./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0596a-cf29-4690-9e37-5e03d1df474e/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0596a-cf29-4690-9e37-5e03d1df474e/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0596a-cf29-4690-9e37-5e03d1df474e/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0596a-cf29-4690-9e37-5e03d1df474e/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0596a-cf29-4690-9e37-5e03d1df474e/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0596a-cf29-4690-9e37-5e03d1df474e/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9565dcbef2b519c6326563c41ab6633c2e0b59b7d9ee2c8626de0cd3767b77b1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:28:40,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:28:40,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:28:40,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:28:40,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:28:40,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:28:40,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:28:40,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:28:40,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:28:40,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:28:40,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:28:40,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:28:40,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:28:40,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:28:40,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:28:40,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:28:40,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:28:40,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:28:40,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:28:40,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:28:40,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:28:40,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:28:40,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:28:40,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:28:40,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:28:40,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:28:40,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:28:40,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:28:40,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:28:40,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:28:40,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:28:40,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:28:40,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:28:40,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:28:40,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:28:40,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:28:40,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:28:40,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:28:40,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:28:40,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:28:40,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:28:40,225 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0596a-cf29-4690-9e37-5e03d1df474e/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:28:40,288 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:28:40,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:28:40,289 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:28:40,289 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:28:40,290 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:28:40,290 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:28:40,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:28:40,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:28:40,291 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:28:40,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:28:40,292 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:28:40,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:28:40,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:28:40,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:28:40,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:28:40,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:28:40,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:28:40,297 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:28:40,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:28:40,298 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:28:40,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:28:40,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:28:40,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:28:40,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:28:40,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:28:40,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:28:40,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:28:40,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:28:40,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:28:40,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:28:40,312 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:28:40,312 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:28:40,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:28:40,313 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_ace0596a-cf29-4690-9e37-5e03d1df474e/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0596a-cf29-4690-9e37-5e03d1df474e/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9565dcbef2b519c6326563c41ab6633c2e0b59b7d9ee2c8626de0cd3767b77b1 [2022-10-17 10:28:40,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:28:40,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:28:40,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:28:40,575 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:28:40,576 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:28:40,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0596a-cf29-4690-9e37-5e03d1df474e/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i [2022-10-17 10:28:40,631 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0596a-cf29-4690-9e37-5e03d1df474e/bin/uautomizer-J5u9QxTXDZ/data/be96d6bd9/ad52c562c4dc4f78a52e41d4c00cc057/FLAG3bf13bdad [2022-10-17 10:28:41,198 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:28:41,198 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0596a-cf29-4690-9e37-5e03d1df474e/sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i [2022-10-17 10:28:41,214 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0596a-cf29-4690-9e37-5e03d1df474e/bin/uautomizer-J5u9QxTXDZ/data/be96d6bd9/ad52c562c4dc4f78a52e41d4c00cc057/FLAG3bf13bdad [2022-10-17 10:28:41,606 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0596a-cf29-4690-9e37-5e03d1df474e/bin/uautomizer-J5u9QxTXDZ/data/be96d6bd9/ad52c562c4dc4f78a52e41d4c00cc057 [2022-10-17 10:28:41,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:28:41,610 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:28:41,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:28:41,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:28:41,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:28:41,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:28:41" (1/1) ... [2022-10-17 10:28:41,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d904dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:41, skipping insertion in model container [2022-10-17 10:28:41,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:28:41" (1/1) ... [2022-10-17 10:28:41,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:28:41,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:28:41,844 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0596a-cf29-4690-9e37-5e03d1df474e/sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i[966,979] [2022-10-17 10:28:42,046 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:28:42,054 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:28:42,078 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0596a-cf29-4690-9e37-5e03d1df474e/sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i[966,979] [2022-10-17 10:28:42,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:28:42,200 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:28:42,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:42 WrapperNode [2022-10-17 10:28:42,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:28:42,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:28:42,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:28:42,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:28:42,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:42" (1/1) ... [2022-10-17 10:28:42,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:42" (1/1) ... [2022-10-17 10:28:42,293 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 290 [2022-10-17 10:28:42,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:28:42,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:28:42,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:28:42,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:28:42,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:42" (1/1) ... [2022-10-17 10:28:42,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:42" (1/1) ... [2022-10-17 10:28:42,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:42" (1/1) ... [2022-10-17 10:28:42,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:42" (1/1) ... [2022-10-17 10:28:42,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:42" (1/1) ... [2022-10-17 10:28:42,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:42" (1/1) ... [2022-10-17 10:28:42,325 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:42" (1/1) ... [2022-10-17 10:28:42,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:42" (1/1) ... [2022-10-17 10:28:42,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:28:42,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:28:42,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:28:42,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:28:42,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:42" (1/1) ... [2022-10-17 10:28:42,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:28:42,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0596a-cf29-4690-9e37-5e03d1df474e/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:28:42,380 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0596a-cf29-4690-9e37-5e03d1df474e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:28:42,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace0596a-cf29-4690-9e37-5e03d1df474e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:28:42,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:28:42,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:28:42,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:28:42,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:28:42,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:28:42,429 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-10-17 10:28:42,429 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-10-17 10:28:42,429 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-10-17 10:28:42,429 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-10-17 10:28:42,430 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-10-17 10:28:42,430 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-10-17 10:28:42,430 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-10-17 10:28:42,430 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-10-17 10:28:42,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:28:42,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:28:42,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:28:42,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:28:42,432 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:28:42,571 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:28:42,573 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:28:43,348 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:28:43,864 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:28:43,864 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:28:43,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:28:43 BoogieIcfgContainer [2022-10-17 10:28:43,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:28:43,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:28:43,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:28:43,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:28:43,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:28:41" (1/3) ... [2022-10-17 10:28:43,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371160fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:28:43, skipping insertion in model container [2022-10-17 10:28:43,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:42" (2/3) ... [2022-10-17 10:28:43,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371160fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:28:43, skipping insertion in model container [2022-10-17 10:28:43,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:28:43" (3/3) ... [2022-10-17 10:28:43,881 INFO L112 eAbstractionObserver]: Analyzing ICFG mix030_power.opt_pso.opt_rmo.opt.i [2022-10-17 10:28:43,890 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:28:43,900 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:28:43,900 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 10:28:43,901 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:28:44,006 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:28:44,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 135 transitions, 290 flow [2022-10-17 10:28:44,153 INFO L130 PetriNetUnfolder]: 2/131 cut-off events. [2022-10-17 10:28:44,154 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:28:44,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 131 events. 2/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-10-17 10:28:44,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 135 transitions, 290 flow [2022-10-17 10:28:44,170 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 131 transitions, 274 flow [2022-10-17 10:28:44,190 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:28:44,202 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;@5439f778, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:28:44,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-10-17 10:28:44,219 INFO L130 PetriNetUnfolder]: 0/76 cut-off events. [2022-10-17 10:28:44,219 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:28:44,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:28:44,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:44,220 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:28:44,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:44,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1442612500, now seen corresponding path program 1 times [2022-10-17 10:28:44,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:44,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733082946] [2022-10-17 10:28:44,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:44,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:44,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:28:44,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:44,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733082946] [2022-10-17 10:28:44,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733082946] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:44,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:44,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:28:44,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499869101] [2022-10-17 10:28:44,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:44,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:28:44,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:45,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:28:45,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:28:45,023 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 135 [2022-10-17 10:28:45,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 131 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:45,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:28:45,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 135 [2022-10-17 10:28:45,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:28:45,292 INFO L130 PetriNetUnfolder]: 57/349 cut-off events. [2022-10-17 10:28:45,292 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-10-17 10:28:45,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 349 events. 57/349 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1368 event pairs, 11 based on Foata normal form. 14/344 useless extension candidates. Maximal degree in co-relation 422. Up to 75 conditions per place. [2022-10-17 10:28:45,301 INFO L137 encePairwiseOnDemand]: 130/135 looper letters, 14 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2022-10-17 10:28:45,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 132 transitions, 311 flow [2022-10-17 10:28:45,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:28:45,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:28:45,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 381 transitions. [2022-10-17 10:28:45,323 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9407407407407408 [2022-10-17 10:28:45,324 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 381 transitions. [2022-10-17 10:28:45,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 381 transitions. [2022-10-17 10:28:45,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:28:45,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 381 transitions. [2022-10-17 10:28:45,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:45,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:45,353 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:45,355 INFO L175 Difference]: Start difference. First operand has 142 places, 131 transitions, 274 flow. Second operand 3 states and 381 transitions. [2022-10-17 10:28:45,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 132 transitions, 311 flow [2022-10-17 10:28:45,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 132 transitions, 306 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:28:45,365 INFO L231 Difference]: Finished difference. Result has 138 places, 127 transitions, 266 flow [2022-10-17 10:28:45,368 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=138, PETRI_TRANSITIONS=127} [2022-10-17 10:28:45,375 INFO L287 CegarLoopForPetriNet]: 142 programPoint places, -4 predicate places. [2022-10-17 10:28:45,375 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 127 transitions, 266 flow [2022-10-17 10:28:45,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:45,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:28:45,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:45,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:28:45,377 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:28:45,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:45,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1620607474, now seen corresponding path program 1 times [2022-10-17 10:28:45,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:45,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639595896] [2022-10-17 10:28:45,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:45,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:46,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:28:46,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:46,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639595896] [2022-10-17 10:28:46,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639595896] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:46,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:46,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:28:46,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312976872] [2022-10-17 10:28:46,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:46,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:28:46,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:46,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:28:46,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:28:46,073 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 135 [2022-10-17 10:28:46,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 127 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:46,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:28:46,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 135 [2022-10-17 10:28:46,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:28:46,959 INFO L130 PetriNetUnfolder]: 724/2188 cut-off events. [2022-10-17 10:28:46,960 INFO L131 PetriNetUnfolder]: For 94/94 co-relation queries the response was YES. [2022-10-17 10:28:46,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3439 conditions, 2188 events. 724/2188 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 17057 event pairs, 222 based on Foata normal form. 0/2123 useless extension candidates. Maximal degree in co-relation 3384. Up to 652 conditions per place. [2022-10-17 10:28:46,983 INFO L137 encePairwiseOnDemand]: 128/135 looper letters, 22 selfloop transitions, 3 changer transitions 56/175 dead transitions. [2022-10-17 10:28:46,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 175 transitions, 514 flow [2022-10-17 10:28:46,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:28:46,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:28:46,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1069 transitions. [2022-10-17 10:28:46,989 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8798353909465021 [2022-10-17 10:28:46,989 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1069 transitions. [2022-10-17 10:28:46,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1069 transitions. [2022-10-17 10:28:46,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:28:46,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1069 transitions. [2022-10-17 10:28:46,994 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) [2022-10-17 10:28:46,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:47,000 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:47,000 INFO L175 Difference]: Start difference. First operand has 138 places, 127 transitions, 266 flow. Second operand 9 states and 1069 transitions. [2022-10-17 10:28:47,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 175 transitions, 514 flow [2022-10-17 10:28:47,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 175 transitions, 496 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:28:47,008 INFO L231 Difference]: Finished difference. Result has 151 places, 115 transitions, 277 flow [2022-10-17 10:28:47,008 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=277, PETRI_PLACES=151, PETRI_TRANSITIONS=115} [2022-10-17 10:28:47,009 INFO L287 CegarLoopForPetriNet]: 142 programPoint places, 9 predicate places. [2022-10-17 10:28:47,010 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 115 transitions, 277 flow [2022-10-17 10:28:47,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:47,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:28:47,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:47,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:28:47,011 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:28:47,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:47,012 INFO L85 PathProgramCache]: Analyzing trace with hash -256106927, now seen corresponding path program 1 times [2022-10-17 10:28:47,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:47,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054896554] [2022-10-17 10:28:47,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:47,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:47,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:28:47,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:47,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054896554] [2022-10-17 10:28:47,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054896554] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:47,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:47,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:28:47,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623622561] [2022-10-17 10:28:47,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:47,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:28:47,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:47,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:28:47,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:28:47,480 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 135 [2022-10-17 10:28:47,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 115 transitions, 277 flow. Second operand has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:47,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:28:47,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 135 [2022-10-17 10:28:47,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:28:47,976 INFO L130 PetriNetUnfolder]: 390/898 cut-off events. [2022-10-17 10:28:47,977 INFO L131 PetriNetUnfolder]: For 556/558 co-relation queries the response was YES. [2022-10-17 10:28:47,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1972 conditions, 898 events. 390/898 cut-off events. For 556/558 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5188 event pairs, 77 based on Foata normal form. 28/896 useless extension candidates. Maximal degree in co-relation 1910. Up to 281 conditions per place. [2022-10-17 10:28:47,987 INFO L137 encePairwiseOnDemand]: 129/135 looper letters, 19 selfloop transitions, 2 changer transitions 31/150 dead transitions. [2022-10-17 10:28:47,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 150 transitions, 469 flow [2022-10-17 10:28:47,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:28:47,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:28:47,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1071 transitions. [2022-10-17 10:28:47,993 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8814814814814815 [2022-10-17 10:28:47,993 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1071 transitions. [2022-10-17 10:28:47,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1071 transitions. [2022-10-17 10:28:47,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:28:47,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1071 transitions. [2022-10-17 10:28:47,998 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) [2022-10-17 10:28:48,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:48,003 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:48,003 INFO L175 Difference]: Start difference. First operand has 151 places, 115 transitions, 277 flow. Second operand 9 states and 1071 transitions. [2022-10-17 10:28:48,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 150 transitions, 469 flow [2022-10-17 10:28:48,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 150 transitions, 450 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-10-17 10:28:48,014 INFO L231 Difference]: Finished difference. Result has 142 places, 115 transitions, 286 flow [2022-10-17 10:28:48,015 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=286, PETRI_PLACES=142, PETRI_TRANSITIONS=115} [2022-10-17 10:28:48,017 INFO L287 CegarLoopForPetriNet]: 142 programPoint places, 0 predicate places. [2022-10-17 10:28:48,018 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 115 transitions, 286 flow [2022-10-17 10:28:48,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:48,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:28:48,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:48,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:28:48,019 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:28:48,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:48,020 INFO L85 PathProgramCache]: Analyzing trace with hash -999767165, now seen corresponding path program 1 times [2022-10-17 10:28:48,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:48,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845957218] [2022-10-17 10:28:48,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:48,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:48,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:28:48,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:48,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845957218] [2022-10-17 10:28:48,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845957218] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:48,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:48,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:28:48,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206688129] [2022-10-17 10:28:48,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:48,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:28:48,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:48,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:28:48,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:28:48,423 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 135 [2022-10-17 10:28:48,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 115 transitions, 286 flow. Second operand has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:48,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:28:48,425 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 135 [2022-10-17 10:28:48,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:28:49,258 INFO L130 PetriNetUnfolder]: 1054/2153 cut-off events. [2022-10-17 10:28:49,259 INFO L131 PetriNetUnfolder]: For 1735/1735 co-relation queries the response was YES. [2022-10-17 10:28:49,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4861 conditions, 2153 events. 1054/2153 cut-off events. For 1735/1735 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13998 event pairs, 443 based on Foata normal form. 48/2118 useless extension candidates. Maximal degree in co-relation 4794. Up to 875 conditions per place. [2022-10-17 10:28:49,285 INFO L137 encePairwiseOnDemand]: 128/135 looper letters, 24 selfloop transitions, 3 changer transitions 40/164 dead transitions. [2022-10-17 10:28:49,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 164 transitions, 552 flow [2022-10-17 10:28:49,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:28:49,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:28:49,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1077 transitions. [2022-10-17 10:28:49,289 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8864197530864197 [2022-10-17 10:28:49,290 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1077 transitions. [2022-10-17 10:28:49,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1077 transitions. [2022-10-17 10:28:49,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:28:49,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1077 transitions. [2022-10-17 10:28:49,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 119.66666666666667) internal successors, (1077), 9 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:49,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:49,331 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:49,331 INFO L175 Difference]: Start difference. First operand has 142 places, 115 transitions, 286 flow. Second operand 9 states and 1077 transitions. [2022-10-17 10:28:49,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 164 transitions, 552 flow [2022-10-17 10:28:49,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 164 transitions, 516 flow, removed 16 selfloop flow, removed 8 redundant places. [2022-10-17 10:28:49,360 INFO L231 Difference]: Finished difference. Result has 143 places, 117 transitions, 309 flow [2022-10-17 10:28:49,361 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=309, PETRI_PLACES=143, PETRI_TRANSITIONS=117} [2022-10-17 10:28:49,362 INFO L287 CegarLoopForPetriNet]: 142 programPoint places, 1 predicate places. [2022-10-17 10:28:49,362 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 117 transitions, 309 flow [2022-10-17 10:28:49,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:49,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:28:49,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:49,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:28:49,364 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:28:49,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:49,365 INFO L85 PathProgramCache]: Analyzing trace with hash 151472760, now seen corresponding path program 1 times [2022-10-17 10:28:49,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:49,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475693949] [2022-10-17 10:28:49,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:49,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:50,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:28:50,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:50,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475693949] [2022-10-17 10:28:50,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475693949] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:50,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:50,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:28:50,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956648769] [2022-10-17 10:28:50,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:50,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:28:50,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:50,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:28:50,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:28:50,231 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 135 [2022-10-17 10:28:50,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 117 transitions, 309 flow. Second operand has 9 states, 9 states have (on average 112.55555555555556) internal successors, (1013), 9 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:50,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:28:50,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 135 [2022-10-17 10:28:50,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:28:51,192 INFO L130 PetriNetUnfolder]: 1041/2152 cut-off events. [2022-10-17 10:28:51,193 INFO L131 PetriNetUnfolder]: For 3405/3435 co-relation queries the response was YES. [2022-10-17 10:28:51,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5683 conditions, 2152 events. 1041/2152 cut-off events. For 3405/3435 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 14106 event pairs, 413 based on Foata normal form. 56/2061 useless extension candidates. Maximal degree in co-relation 5613. Up to 857 conditions per place. [2022-10-17 10:28:51,221 INFO L137 encePairwiseOnDemand]: 123/135 looper letters, 20 selfloop transitions, 11 changer transitions 43/172 dead transitions. [2022-10-17 10:28:51,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 172 transitions, 621 flow [2022-10-17 10:28:51,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:28:51,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-10-17 10:28:51,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1631 transitions. [2022-10-17 10:28:51,227 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8629629629629629 [2022-10-17 10:28:51,227 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1631 transitions. [2022-10-17 10:28:51,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1631 transitions. [2022-10-17 10:28:51,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:28:51,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1631 transitions. [2022-10-17 10:28:51,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 116.5) internal successors, (1631), 14 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:51,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 135.0) internal successors, (2025), 15 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:51,239 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 135.0) internal successors, (2025), 15 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:51,239 INFO L175 Difference]: Start difference. First operand has 143 places, 117 transitions, 309 flow. Second operand 14 states and 1631 transitions. [2022-10-17 10:28:51,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 172 transitions, 621 flow [2022-10-17 10:28:51,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 172 transitions, 600 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-10-17 10:28:51,259 INFO L231 Difference]: Finished difference. Result has 157 places, 125 transitions, 400 flow [2022-10-17 10:28:51,260 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=400, PETRI_PLACES=157, PETRI_TRANSITIONS=125} [2022-10-17 10:28:51,262 INFO L287 CegarLoopForPetriNet]: 142 programPoint places, 15 predicate places. [2022-10-17 10:28:51,262 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 125 transitions, 400 flow [2022-10-17 10:28:51,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 112.55555555555556) internal successors, (1013), 9 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:51,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:28:51,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:51,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:28:51,263 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:28:51,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:51,265 INFO L85 PathProgramCache]: Analyzing trace with hash 623009225, now seen corresponding path program 1 times [2022-10-17 10:28:51,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:51,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347860210] [2022-10-17 10:28:51,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:51,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:52,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:28:52,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:52,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347860210] [2022-10-17 10:28:52,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347860210] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:52,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:52,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:28:52,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806951488] [2022-10-17 10:28:52,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:52,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:28:52,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:52,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:28:52,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:28:52,152 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 135 [2022-10-17 10:28:52,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 125 transitions, 400 flow. Second operand has 10 states, 10 states have (on average 111.6) internal successors, (1116), 10 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:52,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:28:52,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 135 [2022-10-17 10:28:52,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:28:53,124 INFO L130 PetriNetUnfolder]: 903/1925 cut-off events. [2022-10-17 10:28:53,125 INFO L131 PetriNetUnfolder]: For 7473/7575 co-relation queries the response was YES. [2022-10-17 10:28:53,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6898 conditions, 1925 events. 903/1925 cut-off events. For 7473/7575 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 12399 event pairs, 218 based on Foata normal form. 35/1852 useless extension candidates. Maximal degree in co-relation 6815. Up to 709 conditions per place. [2022-10-17 10:28:53,161 INFO L137 encePairwiseOnDemand]: 124/135 looper letters, 38 selfloop transitions, 10 changer transitions 37/182 dead transitions. [2022-10-17 10:28:53,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 182 transitions, 938 flow [2022-10-17 10:28:53,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 10:28:53,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-10-17 10:28:53,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1730 transitions. [2022-10-17 10:28:53,167 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.854320987654321 [2022-10-17 10:28:53,168 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1730 transitions. [2022-10-17 10:28:53,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1730 transitions. [2022-10-17 10:28:53,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:28:53,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1730 transitions. [2022-10-17 10:28:53,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 115.33333333333333) internal successors, (1730), 15 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:53,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 135.0) internal successors, (2160), 16 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:53,181 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 135.0) internal successors, (2160), 16 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:53,181 INFO L175 Difference]: Start difference. First operand has 157 places, 125 transitions, 400 flow. Second operand 15 states and 1730 transitions. [2022-10-17 10:28:53,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 182 transitions, 938 flow [2022-10-17 10:28:53,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 182 transitions, 906 flow, removed 15 selfloop flow, removed 4 redundant places. [2022-10-17 10:28:53,194 INFO L231 Difference]: Finished difference. Result has 169 places, 129 transitions, 482 flow [2022-10-17 10:28:53,195 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=482, PETRI_PLACES=169, PETRI_TRANSITIONS=129} [2022-10-17 10:28:53,196 INFO L287 CegarLoopForPetriNet]: 142 programPoint places, 27 predicate places. [2022-10-17 10:28:53,196 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 129 transitions, 482 flow [2022-10-17 10:28:53,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 111.6) internal successors, (1116), 10 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:53,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:28:53,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:53,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:28:53,198 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:28:53,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:53,198 INFO L85 PathProgramCache]: Analyzing trace with hash -780525375, now seen corresponding path program 1 times [2022-10-17 10:28:53,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:53,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747663931] [2022-10-17 10:28:53,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:53,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:54,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:28:54,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:54,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747663931] [2022-10-17 10:28:54,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747663931] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:54,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:54,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-10-17 10:28:54,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633697663] [2022-10-17 10:28:54,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:54,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 10:28:54,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:54,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 10:28:54,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:28:54,314 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 135 [2022-10-17 10:28:54,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 129 transitions, 482 flow. Second operand has 12 states, 12 states have (on average 110.5) internal successors, (1326), 12 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:54,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:28:54,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 135 [2022-10-17 10:28:54,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:28:55,339 INFO L130 PetriNetUnfolder]: 768/1714 cut-off events. [2022-10-17 10:28:55,340 INFO L131 PetriNetUnfolder]: For 12107/12238 co-relation queries the response was YES. [2022-10-17 10:28:55,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7917 conditions, 1714 events. 768/1714 cut-off events. For 12107/12238 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10778 event pairs, 198 based on Foata normal form. 28/1641 useless extension candidates. Maximal degree in co-relation 7822. Up to 689 conditions per place. [2022-10-17 10:28:55,379 INFO L137 encePairwiseOnDemand]: 125/135 looper letters, 40 selfloop transitions, 10 changer transitions 25/171 dead transitions. [2022-10-17 10:28:55,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 171 transitions, 1084 flow [2022-10-17 10:28:55,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:28:55,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:28:55,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1484 transitions. [2022-10-17 10:28:55,385 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8455840455840455 [2022-10-17 10:28:55,385 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1484 transitions. [2022-10-17 10:28:55,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1484 transitions. [2022-10-17 10:28:55,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:28:55,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1484 transitions. [2022-10-17 10:28:55,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 114.15384615384616) internal successors, (1484), 13 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:55,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:55,396 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:55,396 INFO L175 Difference]: Start difference. First operand has 169 places, 129 transitions, 482 flow. Second operand 13 states and 1484 transitions. [2022-10-17 10:28:55,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 171 transitions, 1084 flow [2022-10-17 10:28:55,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 171 transitions, 1016 flow, removed 28 selfloop flow, removed 9 redundant places. [2022-10-17 10:28:55,417 INFO L231 Difference]: Finished difference. Result has 170 places, 130 transitions, 508 flow [2022-10-17 10:28:55,418 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=508, PETRI_PLACES=170, PETRI_TRANSITIONS=130} [2022-10-17 10:28:55,418 INFO L287 CegarLoopForPetriNet]: 142 programPoint places, 28 predicate places. [2022-10-17 10:28:55,418 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 130 transitions, 508 flow [2022-10-17 10:28:55,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 110.5) internal successors, (1326), 12 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:55,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:28:55,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:55,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:28:55,420 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:28:55,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:55,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1077850938, now seen corresponding path program 1 times [2022-10-17 10:28:55,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:55,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008011183] [2022-10-17 10:28:55,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:55,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:56,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:28:56,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:56,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008011183] [2022-10-17 10:28:56,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008011183] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:56,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:56,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:28:56,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472232610] [2022-10-17 10:28:56,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:56,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:28:56,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:56,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:28:56,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:28:56,262 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 135 [2022-10-17 10:28:56,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 130 transitions, 508 flow. Second operand has 9 states, 9 states have (on average 111.77777777777777) internal successors, (1006), 9 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:56,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:28:56,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 135 [2022-10-17 10:28:56,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:28:57,140 INFO L130 PetriNetUnfolder]: 851/1837 cut-off events. [2022-10-17 10:28:57,140 INFO L131 PetriNetUnfolder]: For 14488/14684 co-relation queries the response was YES. [2022-10-17 10:28:57,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8675 conditions, 1837 events. 851/1837 cut-off events. For 14488/14684 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12176 event pairs, 181 based on Foata normal form. 71/1807 useless extension candidates. Maximal degree in co-relation 8578. Up to 625 conditions per place. [2022-10-17 10:28:57,176 INFO L137 encePairwiseOnDemand]: 123/135 looper letters, 26 selfloop transitions, 14 changer transitions 48/185 dead transitions. [2022-10-17 10:28:57,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 185 transitions, 1241 flow [2022-10-17 10:28:57,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-17 10:28:57,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-10-17 10:28:57,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1835 transitions. [2022-10-17 10:28:57,183 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8495370370370371 [2022-10-17 10:28:57,183 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1835 transitions. [2022-10-17 10:28:57,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1835 transitions. [2022-10-17 10:28:57,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:28:57,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1835 transitions. [2022-10-17 10:28:57,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 114.6875) internal successors, (1835), 16 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:57,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 135.0) internal successors, (2295), 17 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:57,196 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 135.0) internal successors, (2295), 17 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:57,196 INFO L175 Difference]: Start difference. First operand has 170 places, 130 transitions, 508 flow. Second operand 16 states and 1835 transitions. [2022-10-17 10:28:57,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 185 transitions, 1241 flow [2022-10-17 10:28:57,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 185 transitions, 1153 flow, removed 34 selfloop flow, removed 10 redundant places. [2022-10-17 10:28:57,224 INFO L231 Difference]: Finished difference. Result has 180 places, 132 transitions, 581 flow [2022-10-17 10:28:57,224 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=581, PETRI_PLACES=180, PETRI_TRANSITIONS=132} [2022-10-17 10:28:57,226 INFO L287 CegarLoopForPetriNet]: 142 programPoint places, 38 predicate places. [2022-10-17 10:28:57,226 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 132 transitions, 581 flow [2022-10-17 10:28:57,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 111.77777777777777) internal successors, (1006), 9 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:57,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:28:57,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:57,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:28:57,230 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:28:57,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:57,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1061301541, now seen corresponding path program 1 times [2022-10-17 10:28:57,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:57,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7528855] [2022-10-17 10:28:57,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:57,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:57,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:28:57,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:57,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7528855] [2022-10-17 10:28:57,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7528855] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:57,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:57,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:28:57,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270010631] [2022-10-17 10:28:57,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:57,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:28:57,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:57,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:28:57,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:28:57,960 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 135 [2022-10-17 10:28:57,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 132 transitions, 581 flow. Second operand has 10 states, 10 states have (on average 110.8) internal successors, (1108), 10 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:57,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:28:57,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 135 [2022-10-17 10:28:57,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:28:58,721 INFO L130 PetriNetUnfolder]: 683/1635 cut-off events. [2022-10-17 10:28:58,722 INFO L131 PetriNetUnfolder]: For 18478/18602 co-relation queries the response was YES. [2022-10-17 10:28:58,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8734 conditions, 1635 events. 683/1635 cut-off events. For 18478/18602 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10392 event pairs, 152 based on Foata normal form. 30/1582 useless extension candidates. Maximal degree in co-relation 8630. Up to 604 conditions per place. [2022-10-17 10:28:58,762 INFO L137 encePairwiseOnDemand]: 122/135 looper letters, 34 selfloop transitions, 17 changer transitions 13/160 dead transitions. [2022-10-17 10:28:58,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 160 transitions, 1039 flow [2022-10-17 10:28:58,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:28:58,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:28:58,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1141 transitions. [2022-10-17 10:28:58,767 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8451851851851852 [2022-10-17 10:28:58,767 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1141 transitions. [2022-10-17 10:28:58,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1141 transitions. [2022-10-17 10:28:58,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:28:58,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1141 transitions. [2022-10-17 10:28:58,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 114.1) internal successors, (1141), 10 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:58,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 135.0) internal successors, (1485), 11 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:58,776 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 135.0) internal successors, (1485), 11 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:58,777 INFO L175 Difference]: Start difference. First operand has 180 places, 132 transitions, 581 flow. Second operand 10 states and 1141 transitions. [2022-10-17 10:28:58,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 160 transitions, 1039 flow [2022-10-17 10:28:58,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 160 transitions, 957 flow, removed 31 selfloop flow, removed 14 redundant places. [2022-10-17 10:28:58,805 INFO L231 Difference]: Finished difference. Result has 171 places, 140 transitions, 656 flow [2022-10-17 10:28:58,806 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=656, PETRI_PLACES=171, PETRI_TRANSITIONS=140} [2022-10-17 10:28:58,806 INFO L287 CegarLoopForPetriNet]: 142 programPoint places, 29 predicate places. [2022-10-17 10:28:58,806 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 140 transitions, 656 flow [2022-10-17 10:28:58,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 110.8) internal successors, (1108), 10 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:58,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:28:58,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:58,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:28:58,808 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:28:58,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:58,809 INFO L85 PathProgramCache]: Analyzing trace with hash 600617691, now seen corresponding path program 2 times [2022-10-17 10:28:58,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:58,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508691994] [2022-10-17 10:28:58,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:58,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:59,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:28:59,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:59,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508691994] [2022-10-17 10:28:59,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508691994] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:59,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:59,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:28:59,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562696543] [2022-10-17 10:28:59,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:59,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:28:59,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:59,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:28:59,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:28:59,587 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 135 [2022-10-17 10:28:59,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 140 transitions, 656 flow. Second operand has 10 states, 10 states have (on average 110.8) internal successors, (1108), 10 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:59,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:28:59,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 135 [2022-10-17 10:28:59,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:29:00,401 INFO L130 PetriNetUnfolder]: 712/1675 cut-off events. [2022-10-17 10:29:00,401 INFO L131 PetriNetUnfolder]: For 19698/20087 co-relation queries the response was YES. [2022-10-17 10:29:00,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9346 conditions, 1675 events. 712/1675 cut-off events. For 19698/20087 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10778 event pairs, 104 based on Foata normal form. 53/1637 useless extension candidates. Maximal degree in co-relation 9247. Up to 613 conditions per place. [2022-10-17 10:29:00,436 INFO L137 encePairwiseOnDemand]: 123/135 looper letters, 36 selfloop transitions, 18 changer transitions 25/175 dead transitions. [2022-10-17 10:29:00,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 175 transitions, 1332 flow [2022-10-17 10:29:00,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 10:29:00,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-10-17 10:29:00,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1372 transitions. [2022-10-17 10:29:00,442 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8469135802469135 [2022-10-17 10:29:00,442 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1372 transitions. [2022-10-17 10:29:00,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1372 transitions. [2022-10-17 10:29:00,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:29:00,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1372 transitions. [2022-10-17 10:29:00,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 114.33333333333333) internal successors, (1372), 12 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:00,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 135.0) internal successors, (1755), 13 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:00,452 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 135.0) internal successors, (1755), 13 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:00,452 INFO L175 Difference]: Start difference. First operand has 171 places, 140 transitions, 656 flow. Second operand 12 states and 1372 transitions. [2022-10-17 10:29:00,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 175 transitions, 1332 flow [2022-10-17 10:29:00,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 175 transitions, 1197 flow, removed 61 selfloop flow, removed 9 redundant places. [2022-10-17 10:29:00,488 INFO L231 Difference]: Finished difference. Result has 177 places, 143 transitions, 708 flow [2022-10-17 10:29:00,489 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=708, PETRI_PLACES=177, PETRI_TRANSITIONS=143} [2022-10-17 10:29:00,489 INFO L287 CegarLoopForPetriNet]: 142 programPoint places, 35 predicate places. [2022-10-17 10:29:00,490 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 143 transitions, 708 flow [2022-10-17 10:29:00,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 110.8) internal successors, (1108), 10 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:00,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:29:00,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:29:00,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 10:29:00,491 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:29:00,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:00,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1401362573, now seen corresponding path program 3 times [2022-10-17 10:29:00,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:29:00,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898198294] [2022-10-17 10:29:00,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:00,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:29:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:01,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:29:01,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:29:01,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898198294] [2022-10-17 10:29:01,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898198294] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:01,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:01,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 10:29:01,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555269147] [2022-10-17 10:29:01,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:01,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 10:29:01,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:29:01,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 10:29:01,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:29:01,352 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 135 [2022-10-17 10:29:01,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 143 transitions, 708 flow. Second operand has 11 states, 11 states have (on average 111.54545454545455) internal successors, (1227), 11 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:01,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:29:01,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 135 [2022-10-17 10:29:01,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:29:02,288 INFO L130 PetriNetUnfolder]: 805/1764 cut-off events. [2022-10-17 10:29:02,288 INFO L131 PetriNetUnfolder]: For 32843/33361 co-relation queries the response was YES. [2022-10-17 10:29:02,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11926 conditions, 1764 events. 805/1764 cut-off events. For 32843/33361 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11066 event pairs, 64 based on Foata normal form. 76/1750 useless extension candidates. Maximal degree in co-relation 11827. Up to 628 conditions per place. [2022-10-17 10:29:02,327 INFO L137 encePairwiseOnDemand]: 123/135 looper letters, 39 selfloop transitions, 19 changer transitions 25/180 dead transitions. [2022-10-17 10:29:02,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 180 transitions, 1552 flow [2022-10-17 10:29:02,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:29:02,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:29:02,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1492 transitions. [2022-10-17 10:29:02,330 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8501424501424502 [2022-10-17 10:29:02,330 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1492 transitions. [2022-10-17 10:29:02,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1492 transitions. [2022-10-17 10:29:02,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:29:02,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1492 transitions. [2022-10-17 10:29:02,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 114.76923076923077) internal successors, (1492), 13 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:02,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:02,340 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:02,340 INFO L175 Difference]: Start difference. First operand has 177 places, 143 transitions, 708 flow. Second operand 13 states and 1492 transitions. [2022-10-17 10:29:02,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 180 transitions, 1552 flow [2022-10-17 10:29:02,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 180 transitions, 1473 flow, removed 25 selfloop flow, removed 7 redundant places. [2022-10-17 10:29:02,379 INFO L231 Difference]: Finished difference. Result has 183 places, 146 transitions, 797 flow [2022-10-17 10:29:02,380 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=797, PETRI_PLACES=183, PETRI_TRANSITIONS=146} [2022-10-17 10:29:02,380 INFO L287 CegarLoopForPetriNet]: 142 programPoint places, 41 predicate places. [2022-10-17 10:29:02,381 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 146 transitions, 797 flow [2022-10-17 10:29:02,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 111.54545454545455) internal successors, (1227), 11 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:02,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:29:02,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:29:02,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 10:29:02,382 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:29:02,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:02,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1682452899, now seen corresponding path program 4 times [2022-10-17 10:29:02,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:29:02,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178524647] [2022-10-17 10:29:02,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:02,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:29:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:03,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:29:03,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:29:03,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178524647] [2022-10-17 10:29:03,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178524647] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:03,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:03,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:29:03,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999836554] [2022-10-17 10:29:03,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:03,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:29:03,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:29:03,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:29:03,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:29:03,098 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 135 [2022-10-17 10:29:03,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 146 transitions, 797 flow. Second operand has 9 states, 9 states have (on average 111.88888888888889) internal successors, (1007), 9 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:03,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:29:03,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 135 [2022-10-17 10:29:03,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:29:04,058 INFO L130 PetriNetUnfolder]: 785/1752 cut-off events. [2022-10-17 10:29:04,058 INFO L131 PetriNetUnfolder]: For 54009/55000 co-relation queries the response was YES. [2022-10-17 10:29:04,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14111 conditions, 1752 events. 785/1752 cut-off events. For 54009/55000 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 11520 event pairs, 50 based on Foata normal form. 97/1775 useless extension candidates. Maximal degree in co-relation 14007. Up to 644 conditions per place. [2022-10-17 10:29:04,104 INFO L137 encePairwiseOnDemand]: 123/135 looper letters, 40 selfloop transitions, 25 changer transitions 25/187 dead transitions. [2022-10-17 10:29:04,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 187 transitions, 1899 flow [2022-10-17 10:29:04,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:29:04,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-10-17 10:29:04,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1606 transitions. [2022-10-17 10:29:04,108 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8497354497354498 [2022-10-17 10:29:04,108 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1606 transitions. [2022-10-17 10:29:04,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1606 transitions. [2022-10-17 10:29:04,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:29:04,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1606 transitions. [2022-10-17 10:29:04,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 114.71428571428571) internal successors, (1606), 14 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:04,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 135.0) internal successors, (2025), 15 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:04,116 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 135.0) internal successors, (2025), 15 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:04,116 INFO L175 Difference]: Start difference. First operand has 183 places, 146 transitions, 797 flow. Second operand 14 states and 1606 transitions. [2022-10-17 10:29:04,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 187 transitions, 1899 flow [2022-10-17 10:29:04,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 187 transitions, 1441 flow, removed 216 selfloop flow, removed 14 redundant places. [2022-10-17 10:29:04,197 INFO L231 Difference]: Finished difference. Result has 183 places, 149 transitions, 829 flow [2022-10-17 10:29:04,197 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=829, PETRI_PLACES=183, PETRI_TRANSITIONS=149} [2022-10-17 10:29:04,198 INFO L287 CegarLoopForPetriNet]: 142 programPoint places, 41 predicate places. [2022-10-17 10:29:04,198 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 149 transitions, 829 flow [2022-10-17 10:29:04,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 111.88888888888889) internal successors, (1007), 9 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:04,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:29:04,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:29:04,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-17 10:29:04,199 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:29:04,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:04,200 INFO L85 PathProgramCache]: Analyzing trace with hash -642079145, now seen corresponding path program 1 times [2022-10-17 10:29:04,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:29:04,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114900589] [2022-10-17 10:29:04,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:04,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:29:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:05,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:29:05,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:29:05,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114900589] [2022-10-17 10:29:05,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114900589] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:05,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:05,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:29:05,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943422480] [2022-10-17 10:29:05,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:05,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:29:05,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:29:05,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:29:05,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:29:05,014 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 135 [2022-10-17 10:29:05,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 149 transitions, 829 flow. Second operand has 10 states, 10 states have (on average 110.9) internal successors, (1109), 10 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:05,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:29:05,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 135 [2022-10-17 10:29:05,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:29:05,820 INFO L130 PetriNetUnfolder]: 666/1643 cut-off events. [2022-10-17 10:29:05,821 INFO L131 PetriNetUnfolder]: For 33072/34075 co-relation queries the response was YES. [2022-10-17 10:29:05,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10916 conditions, 1643 events. 666/1643 cut-off events. For 33072/34075 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 10802 event pairs, 79 based on Foata normal form. 116/1662 useless extension candidates. Maximal degree in co-relation 10813. Up to 684 conditions per place. [2022-10-17 10:29:05,862 INFO L137 encePairwiseOnDemand]: 123/135 looper letters, 46 selfloop transitions, 21 changer transitions 19/182 dead transitions. [2022-10-17 10:29:05,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 182 transitions, 1662 flow [2022-10-17 10:29:05,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 10:29:05,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-10-17 10:29:05,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1366 transitions. [2022-10-17 10:29:05,866 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8432098765432099 [2022-10-17 10:29:05,866 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1366 transitions. [2022-10-17 10:29:05,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1366 transitions. [2022-10-17 10:29:05,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:29:05,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1366 transitions. [2022-10-17 10:29:05,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 113.83333333333333) internal successors, (1366), 12 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:05,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 135.0) internal successors, (1755), 13 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:05,877 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 135.0) internal successors, (1755), 13 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:05,877 INFO L175 Difference]: Start difference. First operand has 183 places, 149 transitions, 829 flow. Second operand 12 states and 1366 transitions. [2022-10-17 10:29:05,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 182 transitions, 1662 flow [2022-10-17 10:29:05,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 182 transitions, 1435 flow, removed 101 selfloop flow, removed 12 redundant places. [2022-10-17 10:29:05,927 INFO L231 Difference]: Finished difference. Result has 184 places, 155 transitions, 967 flow [2022-10-17 10:29:05,927 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=967, PETRI_PLACES=184, PETRI_TRANSITIONS=155} [2022-10-17 10:29:05,928 INFO L287 CegarLoopForPetriNet]: 142 programPoint places, 42 predicate places. [2022-10-17 10:29:05,928 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 155 transitions, 967 flow [2022-10-17 10:29:05,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 110.9) internal successors, (1109), 10 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:05,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:29:05,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:29:05,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-17 10:29:05,930 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:29:05,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:05,930 INFO L85 PathProgramCache]: Analyzing trace with hash 694488253, now seen corresponding path program 2 times [2022-10-17 10:29:05,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:29:05,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185734184] [2022-10-17 10:29:05,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:05,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:29:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:07,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:29:07,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:29:07,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185734184] [2022-10-17 10:29:07,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185734184] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:07,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:07,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-10-17 10:29:07,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908305581] [2022-10-17 10:29:07,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:07,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-17 10:29:07,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:29:07,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-17 10:29:07,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:29:07,051 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 135 [2022-10-17 10:29:07,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 155 transitions, 967 flow. Second operand has 13 states, 13 states have (on average 108.61538461538461) internal successors, (1412), 13 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:07,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:29:07,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 135 [2022-10-17 10:29:07,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand