow [2022-11-18 20:12:39,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:12:39,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 20:12:39,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1744 transitions. [2022-11-18 20:12:39,216 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7941712204007286 [2022-11-18 20:12:39,216 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1744 transitions. [2022-11-18 20:12:39,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1744 transitions. [2022-11-18 20:12:39,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:12:39,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1744 transitions. [2022-11-18 20:12:39,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 145.33333333333334) internal successors, (1744), 12 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:39,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:39,226 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:39,227 INFO L175 Difference]: Start difference. First operand has 246 places, 224 transitions, 869 flow. Second operand 12 states and 1744 transitions. [2022-11-18 20:12:39,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 237 transitions, 1075 flow [2022-11-18 20:12:39,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 237 transitions, 1032 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 20:12:39,236 INFO L231 Difference]: Finished difference. Result has 244 places, 222 transitions, 888 flow [2022-11-18 20:12:39,236 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=888, PETRI_PLACES=244, PETRI_TRANSITIONS=222} [2022-11-18 20:12:39,237 INFO L288 CegarLoopForPetriNet]: 177 programPoint places, 67 predicate places. [2022-11-18 20:12:39,237 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 222 transitions, 888 flow [2022-11-18 20:12:39,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 142.875) internal successors, (1143), 8 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:39,238 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:12:39,238 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:39,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:12:39,239 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-18 20:12:39,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:39,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1421295273, now seen corresponding path program 1 times [2022-11-18 20:12:39,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:39,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706484754] [2022-11-18 20:12:39,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:39,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:39,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:39,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:39,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706484754] [2022-11-18 20:12:39,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706484754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:12:39,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:12:39,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:12:39,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938384349] [2022-11-18 20:12:39,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:12:39,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:12:39,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:39,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:12:39,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:12:39,594 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 183 [2022-11-18 20:12:39,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 222 transitions, 888 flow. Second operand has 6 states, 6 states have (on average 149.16666666666666) internal successors, (895), 6 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:39,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:12:39,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 183 [2022-11-18 20:12:39,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:12:39,728 INFO L130 PetriNetUnfolder]: 22/434 cut-off events. [2022-11-18 20:12:39,729 INFO L131 PetriNetUnfolder]: For 220/221 co-relation queries the response was YES. [2022-11-18 20:12:39,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 813 conditions, 434 events. 22/434 cut-off events. For 220/221 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1322 event pairs, 6 based on Foata normal form. 1/427 useless extension candidates. Maximal degree in co-relation 737. Up to 37 conditions per place. [2022-11-18 20:12:39,732 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 25 selfloop transitions, 8 changer transitions 19/183 dead transitions. [2022-11-18 20:12:39,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 183 transitions, 653 flow [2022-11-18 20:12:39,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:12:39,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:12:39,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 763 transitions. [2022-11-18 20:12:39,734 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.833879781420765 [2022-11-18 20:12:39,734 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 763 transitions. [2022-11-18 20:12:39,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 763 transitions. [2022-11-18 20:12:39,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:12:39,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 763 transitions. [2022-11-18 20:12:39,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 152.6) internal successors, (763), 5 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:39,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:39,739 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:39,739 INFO L175 Difference]: Start difference. First operand has 244 places, 222 transitions, 888 flow. Second operand 5 states and 763 transitions. [2022-11-18 20:12:39,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 183 transitions, 653 flow [2022-11-18 20:12:39,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 183 transitions, 595 flow, removed 7 selfloop flow, removed 18 redundant places. [2022-11-18 20:12:39,746 INFO L231 Difference]: Finished difference. Result has 203 places, 159 transitions, 454 flow [2022-11-18 20:12:39,747 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=454, PETRI_PLACES=203, PETRI_TRANSITIONS=159} [2022-11-18 20:12:39,748 INFO L288 CegarLoopForPetriNet]: 177 programPoint places, 26 predicate places. [2022-11-18 20:12:39,748 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 159 transitions, 454 flow [2022-11-18 20:12:39,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 149.16666666666666) internal successors, (895), 6 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:39,749 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:12:39,749 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:39,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:12:39,750 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-18 20:12:39,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:39,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1417240380, now seen corresponding path program 1 times [2022-11-18 20:12:39,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:39,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495011697] [2022-11-18 20:12:39,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:39,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:40,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:40,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495011697] [2022-11-18 20:12:40,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495011697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:12:40,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:12:40,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:12:40,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82401807] [2022-11-18 20:12:40,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:12:40,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:12:40,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:40,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:12:40,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:12:40,101 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 183 [2022-11-18 20:12:40,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 159 transitions, 454 flow. Second operand has 11 states, 11 states have (on average 138.9090909090909) internal successors, (1528), 11 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:40,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:12:40,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 183 [2022-11-18 20:12:40,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:12:40,546 INFO L130 PetriNetUnfolder]: 40/395 cut-off events. [2022-11-18 20:12:40,548 INFO L131 PetriNetUnfolder]: For 365/365 co-relation queries the response was YES. [2022-11-18 20:12:40,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 884 conditions, 395 events. 40/395 cut-off events. For 365/365 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1222 event pairs, 18 based on Foata normal form. 4/393 useless extension candidates. Maximal degree in co-relation 821. Up to 63 conditions per place. [2022-11-18 20:12:40,550 INFO L137 encePairwiseOnDemand]: 167/183 looper letters, 22 selfloop transitions, 14 changer transitions 17/178 dead transitions. [2022-11-18 20:12:40,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 178 transitions, 688 flow [2022-11-18 20:12:40,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:12:40,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 20:12:40,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2366 transitions. [2022-11-18 20:12:40,554 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7605271616843459 [2022-11-18 20:12:40,554 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2366 transitions. [2022-11-18 20:12:40,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2366 transitions. [2022-11-18 20:12:40,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:12:40,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2366 transitions. [2022-11-18 20:12:40,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 139.1764705882353) internal successors, (2366), 17 states have internal predecessors, (2366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:40,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:40,565 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:40,566 INFO L175 Difference]: Start difference. First operand has 203 places, 159 transitions, 454 flow. Second operand 17 states and 2366 transitions. [2022-11-18 20:12:40,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 178 transitions, 688 flow [2022-11-18 20:12:40,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 178 transitions, 578 flow, removed 23 selfloop flow, removed 15 redundant places. [2022-11-18 20:12:40,571 INFO L231 Difference]: Finished difference. Result has 193 places, 161 transitions, 442 flow [2022-11-18 20:12:40,572 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=442, PETRI_PLACES=193, PETRI_TRANSITIONS=161} [2022-11-18 20:12:40,574 INFO L288 CegarLoopForPetriNet]: 177 programPoint places, 16 predicate places. [2022-11-18 20:12:40,574 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 161 transitions, 442 flow [2022-11-18 20:12:40,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 138.9090909090909) internal successors, (1528), 11 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:40,577 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:12:40,577 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:40,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:12:40,578 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-18 20:12:40,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:40,578 INFO L85 PathProgramCache]: Analyzing trace with hash 941062412, now seen corresponding path program 1 times [2022-11-18 20:12:40,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:40,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721959107] [2022-11-18 20:12:40,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:40,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:41,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:41,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:41,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721959107] [2022-11-18 20:12:41,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721959107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:12:41,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:12:41,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:12:41,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420754552] [2022-11-18 20:12:41,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:12:41,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:12:41,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:41,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:12:41,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:12:41,016 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 183 [2022-11-18 20:12:41,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 161 transitions, 442 flow. Second operand has 8 states, 8 states have (on average 143.75) internal successors, (1150), 8 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:41,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:12:41,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 183 [2022-11-18 20:12:41,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:12:41,146 INFO L130 PetriNetUnfolder]: 8/186 cut-off events. [2022-11-18 20:12:41,146 INFO L131 PetriNetUnfolder]: For 100/101 co-relation queries the response was YES. [2022-11-18 20:12:41,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 186 events. 8/186 cut-off events. For 100/101 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 168 event pairs, 0 based on Foata normal form. 7/191 useless extension candidates. Maximal degree in co-relation 301. Up to 25 conditions per place. [2022-11-18 20:12:41,147 INFO L137 encePairwiseOnDemand]: 178/183 looper letters, 0 selfloop transitions, 0 changer transitions 149/149 dead transitions. [2022-11-18 20:12:41,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 149 transitions, 476 flow [2022-11-18 20:12:41,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:12:41,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:12:41,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 878 transitions. [2022-11-18 20:12:41,149 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7996357012750456 [2022-11-18 20:12:41,149 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 878 transitions. [2022-11-18 20:12:41,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 878 transitions. [2022-11-18 20:12:41,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:12:41,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 878 transitions. [2022-11-18 20:12:41,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:41,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:41,154 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:41,154 INFO L175 Difference]: Start difference. First operand has 193 places, 161 transitions, 442 flow. Second operand 6 states and 878 transitions. [2022-11-18 20:12:41,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 149 transitions, 476 flow [2022-11-18 20:12:41,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 149 transitions, 438 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-18 20:12:41,157 INFO L231 Difference]: Finished difference. Result has 165 places, 0 transitions, 0 flow [2022-11-18 20:12:41,157 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=165, PETRI_TRANSITIONS=0} [2022-11-18 20:12:41,158 INFO L288 CegarLoopForPetriNet]: 177 programPoint places, -12 predicate places. [2022-11-18 20:12:41,158 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 0 transitions, 0 flow [2022-11-18 20:12:41,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 143.75) internal successors, (1150), 8 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:41,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-11-18 20:12:41,162 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-11-18 20:12:41,162 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-11-18 20:12:41,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-11-18 20:12:41,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-11-18 20:12:41,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-11-18 20:12:41,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-11-18 20:12:41,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:12:41,164 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:41,169 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 20:12:41,170 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:12:41,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:12:41 BasicIcfg [2022-11-18 20:12:41,175 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:12:41,175 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:12:41,175 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:12:41,176 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:12:41,176 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:12:30" (3/4) ... [2022-11-18 20:12:41,179 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 20:12:41,185 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-11-18 20:12:41,190 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-18 20:12:41,190 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-18 20:12:41,190 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 20:12:41,191 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 20:12:41,223 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcbfb4bd-2461-4138-9b80-6c9f38056b3d/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:12:41,224 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:12:41,224 INFO L158 Benchmark]: Toolchain (without parser) took 11950.69ms. Allocated memory was 107.0MB in the beginning and 247.5MB in the end (delta: 140.5MB). Free memory was 65.8MB in the beginning and 105.4MB in the end (delta: -39.6MB). Peak memory consumption was 99.4MB. Max. memory is 16.1GB. [2022-11-18 20:12:41,224 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 107.0MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:12:41,225 INFO L158 Benchmark]: CACSL2BoogieTranslator took 572.58ms. Allocated memory is still 107.0MB. Free memory was 65.5MB in the beginning and 70.0MB in the end (delta: -4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:12:41,225 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.92ms. Allocated memory is still 107.0MB. Free memory was 70.0MB in the beginning and 67.7MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 20:12:41,226 INFO L158 Benchmark]: Boogie Preprocessor took 46.53ms. Allocated memory is still 107.0MB. Free memory was 67.7MB in the beginning and 65.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:12:41,226 INFO L158 Benchmark]: RCFGBuilder took 652.86ms. Allocated memory is still 107.0MB. Free memory was 65.9MB in the beginning and 48.5MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-18 20:12:41,226 INFO L158 Benchmark]: TraceAbstraction took 10568.21ms. Allocated memory was 107.0MB in the beginning and 247.5MB in the end (delta: 140.5MB). Free memory was 47.9MB in the beginning and 108.5MB in the end (delta: -60.6MB). Peak memory consumption was 82.4MB. Max. memory is 16.1GB. [2022-11-18 20:12:41,227 INFO L158 Benchmark]: Witness Printer took 48.46ms. Allocated memory is still 247.5MB. Free memory was 108.5MB in the beginning and 105.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:12:41,228 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 107.0MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 572.58ms. Allocated memory is still 107.0MB. Free memory was 65.5MB in the beginning and 70.0MB in the end (delta: -4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.92ms. Allocated memory is still 107.0MB. Free memory was 70.0MB in the beginning and 67.7MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.53ms. Allocated memory is still 107.0MB. Free memory was 67.7MB in the beginning and 65.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 652.86ms. Allocated memory is still 107.0MB. Free memory was 65.9MB in the beginning and 48.5MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 10568.21ms. Allocated memory was 107.0MB in the beginning and 247.5MB in the end (delta: 140.5MB). Free memory was 47.9MB in the beginning and 108.5MB in the end (delta: -60.6MB). Peak memory consumption was 82.4MB. Max. memory is 16.1GB. * Witness Printer took 48.46ms. Allocated memory is still 247.5MB. Free memory was 108.5MB in the beginning and 105.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - 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, 255 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.3s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1299 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1299 mSDsluCounter, 1881 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1537 mSDsCounter, 86 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1380 IncrementalHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 86 mSolverCounterUnsat, 344 mSDtfsCounter, 1380 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 224 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=989occurred in iteration=6, InterpolantAutomatonStates: 159, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 1167 NumberOfCodeBlocks, 1167 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1156 ConstructedInterpolants, 0 QuantifiedInterpolants, 5316 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 20:12:41,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcbfb4bd-2461-4138-9b80-6c9f38056b3d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE