./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix053.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e196b1-8763-4c08-b62c-19d14fda1af1/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e196b1-8763-4c08-b62c-19d14fda1af1/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e196b1-8763-4c08-b62c-19d14fda1af1/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e196b1-8763-4c08-b62c-19d14fda1af1/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix053.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e196b1-8763-4c08-b62c-19d14fda1af1/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e196b1-8763-4c08-b62c-19d14fda1af1/bin/uautomizer-J5u9QxTXDZ --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 998817f829569afa1d1e3eda89c2594d280c8ae81957c207a6b68804966cf3a6 --- 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-dbf71c6-m [2022-10-17 10:55:34,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:55:34,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:55:34,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:55:34,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:55:34,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:55:34,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:55:34,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:55:34,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:55:34,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:55:34,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:55:34,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:55:34,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:55:34,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:55:34,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:55:34,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:55:34,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:55:34,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:55:34,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:55:34,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:55:34,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:55:34,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:55:34,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:55:34,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:55:34,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:55:34,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:55:34,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:55:34,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:55:34,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:55:34,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:55:34,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:55:34,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:55:34,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:55:34,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:55:34,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:55:34,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:55:34,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:55:34,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:55:34,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:55:34,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:55:34,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:55:34,984 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e196b1-8763-4c08-b62c-19d14fda1af1/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:55:35,009 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:55:35,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:55:35,010 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:55:35,010 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:55:35,011 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:55:35,011 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:55:35,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:55:35,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:55:35,012 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:55:35,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:55:35,013 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:55:35,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:55:35,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:55:35,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:55:35,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:55:35,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:55:35,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:55:35,015 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:55:35,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:55:35,015 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:55:35,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:55:35,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:55:35,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:55:35,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:55:35,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:55:35,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:55:35,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:55:35,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:55:35,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:55:35,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:55:35,018 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:55:35,018 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:55:35,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:55:35,018 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_45e196b1-8763-4c08-b62c-19d14fda1af1/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e196b1-8763-4c08-b62c-19d14fda1af1/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 998817f829569afa1d1e3eda89c2594d280c8ae81957c207a6b68804966cf3a6 [2022-10-17 10:55:35,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:55:35,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:55:35,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:55:35,362 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:55:35,363 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:55:35,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e196b1-8763-4c08-b62c-19d14fda1af1/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-wmm/mix053.opt.i [2022-10-17 10:55:35,437 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e196b1-8763-4c08-b62c-19d14fda1af1/bin/uautomizer-J5u9QxTXDZ/data/b8503c868/93df0ec90369439386a652feff3690e1/FLAGf1c75cec8 [2022-10-17 10:55:35,992 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:55:35,993 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e196b1-8763-4c08-b62c-19d14fda1af1/sv-benchmarks/c/pthread-wmm/mix053.opt.i [2022-10-17 10:55:36,012 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e196b1-8763-4c08-b62c-19d14fda1af1/bin/uautomizer-J5u9QxTXDZ/data/b8503c868/93df0ec90369439386a652feff3690e1/FLAGf1c75cec8 [2022-10-17 10:55:36,285 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e196b1-8763-4c08-b62c-19d14fda1af1/bin/uautomizer-J5u9QxTXDZ/data/b8503c868/93df0ec90369439386a652feff3690e1 [2022-10-17 10:55:36,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:55:36,290 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:55:36,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:55:36,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:55:36,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:55:36,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:55:36" (1/1) ... [2022-10-17 10:55:36,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35bb5e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:36, skipping insertion in model container [2022-10-17 10:55:36,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:55:36" (1/1) ... [2022-10-17 10:55:36,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:55:36,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:55:36,555 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e196b1-8763-4c08-b62c-19d14fda1af1/sv-benchmarks/c/pthread-wmm/mix053.opt.i[944,957] [2022-10-17 10:55:36,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:55:36,879 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:55:36,893 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e196b1-8763-4c08-b62c-19d14fda1af1/sv-benchmarks/c/pthread-wmm/mix053.opt.i[944,957] [2022-10-17 10:55:36,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:55:37,033 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:55:37,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:37 WrapperNode [2022-10-17 10:55:37,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:55:37,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:55:37,035 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:55:37,036 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:55:37,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:37" (1/1) ... [2022-10-17 10:55:37,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:37" (1/1) ... [2022-10-17 10:55:37,138 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 191 [2022-10-17 10:55:37,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:55:37,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:55:37,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:55:37,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:55:37,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:37" (1/1) ... [2022-10-17 10:55:37,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:37" (1/1) ... [2022-10-17 10:55:37,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:37" (1/1) ... [2022-10-17 10:55:37,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:37" (1/1) ... [2022-10-17 10:55:37,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:37" (1/1) ... [2022-10-17 10:55:37,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:37" (1/1) ... [2022-10-17 10:55:37,202 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:37" (1/1) ... [2022-10-17 10:55:37,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:37" (1/1) ... [2022-10-17 10:55:37,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:55:37,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:55:37,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:55:37,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:55:37,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:37" (1/1) ... [2022-10-17 10:55:37,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:55:37,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e196b1-8763-4c08-b62c-19d14fda1af1/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:37,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e196b1-8763-4c08-b62c-19d14fda1af1/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:37,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e196b1-8763-4c08-b62c-19d14fda1af1/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:55:37,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:55:37,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:55:37,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:55:37,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:55:37,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:55:37,315 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-10-17 10:55:37,315 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-10-17 10:55:37,315 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-10-17 10:55:37,315 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-10-17 10:55:37,315 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-10-17 10:55:37,315 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-10-17 10:55:37,316 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-10-17 10:55:37,316 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-10-17 10:55:37,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:55:37,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:55:37,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:55:37,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:55:37,319 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:55:37,478 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:55:37,491 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:55:38,280 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:55:38,773 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:55:38,774 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:55:38,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:55:38 BoogieIcfgContainer [2022-10-17 10:55:38,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:55:38,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:55:38,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:55:38,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:55:38,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:55:36" (1/3) ... [2022-10-17 10:55:38,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62db7331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:55:38, skipping insertion in model container [2022-10-17 10:55:38,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:37" (2/3) ... [2022-10-17 10:55:38,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62db7331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:55:38, skipping insertion in model container [2022-10-17 10:55:38,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:55:38" (3/3) ... [2022-10-17 10:55:38,788 INFO L112 eAbstractionObserver]: Analyzing ICFG mix053.opt.i [2022-10-17 10:55:38,797 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:55:38,808 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:55:38,808 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 10:55:38,808 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:55:38,890 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:55:38,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 132 transitions, 284 flow [2022-10-17 10:55:39,039 INFO L130 PetriNetUnfolder]: 2/128 cut-off events. [2022-10-17 10:55:39,039 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:55:39,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 128 events. 2/128 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2022-10-17 10:55:39,047 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 132 transitions, 284 flow [2022-10-17 10:55:39,052 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 128 transitions, 268 flow [2022-10-17 10:55:39,077 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:55:39,084 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;@6a9a23c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:55:39,085 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-10-17 10:55:39,107 INFO L130 PetriNetUnfolder]: 0/87 cut-off events. [2022-10-17 10:55:39,107 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:55:39,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:55:39,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:55:39,109 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:55:39,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:55:39,115 INFO L85 PathProgramCache]: Analyzing trace with hash -2068016088, now seen corresponding path program 1 times [2022-10-17 10:55:39,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:55:39,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978593580] [2022-10-17 10:55:39,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:55:39,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:55:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:55:39,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:55:39,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:55:39,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978593580] [2022-10-17 10:55:39,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978593580] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:55:39,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:55:39,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:55:39,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671100129] [2022-10-17 10:55:39,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:55:39,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:55:39,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:55:39,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:55:40,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:55:40,007 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 132 [2022-10-17 10:55:40,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 128 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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) [2022-10-17 10:55:40,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:55:40,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 132 [2022-10-17 10:55:40,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:55:40,134 INFO L130 PetriNetUnfolder]: 10/200 cut-off events. [2022-10-17 10:55:40,134 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-10-17 10:55:40,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 200 events. 10/200 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 365 event pairs, 4 based on Foata normal form. 5/196 useless extension candidates. Maximal degree in co-relation 187. Up to 17 conditions per place. [2022-10-17 10:55:40,138 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 9 selfloop transitions, 2 changer transitions 0/126 dead transitions. [2022-10-17 10:55:40,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 126 transitions, 286 flow [2022-10-17 10:55:40,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:55:40,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:55:40,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2022-10-17 10:55:40,153 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9419191919191919 [2022-10-17 10:55:40,154 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 373 transitions. [2022-10-17 10:55:40,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 373 transitions. [2022-10-17 10:55:40,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:55:40,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 373 transitions. [2022-10-17 10:55:40,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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) [2022-10-17 10:55:40,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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) [2022-10-17 10:55:40,171 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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) [2022-10-17 10:55:40,173 INFO L175 Difference]: Start difference. First operand has 139 places, 128 transitions, 268 flow. Second operand 3 states and 373 transitions. [2022-10-17 10:55:40,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 126 transitions, 286 flow [2022-10-17 10:55:40,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 126 transitions, 282 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:55:40,182 INFO L231 Difference]: Finished difference. Result has 135 places, 124 transitions, 260 flow [2022-10-17 10:55:40,184 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=135, PETRI_TRANSITIONS=124} [2022-10-17 10:55:40,188 INFO L287 CegarLoopForPetriNet]: 139 programPoint places, -4 predicate places. [2022-10-17 10:55:40,188 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 124 transitions, 260 flow [2022-10-17 10:55:40,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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) [2022-10-17 10:55:40,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:55:40,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:55:40,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:55:40,190 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:55:40,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:55:40,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1944507167, now seen corresponding path program 1 times [2022-10-17 10:55:40,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:55:40,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746770087] [2022-10-17 10:55:40,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:55:40,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:55:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:55:40,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:55:40,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:55:40,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746770087] [2022-10-17 10:55:40,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746770087] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:55:40,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:55:40,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:55:40,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576214654] [2022-10-17 10:55:40,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:55:40,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:55:40,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:55:40,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:55:40,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:55:40,785 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 132 [2022-10-17 10:55:40,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 124 transitions, 260 flow. Second operand has 7 states, 7 states have (on average 106.14285714285714) internal successors, (743), 7 states have internal predecessors, (743), 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) [2022-10-17 10:55:40,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:55:40,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 132 [2022-10-17 10:55:40,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:55:43,508 INFO L130 PetriNetUnfolder]: 2993/7881 cut-off events. [2022-10-17 10:55:43,509 INFO L131 PetriNetUnfolder]: For 315/315 co-relation queries the response was YES. [2022-10-17 10:55:43,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12646 conditions, 7881 events. 2993/7881 cut-off events. For 315/315 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 74960 event pairs, 322 based on Foata normal form. 0/7668 useless extension candidates. Maximal degree in co-relation 12588. Up to 1419 conditions per place. [2022-10-17 10:55:43,589 INFO L137 encePairwiseOnDemand]: 121/132 looper letters, 40 selfloop transitions, 9 changer transitions 98/234 dead transitions. [2022-10-17 10:55:43,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 234 transitions, 780 flow [2022-10-17 10:55:43,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:55:43,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:55:43,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1489 transitions. [2022-10-17 10:55:43,598 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8677156177156177 [2022-10-17 10:55:43,599 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1489 transitions. [2022-10-17 10:55:43,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1489 transitions. [2022-10-17 10:55:43,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:55:43,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1489 transitions. [2022-10-17 10:55:43,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 114.53846153846153) internal successors, (1489), 13 states have internal predecessors, (1489), 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) [2022-10-17 10:55:43,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 132.0) internal successors, (1848), 14 states have internal predecessors, (1848), 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) [2022-10-17 10:55:43,615 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 132.0) internal successors, (1848), 14 states have internal predecessors, (1848), 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) [2022-10-17 10:55:43,615 INFO L175 Difference]: Start difference. First operand has 135 places, 124 transitions, 260 flow. Second operand 13 states and 1489 transitions. [2022-10-17 10:55:43,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 234 transitions, 780 flow [2022-10-17 10:55:43,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 234 transitions, 754 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:55:43,625 INFO L231 Difference]: Finished difference. Result has 157 places, 118 transitions, 338 flow [2022-10-17 10:55:43,626 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=338, PETRI_PLACES=157, PETRI_TRANSITIONS=118} [2022-10-17 10:55:43,626 INFO L287 CegarLoopForPetriNet]: 139 programPoint places, 18 predicate places. [2022-10-17 10:55:43,627 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 118 transitions, 338 flow [2022-10-17 10:55:43,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.14285714285714) internal successors, (743), 7 states have internal predecessors, (743), 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) [2022-10-17 10:55:43,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:55:43,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:55:43,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:55:43,629 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:55:43,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:55:43,630 INFO L85 PathProgramCache]: Analyzing trace with hash 326052604, now seen corresponding path program 1 times [2022-10-17 10:55:43,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:55:43,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132971873] [2022-10-17 10:55:43,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:55:43,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:55:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:55:44,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:55:44,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:55:44,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132971873] [2022-10-17 10:55:44,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132971873] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:55:44,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:55:44,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:55:44,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266225908] [2022-10-17 10:55:44,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:55:44,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:55:44,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:55:44,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:55:44,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:55:44,110 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 132 [2022-10-17 10:55:44,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 118 transitions, 338 flow. Second operand has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 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) [2022-10-17 10:55:44,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:55:44,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 132 [2022-10-17 10:55:44,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:55:45,843 INFO L130 PetriNetUnfolder]: 1898/3811 cut-off events. [2022-10-17 10:55:45,844 INFO L131 PetriNetUnfolder]: For 7923/7923 co-relation queries the response was YES. [2022-10-17 10:55:45,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12272 conditions, 3811 events. 1898/3811 cut-off events. For 7923/7923 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 27068 event pairs, 362 based on Foata normal form. 86/3768 useless extension candidates. Maximal degree in co-relation 12202. Up to 1023 conditions per place. [2022-10-17 10:55:45,889 INFO L137 encePairwiseOnDemand]: 120/132 looper letters, 42 selfloop transitions, 13 changer transitions 85/227 dead transitions. [2022-10-17 10:55:45,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 227 transitions, 1248 flow [2022-10-17 10:55:45,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:55:45,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:55:45,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1478 transitions. [2022-10-17 10:55:45,894 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8613053613053613 [2022-10-17 10:55:45,895 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1478 transitions. [2022-10-17 10:55:45,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1478 transitions. [2022-10-17 10:55:45,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:55:45,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1478 transitions. [2022-10-17 10:55:45,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 113.6923076923077) internal successors, (1478), 13 states have internal predecessors, (1478), 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) [2022-10-17 10:55:45,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 132.0) internal successors, (1848), 14 states have internal predecessors, (1848), 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) [2022-10-17 10:55:45,907 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 132.0) internal successors, (1848), 14 states have internal predecessors, (1848), 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) [2022-10-17 10:55:45,907 INFO L175 Difference]: Start difference. First operand has 157 places, 118 transitions, 338 flow. Second operand 13 states and 1478 transitions. [2022-10-17 10:55:45,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 227 transitions, 1248 flow [2022-10-17 10:55:45,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 227 transitions, 1224 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-10-17 10:55:45,939 INFO L231 Difference]: Finished difference. Result has 155 places, 126 transitions, 496 flow [2022-10-17 10:55:45,940 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=496, PETRI_PLACES=155, PETRI_TRANSITIONS=126} [2022-10-17 10:55:45,944 INFO L287 CegarLoopForPetriNet]: 139 programPoint places, 16 predicate places. [2022-10-17 10:55:45,945 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 126 transitions, 496 flow [2022-10-17 10:55:45,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 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) [2022-10-17 10:55:45,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:55:45,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:55:45,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:55:45,946 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:55:45,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:55:45,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1326349249, now seen corresponding path program 1 times [2022-10-17 10:55:45,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:55:45,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565578875] [2022-10-17 10:55:45,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:55:45,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:55:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:55:46,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:55:46,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:55:46,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565578875] [2022-10-17 10:55:46,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565578875] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:55:46,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:55:46,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:55:46,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513488961] [2022-10-17 10:55:46,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:55:46,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:55:46,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:55:46,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:55:46,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:55:46,366 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 132 [2022-10-17 10:55:46,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 126 transitions, 496 flow. Second operand has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 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) [2022-10-17 10:55:46,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:55:46,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 132 [2022-10-17 10:55:46,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:55:50,509 INFO L130 PetriNetUnfolder]: 6400/12073 cut-off events. [2022-10-17 10:55:50,509 INFO L131 PetriNetUnfolder]: For 23856/31074 co-relation queries the response was YES. [2022-10-17 10:55:50,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32063 conditions, 12073 events. 6400/12073 cut-off events. For 23856/31074 co-relation queries the response was YES. Maximal size of possible extension queue 1025. Compared 105969 event pairs, 320 based on Foata normal form. 331/11229 useless extension candidates. Maximal degree in co-relation 31983. Up to 4100 conditions per place. [2022-10-17 10:55:50,821 INFO L137 encePairwiseOnDemand]: 121/132 looper letters, 69 selfloop transitions, 20 changer transitions 0/194 dead transitions. [2022-10-17 10:55:50,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 194 transitions, 928 flow [2022-10-17 10:55:50,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:55:50,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:55:50,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1163 transitions. [2022-10-17 10:55:50,826 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8810606060606061 [2022-10-17 10:55:50,826 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1163 transitions. [2022-10-17 10:55:50,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1163 transitions. [2022-10-17 10:55:50,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:55:50,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1163 transitions. [2022-10-17 10:55:50,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 116.3) internal successors, (1163), 10 states have internal predecessors, (1163), 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) [2022-10-17 10:55:50,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 132.0) internal successors, (1452), 11 states have internal predecessors, (1452), 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) [2022-10-17 10:55:50,835 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 132.0) internal successors, (1452), 11 states have internal predecessors, (1452), 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) [2022-10-17 10:55:50,836 INFO L175 Difference]: Start difference. First operand has 155 places, 126 transitions, 496 flow. Second operand 10 states and 1163 transitions. [2022-10-17 10:55:50,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 194 transitions, 928 flow [2022-10-17 10:55:50,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 194 transitions, 910 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-10-17 10:55:50,891 INFO L231 Difference]: Finished difference. Result has 161 places, 144 transitions, 621 flow [2022-10-17 10:55:50,892 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=621, PETRI_PLACES=161, PETRI_TRANSITIONS=144} [2022-10-17 10:55:50,893 INFO L287 CegarLoopForPetriNet]: 139 programPoint places, 22 predicate places. [2022-10-17 10:55:50,893 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 144 transitions, 621 flow [2022-10-17 10:55:50,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 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) [2022-10-17 10:55:50,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:55:50,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:55:50,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:55:50,895 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:55:50,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:55:50,895 INFO L85 PathProgramCache]: Analyzing trace with hash 714313472, now seen corresponding path program 1 times [2022-10-17 10:55:50,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:55:50,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657994436] [2022-10-17 10:55:50,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:55:50,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:55:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:55:51,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:55:51,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:55:51,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657994436] [2022-10-17 10:55:51,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657994436] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:55:51,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:55:51,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:55:51,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440203919] [2022-10-17 10:55:51,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:55:51,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:55:51,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:55:51,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:55:51,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:55:51,184 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 132 [2022-10-17 10:55:51,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 144 transitions, 621 flow. Second operand has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 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) [2022-10-17 10:55:51,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:55:51,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 132 [2022-10-17 10:55:51,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:55:54,247 INFO L130 PetriNetUnfolder]: 3463/10423 cut-off events. [2022-10-17 10:55:54,248 INFO L131 PetriNetUnfolder]: For 21361/23480 co-relation queries the response was YES. [2022-10-17 10:55:54,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31888 conditions, 10423 events. 3463/10423 cut-off events. For 21361/23480 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 119377 event pairs, 911 based on Foata normal form. 210/9829 useless extension candidates. Maximal degree in co-relation 31796. Up to 2517 conditions per place. [2022-10-17 10:55:54,400 INFO L137 encePairwiseOnDemand]: 121/132 looper letters, 98 selfloop transitions, 37 changer transitions 0/240 dead transitions. [2022-10-17 10:55:54,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 240 transitions, 1579 flow [2022-10-17 10:55:54,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:55:54,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:55:54,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1465 transitions. [2022-10-17 10:55:54,405 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8537296037296037 [2022-10-17 10:55:54,405 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1465 transitions. [2022-10-17 10:55:54,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1465 transitions. [2022-10-17 10:55:54,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:55:54,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1465 transitions. [2022-10-17 10:55:54,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 112.6923076923077) internal successors, (1465), 13 states have internal predecessors, (1465), 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) [2022-10-17 10:55:54,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 132.0) internal successors, (1848), 14 states have internal predecessors, (1848), 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) [2022-10-17 10:55:54,417 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 132.0) internal successors, (1848), 14 states have internal predecessors, (1848), 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) [2022-10-17 10:55:54,417 INFO L175 Difference]: Start difference. First operand has 161 places, 144 transitions, 621 flow. Second operand 13 states and 1465 transitions. [2022-10-17 10:55:54,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 240 transitions, 1579 flow [2022-10-17 10:55:54,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 240 transitions, 1529 flow, removed 24 selfloop flow, removed 10 redundant places. [2022-10-17 10:55:54,505 INFO L231 Difference]: Finished difference. Result has 175 places, 172 transitions, 1031 flow [2022-10-17 10:55:54,506 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1031, PETRI_PLACES=175, PETRI_TRANSITIONS=172} [2022-10-17 10:55:54,509 INFO L287 CegarLoopForPetriNet]: 139 programPoint places, 36 predicate places. [2022-10-17 10:55:54,509 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 172 transitions, 1031 flow [2022-10-17 10:55:54,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 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) [2022-10-17 10:55:54,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:55:54,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:55:54,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:55:54,511 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:55:54,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:55:54,512 INFO L85 PathProgramCache]: Analyzing trace with hash 302255904, now seen corresponding path program 1 times [2022-10-17 10:55:54,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:55:54,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891393097] [2022-10-17 10:55:54,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:55:54,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:55:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:55:54,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:55:54,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:55:54,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891393097] [2022-10-17 10:55:54,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891393097] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:55:54,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:55:54,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:55:54,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165497197] [2022-10-17 10:55:54,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:55:54,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:55:54,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:55:54,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:55:54,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:55:54,831 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 132 [2022-10-17 10:55:54,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 172 transitions, 1031 flow. Second operand has 7 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 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) [2022-10-17 10:55:54,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:55:54,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 132 [2022-10-17 10:55:54,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:56:00,601 INFO L130 PetriNetUnfolder]: 9286/18291 cut-off events. [2022-10-17 10:56:00,602 INFO L131 PetriNetUnfolder]: For 71551/87761 co-relation queries the response was YES. [2022-10-17 10:56:00,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68818 conditions, 18291 events. 9286/18291 cut-off events. For 71551/87761 co-relation queries the response was YES. Maximal size of possible extension queue 1455. Compared 180106 event pairs, 177 based on Foata normal form. 1303/18756 useless extension candidates. Maximal degree in co-relation 68725. Up to 5734 conditions per place. [2022-10-17 10:56:00,822 INFO L137 encePairwiseOnDemand]: 121/132 looper letters, 97 selfloop transitions, 38 changer transitions 8/269 dead transitions. [2022-10-17 10:56:00,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 269 transitions, 2071 flow [2022-10-17 10:56:00,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:56:00,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:56:00,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1515 transitions. [2022-10-17 10:56:00,828 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8828671328671329 [2022-10-17 10:56:00,828 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1515 transitions. [2022-10-17 10:56:00,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1515 transitions. [2022-10-17 10:56:00,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:56:00,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1515 transitions. [2022-10-17 10:56:00,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.53846153846153) internal successors, (1515), 13 states have internal predecessors, (1515), 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) [2022-10-17 10:56:00,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 132.0) internal successors, (1848), 14 states have internal predecessors, (1848), 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) [2022-10-17 10:56:00,840 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 132.0) internal successors, (1848), 14 states have internal predecessors, (1848), 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) [2022-10-17 10:56:00,840 INFO L175 Difference]: Start difference. First operand has 175 places, 172 transitions, 1031 flow. Second operand 13 states and 1515 transitions. [2022-10-17 10:56:00,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 269 transitions, 2071 flow [2022-10-17 10:56:01,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 269 transitions, 2055 flow, removed 8 selfloop flow, removed 0 redundant places. [2022-10-17 10:56:01,072 INFO L231 Difference]: Finished difference. Result has 193 places, 186 transitions, 1224 flow [2022-10-17 10:56:01,073 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1224, PETRI_PLACES=193, PETRI_TRANSITIONS=186} [2022-10-17 10:56:01,076 INFO L287 CegarLoopForPetriNet]: 139 programPoint places, 54 predicate places. [2022-10-17 10:56:01,076 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 186 transitions, 1224 flow [2022-10-17 10:56:01,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 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) [2022-10-17 10:56:01,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:56:01,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:56:01,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:56:01,077 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:56:01,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:56:01,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1987135317, now seen corresponding path program 1 times [2022-10-17 10:56:01,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:56:01,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924930620] [2022-10-17 10:56:01,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:56:01,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:56:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:56:01,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:56:01,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:56:01,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924930620] [2022-10-17 10:56:01,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924930620] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:56:01,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:56:01,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:56:01,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237474044] [2022-10-17 10:56:01,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:56:01,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:56:01,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:56:01,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:56:01,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:56:01,475 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 132 [2022-10-17 10:56:01,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 186 transitions, 1224 flow. Second operand has 8 states, 8 states have (on average 109.875) internal successors, (879), 8 states have internal predecessors, (879), 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) [2022-10-17 10:56:01,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:56:01,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 132 [2022-10-17 10:56:01,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand