./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix013.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_dcf716ff-b99a-4570-b0fc-b01a0584ea2a/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf716ff-b99a-4570-b0fc-b01a0584ea2a/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf716ff-b99a-4570-b0fc-b01a0584ea2a/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf716ff-b99a-4570-b0fc-b01a0584ea2a/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix013.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf716ff-b99a-4570-b0fc-b01a0584ea2a/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf716ff-b99a-4570-b0fc-b01a0584ea2a/bin/uautomizer-tPACEb0tL8 --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 39bd8ca48891731a487992488872bfabe93c299f5e64a0d2d763ed7464a4fc31 --- 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-e04fb08 [2022-11-16 12:16:05,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:16:05,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:16:05,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:16:05,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:16:05,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:16:05,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:16:05,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:16:05,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:16:05,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:16:05,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:16:05,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:16:05,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:16:05,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:16:05,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:16:05,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:16:05,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:16:05,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:16:05,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:16:05,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:16:05,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:16:05,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:16:05,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:16:05,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:16:05,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:16:05,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:16:05,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:16:05,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:16:05,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:16:05,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:16:05,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:16:05,817 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:16:05,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:16:05,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:16:05,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:16:05,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:16:05,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:16:05,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:16:05,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:16:05,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:16:05,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:16:05,829 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf716ff-b99a-4570-b0fc-b01a0584ea2a/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:16:05,877 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:16:05,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:16:05,878 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:16:05,878 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:16:05,879 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:16:05,879 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:16:05,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:16:05,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:16:05,881 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:16:05,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:16:05,882 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:16:05,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:16:05,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:16:05,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:16:05,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:16:05,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:16:05,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:16:05,884 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:16:05,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:16:05,884 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:16:05,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:16:05,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:16:05,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:16:05,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:16:05,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:16:05,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:16:05,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:16:05,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:16:05,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:16:05,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:16:05,887 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:16:05,887 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:16:05,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:16:05,888 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_dcf716ff-b99a-4570-b0fc-b01a0584ea2a/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf716ff-b99a-4570-b0fc-b01a0584ea2a/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39bd8ca48891731a487992488872bfabe93c299f5e64a0d2d763ed7464a4fc31 [2022-11-16 12:16:06,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:16:06,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:16:06,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:16:06,249 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:16:06,250 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:16:06,251 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf716ff-b99a-4570-b0fc-b01a0584ea2a/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-wmm/mix013.oepc.i [2022-11-16 12:16:06,328 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf716ff-b99a-4570-b0fc-b01a0584ea2a/bin/uautomizer-tPACEb0tL8/data/d25192aef/a5ef3d302b23478c9b26a9f262e3b78e/FLAGc7f395dd2 [2022-11-16 12:16:06,956 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:16:06,957 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf716ff-b99a-4570-b0fc-b01a0584ea2a/sv-benchmarks/c/pthread-wmm/mix013.oepc.i [2022-11-16 12:16:06,972 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf716ff-b99a-4570-b0fc-b01a0584ea2a/bin/uautomizer-tPACEb0tL8/data/d25192aef/a5ef3d302b23478c9b26a9f262e3b78e/FLAGc7f395dd2 [2022-11-16 12:16:07,225 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf716ff-b99a-4570-b0fc-b01a0584ea2a/bin/uautomizer-tPACEb0tL8/data/d25192aef/a5ef3d302b23478c9b26a9f262e3b78e [2022-11-16 12:16:07,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:16:07,232 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:16:07,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:16:07,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:16:07,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:16:07,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:16:07" (1/1) ... [2022-11-16 12:16:07,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11def2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:07, skipping insertion in model container [2022-11-16 12:16:07,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:16:07" (1/1) ... [2022-11-16 12:16:07,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:16:07,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:16:07,511 WARN L229 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_dcf716ff-b99a-4570-b0fc-b01a0584ea2a/sv-benchmarks/c/pthread-wmm/mix013.oepc.i[945,958] [2022-11-16 12:16:07,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:16:07,682 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:16:07,694 WARN L229 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_dcf716ff-b99a-4570-b0fc-b01a0584ea2a/sv-benchmarks/c/pthread-wmm/mix013.oepc.i[945,958] [2022-11-16 12:16:07,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:16:07,806 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:16:07,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:07 WrapperNode [2022-11-16 12:16:07,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:16:07,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:16:07,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:16:07,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:16:07,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:07" (1/1) ... [2022-11-16 12:16:07,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:07" (1/1) ... [2022-11-16 12:16:07,856 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 147 [2022-11-16 12:16:07,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:16:07,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:16:07,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:16:07,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:16:07,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:07" (1/1) ... [2022-11-16 12:16:07,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:07" (1/1) ... [2022-11-16 12:16:07,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:07" (1/1) ... [2022-11-16 12:16:07,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:07" (1/1) ... [2022-11-16 12:16:07,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:07" (1/1) ... [2022-11-16 12:16:07,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:07" (1/1) ... [2022-11-16 12:16:07,885 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:07" (1/1) ... [2022-11-16 12:16:07,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:07" (1/1) ... [2022-11-16 12:16:07,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:16:07,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:16:07,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:16:07,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:16:07,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:07" (1/1) ... [2022-11-16 12:16:07,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:16:07,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf716ff-b99a-4570-b0fc-b01a0584ea2a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:07,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf716ff-b99a-4570-b0fc-b01a0584ea2a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:16:07,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf716ff-b99a-4570-b0fc-b01a0584ea2a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:16:08,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:16:08,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:16:08,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:16:08,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:16:08,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:16:08,009 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-16 12:16:08,010 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-16 12:16:08,011 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-16 12:16:08,013 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-16 12:16:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-16 12:16:08,013 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-16 12:16:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-16 12:16:08,014 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-16 12:16:08,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:16:08,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:16:08,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:16:08,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:16:08,016 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:16:08,209 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:16:08,211 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:16:08,590 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:16:08,807 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:16:08,807 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:16:08,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:16:08 BoogieIcfgContainer [2022-11-16 12:16:08,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:16:08,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:16:08,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:16:08,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:16:08,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:16:07" (1/3) ... [2022-11-16 12:16:08,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef6069d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:16:08, skipping insertion in model container [2022-11-16 12:16:08,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:07" (2/3) ... [2022-11-16 12:16:08,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef6069d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:16:08, skipping insertion in model container [2022-11-16 12:16:08,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:16:08" (3/3) ... [2022-11-16 12:16:08,821 INFO L112 eAbstractionObserver]: Analyzing ICFG mix013.oepc.i [2022-11-16 12:16:08,830 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:16:08,841 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:16:08,841 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:16:08,841 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:16:08,948 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:16:09,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 141 transitions, 302 flow [2022-11-16 12:16:09,123 INFO L130 PetriNetUnfolder]: 2/137 cut-off events. [2022-11-16 12:16:09,124 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:16:09,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 137 events. 2/137 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-11-16 12:16:09,130 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 141 transitions, 302 flow [2022-11-16 12:16:09,139 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 137 transitions, 286 flow [2022-11-16 12:16:09,158 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:16:09,167 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;@37075807, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:16:09,167 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-16 12:16:09,192 INFO L130 PetriNetUnfolder]: 0/53 cut-off events. [2022-11-16 12:16:09,192 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:16:09,193 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:09,194 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] [2022-11-16 12:16:09,195 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:16:09,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:09,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1271111762, now seen corresponding path program 1 times [2022-11-16 12:16:09,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:09,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727342798] [2022-11-16 12:16:09,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:09,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:09,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:09,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:09,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727342798] [2022-11-16 12:16:09,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727342798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:09,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:09,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:16:09,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969016738] [2022-11-16 12:16:09,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:09,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:16:09,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:09,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:16:09,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:16:09,851 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 141 [2022-11-16 12:16:09,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 137 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 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) [2022-11-16 12:16:09,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:09,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 141 [2022-11-16 12:16:09,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:10,124 INFO L130 PetriNetUnfolder]: 162/551 cut-off events. [2022-11-16 12:16:10,124 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-11-16 12:16:10,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 857 conditions, 551 events. 162/551 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2913 event pairs, 34 based on Foata normal form. 53/577 useless extension candidates. Maximal degree in co-relation 797. Up to 191 conditions per place. [2022-11-16 12:16:10,136 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 18 selfloop transitions, 2 changer transitions 0/141 dead transitions. [2022-11-16 12:16:10,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 141 transitions, 343 flow [2022-11-16 12:16:10,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:16:10,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:16:10,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2022-11-16 12:16:10,158 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9456264775413712 [2022-11-16 12:16:10,159 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2022-11-16 12:16:10,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2022-11-16 12:16:10,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:10,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2022-11-16 12:16:10,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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) [2022-11-16 12:16:10,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2022-11-16 12:16:10,181 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2022-11-16 12:16:10,183 INFO L175 Difference]: Start difference. First operand has 148 places, 137 transitions, 286 flow. Second operand 3 states and 400 transitions. [2022-11-16 12:16:10,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 141 transitions, 343 flow [2022-11-16 12:16:10,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 141 transitions, 336 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:16:10,193 INFO L231 Difference]: Finished difference. Result has 144 places, 133 transitions, 278 flow [2022-11-16 12:16:10,195 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=144, PETRI_TRANSITIONS=133} [2022-11-16 12:16:10,199 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, -4 predicate places. [2022-11-16 12:16:10,200 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 133 transitions, 278 flow [2022-11-16 12:16:10,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 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) [2022-11-16 12:16:10,201 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:10,201 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] [2022-11-16 12:16:10,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:16:10,202 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:16:10,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:10,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1548866483, now seen corresponding path program 1 times [2022-11-16 12:16:10,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:10,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182033390] [2022-11-16 12:16:10,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:10,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:10,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:10,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:10,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182033390] [2022-11-16 12:16:10,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182033390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:10,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:10,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:16:10,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415386756] [2022-11-16 12:16:10,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:10,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:16:10,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:10,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:16:10,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:16:10,800 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 141 [2022-11-16 12:16:10,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 133 transitions, 278 flow. Second operand has 6 states, 6 states have (on average 110.83333333333333) internal successors, (665), 6 states have internal predecessors, (665), 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) [2022-11-16 12:16:10,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:10,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 141 [2022-11-16 12:16:10,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:14,438 INFO L130 PetriNetUnfolder]: 6982/15771 cut-off events. [2022-11-16 12:16:14,438 INFO L131 PetriNetUnfolder]: For 635/635 co-relation queries the response was YES. [2022-11-16 12:16:14,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26089 conditions, 15771 events. 6982/15771 cut-off events. For 635/635 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 154406 event pairs, 3376 based on Foata normal form. 0/15486 useless extension candidates. Maximal degree in co-relation 26025. Up to 5956 conditions per place. [2022-11-16 12:16:14,553 INFO L137 encePairwiseOnDemand]: 130/141 looper letters, 30 selfloop transitions, 7 changer transitions 71/199 dead transitions. [2022-11-16 12:16:14,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 199 transitions, 620 flow [2022-11-16 12:16:14,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:16:14,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:16:14,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1069 transitions. [2022-11-16 12:16:14,558 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8423955870764381 [2022-11-16 12:16:14,558 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1069 transitions. [2022-11-16 12:16:14,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1069 transitions. [2022-11-16 12:16:14,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:14,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1069 transitions. [2022-11-16 12:16:14,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.77777777777777) internal successors, (1069), 9 states have internal predecessors, (1069), 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) [2022-11-16 12:16:14,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 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) [2022-11-16 12:16:14,568 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 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) [2022-11-16 12:16:14,568 INFO L175 Difference]: Start difference. First operand has 144 places, 133 transitions, 278 flow. Second operand 9 states and 1069 transitions. [2022-11-16 12:16:14,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 199 transitions, 620 flow [2022-11-16 12:16:14,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 199 transitions, 602 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:16:14,576 INFO L231 Difference]: Finished difference. Result has 157 places, 123 transitions, 321 flow [2022-11-16 12:16:14,576 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=321, PETRI_PLACES=157, PETRI_TRANSITIONS=123} [2022-11-16 12:16:14,577 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 9 predicate places. [2022-11-16 12:16:14,578 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 123 transitions, 321 flow [2022-11-16 12:16:14,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.83333333333333) internal successors, (665), 6 states have internal predecessors, (665), 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) [2022-11-16 12:16:14,579 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:14,579 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] [2022-11-16 12:16:14,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:16:14,580 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:16:14,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:14,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1758445449, now seen corresponding path program 1 times [2022-11-16 12:16:14,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:14,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703220639] [2022-11-16 12:16:14,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:14,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:15,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:15,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:15,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703220639] [2022-11-16 12:16:15,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703220639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:15,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:15,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:16:15,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882018877] [2022-11-16 12:16:15,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:15,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:16:15,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:15,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:16:15,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:16:15,081 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 141 [2022-11-16 12:16:15,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 123 transitions, 321 flow. Second operand has 7 states, 7 states have (on average 110.71428571428571) internal successors, (775), 7 states have internal predecessors, (775), 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) [2022-11-16 12:16:15,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:15,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 141 [2022-11-16 12:16:15,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:17,321 INFO L130 PetriNetUnfolder]: 5082/8041 cut-off events. [2022-11-16 12:16:17,322 INFO L131 PetriNetUnfolder]: For 14429/14429 co-relation queries the response was YES. [2022-11-16 12:16:17,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24170 conditions, 8041 events. 5082/8041 cut-off events. For 14429/14429 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 52166 event pairs, 820 based on Foata normal form. 184/8127 useless extension candidates. Maximal degree in co-relation 24096. Up to 3822 conditions per place. [2022-11-16 12:16:17,410 INFO L137 encePairwiseOnDemand]: 133/141 looper letters, 36 selfloop transitions, 5 changer transitions 64/196 dead transitions. [2022-11-16 12:16:17,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 196 transitions, 887 flow [2022-11-16 12:16:17,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:16:17,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:16:17,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1183 transitions. [2022-11-16 12:16:17,415 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8390070921985816 [2022-11-16 12:16:17,416 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1183 transitions. [2022-11-16 12:16:17,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1183 transitions. [2022-11-16 12:16:17,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:17,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1183 transitions. [2022-11-16 12:16:17,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 118.3) internal successors, (1183), 10 states have internal predecessors, (1183), 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) [2022-11-16 12:16:17,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 141.0) internal successors, (1551), 11 states have internal predecessors, (1551), 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) [2022-11-16 12:16:17,424 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 141.0) internal successors, (1551), 11 states have internal predecessors, (1551), 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) [2022-11-16 12:16:17,424 INFO L175 Difference]: Start difference. First operand has 157 places, 123 transitions, 321 flow. Second operand 10 states and 1183 transitions. [2022-11-16 12:16:17,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 196 transitions, 887 flow [2022-11-16 12:16:17,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 196 transitions, 866 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-11-16 12:16:17,496 INFO L231 Difference]: Finished difference. Result has 149 places, 123 transitions, 335 flow [2022-11-16 12:16:17,496 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=335, PETRI_PLACES=149, PETRI_TRANSITIONS=123} [2022-11-16 12:16:17,497 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 1 predicate places. [2022-11-16 12:16:17,497 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 123 transitions, 335 flow [2022-11-16 12:16:17,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.71428571428571) internal successors, (775), 7 states have internal predecessors, (775), 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) [2022-11-16 12:16:17,498 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:17,498 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] [2022-11-16 12:16:17,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:16:17,499 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:16:17,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:17,499 INFO L85 PathProgramCache]: Analyzing trace with hash 135607306, now seen corresponding path program 1 times [2022-11-16 12:16:17,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:17,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523028094] [2022-11-16 12:16:17,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:17,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:17,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:17,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:17,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523028094] [2022-11-16 12:16:17,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523028094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:17,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:17,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:16:17,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055777394] [2022-11-16 12:16:17,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:17,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:16:17,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:17,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:16:17,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:16:17,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 141 [2022-11-16 12:16:17,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 123 transitions, 335 flow. Second operand has 7 states, 7 states have (on average 110.57142857142857) internal successors, (774), 7 states have internal predecessors, (774), 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) [2022-11-16 12:16:17,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:17,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 141 [2022-11-16 12:16:17,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:19,727 INFO L130 PetriNetUnfolder]: 4069/6719 cut-off events. [2022-11-16 12:16:19,727 INFO L131 PetriNetUnfolder]: For 12455/12455 co-relation queries the response was YES. [2022-11-16 12:16:19,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19808 conditions, 6719 events. 4069/6719 cut-off events. For 12455/12455 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 43281 event pairs, 1744 based on Foata normal form. 144/6631 useless extension candidates. Maximal degree in co-relation 19728. Up to 3239 conditions per place. [2022-11-16 12:16:19,799 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 40 selfloop transitions, 3 changer transitions 58/192 dead transitions. [2022-11-16 12:16:19,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 192 transitions, 854 flow [2022-11-16 12:16:19,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:16:19,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:16:19,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1071 transitions. [2022-11-16 12:16:19,803 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8439716312056738 [2022-11-16 12:16:19,804 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1071 transitions. [2022-11-16 12:16:19,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1071 transitions. [2022-11-16 12:16:19,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:19,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1071 transitions. [2022-11-16 12:16:19,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 119.0) internal successors, (1071), 9 states have internal predecessors, (1071), 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) [2022-11-16 12:16:19,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 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) [2022-11-16 12:16:19,812 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 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) [2022-11-16 12:16:19,812 INFO L175 Difference]: Start difference. First operand has 149 places, 123 transitions, 335 flow. Second operand 9 states and 1071 transitions. [2022-11-16 12:16:19,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 192 transitions, 854 flow [2022-11-16 12:16:19,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 192 transitions, 814 flow, removed 14 selfloop flow, removed 9 redundant places. [2022-11-16 12:16:19,883 INFO L231 Difference]: Finished difference. Result has 149 places, 123 transitions, 336 flow [2022-11-16 12:16:19,883 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=336, PETRI_PLACES=149, PETRI_TRANSITIONS=123} [2022-11-16 12:16:19,884 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 1 predicate places. [2022-11-16 12:16:19,884 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 123 transitions, 336 flow [2022-11-16 12:16:19,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.57142857142857) internal successors, (774), 7 states have internal predecessors, (774), 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) [2022-11-16 12:16:19,885 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:19,885 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] [2022-11-16 12:16:19,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:16:19,886 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:16:19,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:19,887 INFO L85 PathProgramCache]: Analyzing trace with hash 492884976, now seen corresponding path program 1 times [2022-11-16 12:16:19,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:19,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708551232] [2022-11-16 12:16:19,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:19,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:20,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:20,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:20,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708551232] [2022-11-16 12:16:20,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708551232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:20,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:20,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:16:20,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198078803] [2022-11-16 12:16:20,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:20,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:16:20,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:20,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:16:20,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:16:20,279 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 141 [2022-11-16 12:16:20,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 123 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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) [2022-11-16 12:16:20,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:20,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 141 [2022-11-16 12:16:20,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:22,844 INFO L130 PetriNetUnfolder]: 7775/14013 cut-off events. [2022-11-16 12:16:22,844 INFO L131 PetriNetUnfolder]: For 3775/3855 co-relation queries the response was YES. [2022-11-16 12:16:22,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28433 conditions, 14013 events. 7775/14013 cut-off events. For 3775/3855 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 116542 event pairs, 503 based on Foata normal form. 0/13459 useless extension candidates. Maximal degree in co-relation 28359. Up to 4021 conditions per place. [2022-11-16 12:16:22,982 INFO L137 encePairwiseOnDemand]: 130/141 looper letters, 79 selfloop transitions, 18 changer transitions 8/205 dead transitions. [2022-11-16 12:16:22,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 205 transitions, 716 flow [2022-11-16 12:16:22,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:16:22,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:16:22,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1247 transitions. [2022-11-16 12:16:22,986 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8843971631205674 [2022-11-16 12:16:22,986 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1247 transitions. [2022-11-16 12:16:22,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1247 transitions. [2022-11-16 12:16:22,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:22,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1247 transitions. [2022-11-16 12:16:22,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 124.7) internal successors, (1247), 10 states have internal predecessors, (1247), 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) [2022-11-16 12:16:22,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 141.0) internal successors, (1551), 11 states have internal predecessors, (1551), 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) [2022-11-16 12:16:22,993 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 141.0) internal successors, (1551), 11 states have internal predecessors, (1551), 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) [2022-11-16 12:16:22,994 INFO L175 Difference]: Start difference. First operand has 149 places, 123 transitions, 336 flow. Second operand 10 states and 1247 transitions. [2022-11-16 12:16:22,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 205 transitions, 716 flow [2022-11-16 12:16:23,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 205 transitions, 698 flow, removed 6 selfloop flow, removed 8 redundant places. [2022-11-16 12:16:23,018 INFO L231 Difference]: Finished difference. Result has 150 places, 139 transitions, 450 flow [2022-11-16 12:16:23,019 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=450, PETRI_PLACES=150, PETRI_TRANSITIONS=139} [2022-11-16 12:16:23,019 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 2 predicate places. [2022-11-16 12:16:23,020 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 139 transitions, 450 flow [2022-11-16 12:16:23,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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) [2022-11-16 12:16:23,020 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:23,020 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] [2022-11-16 12:16:23,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:16:23,021 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:16:23,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:23,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1808461603, now seen corresponding path program 1 times [2022-11-16 12:16:23,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:23,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647485988] [2022-11-16 12:16:23,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:23,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:23,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:23,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:23,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647485988] [2022-11-16 12:16:23,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647485988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:23,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:23,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:16:23,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024208684] [2022-11-16 12:16:23,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:23,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:16:23,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:23,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:16:23,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:16:23,285 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 141 [2022-11-16 12:16:23,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 139 transitions, 450 flow. Second operand has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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) [2022-11-16 12:16:23,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:23,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 141 [2022-11-16 12:16:23,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:25,649 INFO L130 PetriNetUnfolder]: 7316/13448 cut-off events. [2022-11-16 12:16:25,649 INFO L131 PetriNetUnfolder]: For 14806/14942 co-relation queries the response was YES. [2022-11-16 12:16:25,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36952 conditions, 13448 events. 7316/13448 cut-off events. For 14806/14942 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 114435 event pairs, 468 based on Foata normal form. 233/13338 useless extension candidates. Maximal degree in co-relation 36877. Up to 2667 conditions per place. [2022-11-16 12:16:25,780 INFO L137 encePairwiseOnDemand]: 130/141 looper letters, 108 selfloop transitions, 36 changer transitions 2/246 dead transitions. [2022-11-16 12:16:25,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 246 transitions, 1162 flow [2022-11-16 12:16:25,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:16:25,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:16:25,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1624 transitions. [2022-11-16 12:16:25,785 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8859792689579924 [2022-11-16 12:16:25,785 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1624 transitions. [2022-11-16 12:16:25,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1624 transitions. [2022-11-16 12:16:25,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:25,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1624 transitions. [2022-11-16 12:16:25,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 124.92307692307692) internal successors, (1624), 13 states have internal predecessors, (1624), 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) [2022-11-16 12:16:25,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 141.0) internal successors, (1974), 14 states have internal predecessors, (1974), 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) [2022-11-16 12:16:25,794 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 141.0) internal successors, (1974), 14 states have internal predecessors, (1974), 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) [2022-11-16 12:16:25,795 INFO L175 Difference]: Start difference. First operand has 150 places, 139 transitions, 450 flow. Second operand 13 states and 1624 transitions. [2022-11-16 12:16:25,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 246 transitions, 1162 flow [2022-11-16 12:16:25,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 246 transitions, 1160 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:16:25,951 INFO L231 Difference]: Finished difference. Result has 167 places, 159 transitions, 735 flow [2022-11-16 12:16:25,952 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=735, PETRI_PLACES=167, PETRI_TRANSITIONS=159} [2022-11-16 12:16:25,954 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 19 predicate places. [2022-11-16 12:16:25,955 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 159 transitions, 735 flow [2022-11-16 12:16:25,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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) [2022-11-16 12:16:25,957 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:25,957 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] [2022-11-16 12:16:25,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:16:25,957 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:16:25,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:25,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1985474483, now seen corresponding path program 1 times [2022-11-16 12:16:25,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:25,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363209514] [2022-11-16 12:16:25,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:25,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:26,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:26,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:26,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363209514] [2022-11-16 12:16:26,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363209514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:26,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:26,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:16:26,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986112294] [2022-11-16 12:16:26,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:26,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:16:26,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:26,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:16:26,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:16:26,436 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 141 [2022-11-16 12:16:26,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 159 transitions, 735 flow. Second operand has 8 states, 8 states have (on average 116.125) internal successors, (929), 8 states have internal predecessors, (929), 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) [2022-11-16 12:16:26,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:26,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 141 [2022-11-16 12:16:26,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:29,424 INFO L130 PetriNetUnfolder]: 7038/12964 cut-off events. [2022-11-16 12:16:29,425 INFO L131 PetriNetUnfolder]: For 34751/34937 co-relation queries the response was YES. [2022-11-16 12:16:29,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43887 conditions, 12964 events. 7038/12964 cut-off events. For 34751/34937 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 111438 event pairs, 429 based on Foata normal form. 141/12773 useless extension candidates. Maximal degree in co-relation 43804. Up to 2605 conditions per place. [2022-11-16 12:16:29,535 INFO L137 encePairwiseOnDemand]: 130/141 looper letters, 105 selfloop transitions, 54 changer transitions 32/291 dead transitions. [2022-11-16 12:16:29,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 291 transitions, 1803 flow [2022-11-16 12:16:29,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:16:29,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:16:29,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2002 transitions. [2022-11-16 12:16:29,541 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8874113475177305 [2022-11-16 12:16:29,541 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2002 transitions. [2022-11-16 12:16:29,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2002 transitions. [2022-11-16 12:16:29,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:29,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2002 transitions. [2022-11-16 12:16:29,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 125.125) internal successors, (2002), 16 states have internal predecessors, (2002), 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) [2022-11-16 12:16:29,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 141.0) internal successors, (2397), 17 states have internal predecessors, (2397), 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) [2022-11-16 12:16:29,553 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 141.0) internal successors, (2397), 17 states have internal predecessors, (2397), 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) [2022-11-16 12:16:29,553 INFO L175 Difference]: Start difference. First operand has 167 places, 159 transitions, 735 flow. Second operand 16 states and 2002 transitions. [2022-11-16 12:16:29,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 291 transitions, 1803 flow [2022-11-16 12:16:30,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 291 transitions, 1702 flow, removed 42 selfloop flow, removed 4 redundant places. [2022-11-16 12:16:30,476 INFO L231 Difference]: Finished difference. Result has 182 places, 183 transitions, 1077 flow [2022-11-16 12:16:30,477 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1077, PETRI_PLACES=182, PETRI_TRANSITIONS=183} [2022-11-16 12:16:30,477 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 34 predicate places. [2022-11-16 12:16:30,477 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 183 transitions, 1077 flow [2022-11-16 12:16:30,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 116.125) internal successors, (929), 8 states have internal predecessors, (929), 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) [2022-11-16 12:16:30,478 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:30,478 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] [2022-11-16 12:16:30,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:16:30,479 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:16:30,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:30,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1487200342, now seen corresponding path program 1 times [2022-11-16 12:16:30,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:30,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832183502] [2022-11-16 12:16:30,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:30,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:31,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:31,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:31,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832183502] [2022-11-16 12:16:31,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832183502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:31,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:31,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:16:31,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084611228] [2022-11-16 12:16:31,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:31,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:16:31,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:31,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:16:31,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:16:31,636 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 141 [2022-11-16 12:16:31,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 183 transitions, 1077 flow. Second operand has 11 states, 11 states have (on average 112.27272727272727) internal successors, (1235), 11 states have internal predecessors, (1235), 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) [2022-11-16 12:16:31,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:31,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 141 [2022-11-16 12:16:31,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:33,032 INFO L130 PetriNetUnfolder]: 2294/7705 cut-off events. [2022-11-16 12:16:33,033 INFO L131 PetriNetUnfolder]: For 39370/41847 co-relation queries the response was YES. [2022-11-16 12:16:33,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28645 conditions, 7705 events. 2294/7705 cut-off events. For 39370/41847 co-relation queries the response was YES. Maximal size of possible extension queue 859. Compared 92602 event pairs, 91 based on Foata normal form. 9/7253 useless extension candidates. Maximal degree in co-relation 28549. Up to 1832 conditions per place. [2022-11-16 12:16:33,105 INFO L137 encePairwiseOnDemand]: 130/141 looper letters, 49 selfloop transitions, 11 changer transitions 14/231 dead transitions. [2022-11-16 12:16:33,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 231 transitions, 1367 flow [2022-11-16 12:16:33,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:16:33,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:16:33,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1285 transitions. [2022-11-16 12:16:33,108 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8284977433913604 [2022-11-16 12:16:33,109 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1285 transitions. [2022-11-16 12:16:33,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1285 transitions. [2022-11-16 12:16:33,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:33,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1285 transitions. [2022-11-16 12:16:33,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 116.81818181818181) internal successors, (1285), 11 states have internal predecessors, (1285), 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) [2022-11-16 12:16:33,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 141.0) internal successors, (1692), 12 states have internal predecessors, (1692), 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) [2022-11-16 12:16:33,117 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 141.0) internal successors, (1692), 12 states have internal predecessors, (1692), 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) [2022-11-16 12:16:33,117 INFO L175 Difference]: Start difference. First operand has 182 places, 183 transitions, 1077 flow. Second operand 11 states and 1285 transitions. [2022-11-16 12:16:33,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 231 transitions, 1367 flow [2022-11-16 12:16:34,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 231 transitions, 1060 flow, removed 114 selfloop flow, removed 11 redundant places. [2022-11-16 12:16:34,303 INFO L231 Difference]: Finished difference. Result has 187 places, 192 transitions, 838 flow [2022-11-16 12:16:34,304 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=838, PETRI_PLACES=187, PETRI_TRANSITIONS=192} [2022-11-16 12:16:34,304 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 39 predicate places. [2022-11-16 12:16:34,305 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 192 transitions, 838 flow [2022-11-16 12:16:34,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 112.27272727272727) internal successors, (1235), 11 states have internal predecessors, (1235), 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) [2022-11-16 12:16:34,305 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:34,306 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] [2022-11-16 12:16:34,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:16:34,306 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:16:34,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:34,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1635793696, now seen corresponding path program 2 times [2022-11-16 12:16:34,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:34,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929749339] [2022-11-16 12:16:34,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:34,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:34,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:34,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:34,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929749339] [2022-11-16 12:16:34,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929749339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:34,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:34,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:16:34,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152947783] [2022-11-16 12:16:34,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:34,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:16:34,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:34,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:16:34,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:16:34,699 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 141 [2022-11-16 12:16:34,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 192 transitions, 838 flow. Second operand has 9 states, 9 states have (on average 116.22222222222223) internal successors, (1046), 9 states have internal predecessors, (1046), 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) [2022-11-16 12:16:34,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:34,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 141 [2022-11-16 12:16:34,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:38,887 INFO L130 PetriNetUnfolder]: 12914/24819 cut-off events. [2022-11-16 12:16:38,887 INFO L131 PetriNetUnfolder]: For 33888/34645 co-relation queries the response was YES. [2022-11-16 12:16:39,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76217 conditions, 24819 events. 12914/24819 cut-off events. For 33888/34645 co-relation queries the response was YES. Maximal size of possible extension queue 1617. Compared 246920 event pairs, 541 based on Foata normal form. 197/24637 useless extension candidates. Maximal degree in co-relation 76186. Up to 2886 conditions per place. [2022-11-16 12:16:39,121 INFO L137 encePairwiseOnDemand]: 130/141 looper letters, 132 selfloop transitions, 59 changer transitions 53/344 dead transitions. [2022-11-16 12:16:39,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 344 transitions, 2048 flow [2022-11-16 12:16:39,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:16:39,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-16 12:16:39,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2329 transitions. [2022-11-16 12:16:39,128 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8693542366554684 [2022-11-16 12:16:39,128 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2329 transitions. [2022-11-16 12:16:39,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2329 transitions. [2022-11-16 12:16:39,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:39,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2329 transitions. [2022-11-16 12:16:39,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 122.57894736842105) internal successors, (2329), 19 states have internal predecessors, (2329), 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) [2022-11-16 12:16:39,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 141.0) internal successors, (2820), 20 states have internal predecessors, (2820), 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) [2022-11-16 12:16:39,143 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 141.0) internal successors, (2820), 20 states have internal predecessors, (2820), 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) [2022-11-16 12:16:39,144 INFO L175 Difference]: Start difference. First operand has 187 places, 192 transitions, 838 flow. Second operand 19 states and 2329 transitions. [2022-11-16 12:16:39,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 344 transitions, 2048 flow [2022-11-16 12:16:41,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 344 transitions, 2021 flow, removed 9 selfloop flow, removed 7 redundant places. [2022-11-16 12:16:41,763 INFO L231 Difference]: Finished difference. Result has 202 places, 188 transitions, 956 flow [2022-11-16 12:16:41,763 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=956, PETRI_PLACES=202, PETRI_TRANSITIONS=188} [2022-11-16 12:16:41,763 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 54 predicate places. [2022-11-16 12:16:41,764 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 188 transitions, 956 flow [2022-11-16 12:16:41,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 116.22222222222223) internal successors, (1046), 9 states have internal predecessors, (1046), 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) [2022-11-16 12:16:41,764 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:41,764 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] [2022-11-16 12:16:41,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:16:41,764 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:16:41,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:41,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1259676263, now seen corresponding path program 1 times [2022-11-16 12:16:41,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:41,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056840181] [2022-11-16 12:16:41,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:41,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:42,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:42,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:42,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056840181] [2022-11-16 12:16:42,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056840181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:42,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:42,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:16:42,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849568509] [2022-11-16 12:16:42,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:42,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:16:42,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:42,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:16:42,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:16:42,711 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 141 [2022-11-16 12:16:42,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 188 transitions, 956 flow. Second operand has 11 states, 11 states have (on average 106.9090909090909) internal successors, (1176), 11 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) [2022-11-16 12:16:42,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:42,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 141 [2022-11-16 12:16:42,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:49,099 INFO L130 PetriNetUnfolder]: 11708/37900 cut-off events. [2022-11-16 12:16:49,099 INFO L131 PetriNetUnfolder]: For 85658/90793 co-relation queries the response was YES. [2022-11-16 12:16:49,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121325 conditions, 37900 events. 11708/37900 cut-off events. For 85658/90793 co-relation queries the response was YES. Maximal size of possible extension queue 4773. Compared 592307 event pairs, 189 based on Foata normal form. 6/35535 useless extension candidates. Maximal degree in co-relation 121223. Up to 4316 conditions per place. [2022-11-16 12:16:49,691 INFO L137 encePairwiseOnDemand]: 122/141 looper letters, 120 selfloop transitions, 31 changer transitions 17/314 dead transitions. [2022-11-16 12:16:49,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 314 transitions, 1863 flow [2022-11-16 12:16:49,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:16:49,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-16 12:16:49,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2436 transitions. [2022-11-16 12:16:49,699 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7852998065764023 [2022-11-16 12:16:49,699 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2436 transitions. [2022-11-16 12:16:49,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2436 transitions. [2022-11-16 12:16:49,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:49,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2436 transitions. [2022-11-16 12:16:49,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 110.72727272727273) internal successors, (2436), 22 states have internal predecessors, (2436), 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) [2022-11-16 12:16:49,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 141.0) internal successors, (3243), 23 states have internal predecessors, (3243), 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) [2022-11-16 12:16:49,717 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 141.0) internal successors, (3243), 23 states have internal predecessors, (3243), 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) [2022-11-16 12:16:49,717 INFO L175 Difference]: Start difference. First operand has 202 places, 188 transitions, 956 flow. Second operand 22 states and 2436 transitions. [2022-11-16 12:16:49,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 314 transitions, 1863 flow [2022-11-16 12:17:01,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 314 transitions, 1602 flow, removed 82 selfloop flow, removed 18 redundant places. [2022-11-16 12:17:01,794 INFO L231 Difference]: Finished difference. Result has 219 places, 210 transitions, 1070 flow [2022-11-16 12:17:01,794 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1070, PETRI_PLACES=219, PETRI_TRANSITIONS=210} [2022-11-16 12:17:01,795 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 71 predicate places. [2022-11-16 12:17:01,795 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 210 transitions, 1070 flow [2022-11-16 12:17:01,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.9090909090909) internal successors, (1176), 11 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) [2022-11-16 12:17:01,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:17:01,796 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] [2022-11-16 12:17:01,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:17:01,797 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:17:01,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:01,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1979366665, now seen corresponding path program 2 times [2022-11-16 12:17:01,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:01,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647533202] [2022-11-16 12:17:01,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:01,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:02,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:02,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:02,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647533202] [2022-11-16 12:17:02,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647533202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:02,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:02,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:17:02,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848271388] [2022-11-16 12:17:02,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:02,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:17:02,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:02,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:17:02,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:17:02,483 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 141 [2022-11-16 12:17:02,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 210 transitions, 1070 flow. Second operand has 11 states, 11 states have (on average 106.9090909090909) internal successors, (1176), 11 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) [2022-11-16 12:17:02,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:17:02,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 141 [2022-11-16 12:17:02,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:17:15,827 INFO L130 PetriNetUnfolder]: 24069/77779 cut-off events. [2022-11-16 12:17:15,827 INFO L131 PetriNetUnfolder]: For 121022/123258 co-relation queries the response was YES. [2022-11-16 12:17:16,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222215 conditions, 77779 events. 24069/77779 cut-off events. For 121022/123258 co-relation queries the response was YES. Maximal size of possible extension queue 9488. Compared 1324681 event pairs, 747 based on Foata normal form. 7/72879 useless extension candidates. Maximal degree in co-relation 222159. Up to 8778 conditions per place. [2022-11-16 12:17:17,177 INFO L137 encePairwiseOnDemand]: 123/141 looper letters, 87 selfloop transitions, 47 changer transitions 24/306 dead transitions. [2022-11-16 12:17:17,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 306 transitions, 1901 flow [2022-11-16 12:17:17,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:17:17,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:17:17,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1788 transitions. [2022-11-16 12:17:17,216 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7925531914893617 [2022-11-16 12:17:17,217 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1788 transitions. [2022-11-16 12:17:17,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1788 transitions. [2022-11-16 12:17:17,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:17:17,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1788 transitions. [2022-11-16 12:17:17,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 111.75) internal successors, (1788), 16 states have internal predecessors, (1788), 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) [2022-11-16 12:17:17,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 141.0) internal successors, (2397), 17 states have internal predecessors, (2397), 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) [2022-11-16 12:17:17,232 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 141.0) internal successors, (2397), 17 states have internal predecessors, (2397), 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) [2022-11-16 12:17:17,232 INFO L175 Difference]: Start difference. First operand has 219 places, 210 transitions, 1070 flow. Second operand 16 states and 1788 transitions. [2022-11-16 12:17:17,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 306 transitions, 1901 flow [2022-11-16 12:18:29,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 306 transitions, 1814 flow, removed 27 selfloop flow, removed 12 redundant places. [2022-11-16 12:18:29,597 INFO L231 Difference]: Finished difference. Result has 224 places, 230 transitions, 1309 flow [2022-11-16 12:18:29,597 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1309, PETRI_PLACES=224, PETRI_TRANSITIONS=230} [2022-11-16 12:18:29,598 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 76 predicate places. [2022-11-16 12:18:29,598 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 230 transitions, 1309 flow [2022-11-16 12:18:29,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.9090909090909) internal successors, (1176), 11 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) [2022-11-16 12:18:29,599 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:18:29,599 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] [2022-11-16 12:18:29,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:18:29,599 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:18:29,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:29,600 INFO L85 PathProgramCache]: Analyzing trace with hash 188869621, now seen corresponding path program 3 times [2022-11-16 12:18:29,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:18:29,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766147214] [2022-11-16 12:18:29,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:29,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:18:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:29,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:29,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:18:29,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766147214] [2022-11-16 12:18:29,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766147214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:18:29,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:18:29,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:18:29,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886244949] [2022-11-16 12:18:29,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:18:29,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:18:29,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:18:29,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:18:29,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:18:29,943 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 141 [2022-11-16 12:18:29,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 230 transitions, 1309 flow. Second operand has 7 states, 7 states have (on average 117.14285714285714) internal successors, (820), 7 states have internal predecessors, (820), 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) [2022-11-16 12:18:29,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:18:29,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 141 [2022-11-16 12:18:29,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:18:40,258 INFO L130 PetriNetUnfolder]: 21005/66641 cut-off events. [2022-11-16 12:18:40,258 INFO L131 PetriNetUnfolder]: For 111089/114674 co-relation queries the response was YES. [2022-11-16 12:18:40,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193527 conditions, 66641 events. 21005/66641 cut-off events. For 111089/114674 co-relation queries the response was YES. Maximal size of possible extension queue 8793. Compared 1114147 event pairs, 414 based on Foata normal form. 19/62299 useless extension candidates. Maximal degree in co-relation 193472. Up to 7875 conditions per place. [2022-11-16 12:18:41,117 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 99 selfloop transitions, 8 changer transitions 9/280 dead transitions. [2022-11-16 12:18:41,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 280 transitions, 1926 flow [2022-11-16 12:18:41,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:18:41,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:18:41,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 838 transitions. [2022-11-16 12:18:41,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8490374873353597 [2022-11-16 12:18:41,120 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 838 transitions. [2022-11-16 12:18:41,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 838 transitions. [2022-11-16 12:18:41,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:18:41,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 838 transitions. [2022-11-16 12:18:41,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 119.71428571428571) internal successors, (838), 7 states have internal predecessors, (838), 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) [2022-11-16 12:18:41,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 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) [2022-11-16 12:18:41,126 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 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) [2022-11-16 12:18:41,127 INFO L175 Difference]: Start difference. First operand has 224 places, 230 transitions, 1309 flow. Second operand 7 states and 838 transitions. [2022-11-16 12:18:41,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 280 transitions, 1926 flow [2022-11-16 12:19:38,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 280 transitions, 1885 flow, removed 10 selfloop flow, removed 8 redundant places. [2022-11-16 12:19:38,052 INFO L231 Difference]: Finished difference. Result has 221 places, 233 transitions, 1344 flow [2022-11-16 12:19:38,052 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1344, PETRI_PLACES=221, PETRI_TRANSITIONS=233} [2022-11-16 12:19:38,053 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 73 predicate places. [2022-11-16 12:19:38,053 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 233 transitions, 1344 flow [2022-11-16 12:19:38,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 117.14285714285714) internal successors, (820), 7 states have internal predecessors, (820), 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) [2022-11-16 12:19:38,054 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:19:38,054 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] [2022-11-16 12:19:38,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:19:38,055 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:19:38,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:38,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1143629389, now seen corresponding path program 4 times [2022-11-16 12:19:38,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:38,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312865143] [2022-11-16 12:19:38,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:38,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:39,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:39,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:39,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312865143] [2022-11-16 12:19:39,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312865143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:39,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:19:39,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:19:39,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862154469] [2022-11-16 12:19:39,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:39,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:19:39,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:39,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:19:39,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:19:39,815 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 141 [2022-11-16 12:19:39,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 233 transitions, 1344 flow. Second operand has 12 states, 12 states have (on average 103.0) internal successors, (1236), 12 states have internal predecessors, (1236), 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) [2022-11-16 12:19:39,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:19:39,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 141 [2022-11-16 12:19:39,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand