./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix053_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0464d5a-d3bd-47e9-95bf-2ed6843f969a/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0464d5a-d3bd-47e9-95bf-2ed6843f969a/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0464d5a-d3bd-47e9-95bf-2ed6843f969a/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0464d5a-d3bd-47e9-95bf-2ed6843f969a/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix053_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0464d5a-d3bd-47e9-95bf-2ed6843f969a/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0464d5a-d3bd-47e9-95bf-2ed6843f969a/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9a8131f8693d82039b4018f716a17d0a3e1038ace11c7bb21b12bc911efac3c1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:39:44,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:39:44,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:39:44,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:39:44,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:39:44,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:39:44,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:39:44,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:39:44,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:39:44,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:39:44,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:39:44,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:39:44,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:39:44,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:39:44,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:39:44,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:39:44,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:39:44,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:39:44,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:39:44,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:39:44,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:39:44,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:39:44,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:39:44,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:39:44,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:39:44,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:39:44,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:39:44,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:39:44,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:39:44,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:39:44,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:39:44,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:39:44,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:39:44,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:39:44,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:39:44,255 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:39:44,256 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:39:44,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:39:44,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:39:44,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:39:44,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:39:44,260 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0464d5a-d3bd-47e9-95bf-2ed6843f969a/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:39:44,312 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:39:44,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:39:44,313 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:39:44,314 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:39:44,315 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:39:44,316 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:39:44,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:39:44,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:39:44,317 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:39:44,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:39:44,319 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:39:44,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:39:44,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:39:44,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:39:44,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:39:44,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:39:44,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:39:44,321 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:39:44,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:39:44,321 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:39:44,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:39:44,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:39:44,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:39:44,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:39:44,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:39:44,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:39:44,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:39:44,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:39:44,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:39:44,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:39:44,325 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:39:44,326 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:39:44,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:39:44,326 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_b0464d5a-d3bd-47e9-95bf-2ed6843f969a/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0464d5a-d3bd-47e9-95bf-2ed6843f969a/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a8131f8693d82039b4018f716a17d0a3e1038ace11c7bb21b12bc911efac3c1 [2022-11-18 20:39:44,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:39:44,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:39:44,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:39:44,699 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:39:44,700 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:39:44,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0464d5a-d3bd-47e9-95bf-2ed6843f969a/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-wmm/mix053_tso.oepc.i [2022-11-18 20:39:44,792 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0464d5a-d3bd-47e9-95bf-2ed6843f969a/bin/uautomizer-TMbwUNV5ro/data/7472d75dc/1ee2b95e3d9b451a8dcd866fd9bccae0/FLAG26ebb2ab7 [2022-11-18 20:39:45,350 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:39:45,350 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0464d5a-d3bd-47e9-95bf-2ed6843f969a/sv-benchmarks/c/pthread-wmm/mix053_tso.oepc.i [2022-11-18 20:39:45,371 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0464d5a-d3bd-47e9-95bf-2ed6843f969a/bin/uautomizer-TMbwUNV5ro/data/7472d75dc/1ee2b95e3d9b451a8dcd866fd9bccae0/FLAG26ebb2ab7 [2022-11-18 20:39:45,641 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0464d5a-d3bd-47e9-95bf-2ed6843f969a/bin/uautomizer-TMbwUNV5ro/data/7472d75dc/1ee2b95e3d9b451a8dcd866fd9bccae0 [2022-11-18 20:39:45,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:39:45,646 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:39:45,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:39:45,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:39:45,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:39:45,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:39:45" (1/1) ... [2022-11-18 20:39:45,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54858014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:45, skipping insertion in model container [2022-11-18 20:39:45,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:39:45" (1/1) ... [2022-11-18 20:39:45,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:39:45,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:39:45,964 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0464d5a-d3bd-47e9-95bf-2ed6843f969a/sv-benchmarks/c/pthread-wmm/mix053_tso.oepc.i[949,962] [2022-11-18 20:39:46,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:39:46,311 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:39:46,327 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0464d5a-d3bd-47e9-95bf-2ed6843f969a/sv-benchmarks/c/pthread-wmm/mix053_tso.oepc.i[949,962] [2022-11-18 20:39:46,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:39:46,428 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:39:46,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:46 WrapperNode [2022-11-18 20:39:46,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:39:46,430 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:39:46,430 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:39:46,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:39:46,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:46" (1/1) ... [2022-11-18 20:39:46,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:46" (1/1) ... [2022-11-18 20:39:46,490 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 158 [2022-11-18 20:39:46,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:39:46,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:39:46,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:39:46,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:39:46,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:46" (1/1) ... [2022-11-18 20:39:46,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:46" (1/1) ... [2022-11-18 20:39:46,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:46" (1/1) ... [2022-11-18 20:39:46,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:46" (1/1) ... [2022-11-18 20:39:46,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:46" (1/1) ... [2022-11-18 20:39:46,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:46" (1/1) ... [2022-11-18 20:39:46,531 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:46" (1/1) ... [2022-11-18 20:39:46,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:46" (1/1) ... [2022-11-18 20:39:46,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:39:46,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:39:46,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:39:46,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:39:46,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:46" (1/1) ... [2022-11-18 20:39:46,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:39:46,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0464d5a-d3bd-47e9-95bf-2ed6843f969a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:46,578 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0464d5a-d3bd-47e9-95bf-2ed6843f969a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:39:46,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0464d5a-d3bd-47e9-95bf-2ed6843f969a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:39:46,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:39:46,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:39:46,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:39:46,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:39:46,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:39:46,659 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-18 20:39:46,659 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-18 20:39:46,661 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-18 20:39:46,663 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-18 20:39:46,663 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-18 20:39:46,663 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-18 20:39:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-18 20:39:46,664 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-18 20:39:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:39:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:39:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:39:46,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:39:46,666 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:39:46,856 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:39:46,858 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:39:47,329 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:39:47,742 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:39:47,743 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:39:47,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:39:47 BoogieIcfgContainer [2022-11-18 20:39:47,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:39:47,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:39:47,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:39:47,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:39:47,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:39:45" (1/3) ... [2022-11-18 20:39:47,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c9b9e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:39:47, skipping insertion in model container [2022-11-18 20:39:47,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:46" (2/3) ... [2022-11-18 20:39:47,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c9b9e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:39:47, skipping insertion in model container [2022-11-18 20:39:47,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:39:47" (3/3) ... [2022-11-18 20:39:47,760 INFO L112 eAbstractionObserver]: Analyzing ICFG mix053_tso.oepc.i [2022-11-18 20:39:47,770 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:39:47,785 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:39:47,785 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 20:39:47,785 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:39:47,862 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 20:39:47,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 134 transitions, 288 flow [2022-11-18 20:39:48,046 INFO L130 PetriNetUnfolder]: 2/130 cut-off events. [2022-11-18 20:39:48,047 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:39:48,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 130 events. 2/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2022-11-18 20:39:48,054 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 134 transitions, 288 flow [2022-11-18 20:39:48,065 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 130 transitions, 272 flow [2022-11-18 20:39:48,092 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:39:48,105 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;@20f8bf09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:39:48,105 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-18 20:39:48,143 INFO L130 PetriNetUnfolder]: 0/76 cut-off events. [2022-11-18 20:39:48,144 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:39:48,144 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:48,145 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:48,146 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 20:39:48,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:48,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1995111346, now seen corresponding path program 1 times [2022-11-18 20:39:48,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:48,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813653706] [2022-11-18 20:39:48,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:48,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:49,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:49,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:49,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813653706] [2022-11-18 20:39:49,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813653706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:49,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:49,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:39:49,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916734415] [2022-11-18 20:39:49,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:49,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:39:49,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:49,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:39:49,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:39:49,089 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 134 [2022-11-18 20:39:49,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 130 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:49,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:49,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 134 [2022-11-18 20:39:49,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:39:49,409 INFO L130 PetriNetUnfolder]: 57/522 cut-off events. [2022-11-18 20:39:49,409 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-18 20:39:49,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 522 events. 57/522 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2642 event pairs, 31 based on Foata normal form. 15/507 useless extension candidates. Maximal degree in co-relation 595. Up to 75 conditions per place. [2022-11-18 20:39:49,426 INFO L137 encePairwiseOnDemand]: 129/134 looper letters, 14 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2022-11-18 20:39:49,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 131 transitions, 309 flow [2022-11-18 20:39:49,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:39:49,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:39:49,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 378 transitions. [2022-11-18 20:39:49,454 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9402985074626866 [2022-11-18 20:39:49,455 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 378 transitions. [2022-11-18 20:39:49,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 378 transitions. [2022-11-18 20:39:49,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:39:49,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 378 transitions. [2022-11-18 20:39:49,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:49,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:49,486 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:49,489 INFO L175 Difference]: Start difference. First operand has 141 places, 130 transitions, 272 flow. Second operand 3 states and 378 transitions. [2022-11-18 20:39:49,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 131 transitions, 309 flow [2022-11-18 20:39:49,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 131 transitions, 304 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:39:49,500 INFO L231 Difference]: Finished difference. Result has 137 places, 126 transitions, 264 flow [2022-11-18 20:39:49,503 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=137, PETRI_TRANSITIONS=126} [2022-11-18 20:39:49,510 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, -4 predicate places. [2022-11-18 20:39:49,511 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 126 transitions, 264 flow [2022-11-18 20:39:49,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:49,512 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:49,512 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:49,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:39:49,513 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)] === [2022-11-18 20:39:49,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:49,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1097612185, now seen corresponding path program 1 times [2022-11-18 20:39:49,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:49,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799741046] [2022-11-18 20:39:49,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:49,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:51,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:51,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:51,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799741046] [2022-11-18 20:39:51,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799741046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:51,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:51,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:39:51,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840298477] [2022-11-18 20:39:51,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:51,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:39:51,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:51,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:39:51,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:39:51,110 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 134 [2022-11-18 20:39:51,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 126 transitions, 264 flow. Second operand has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:51,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:51,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 134 [2022-11-18 20:39:51,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:39:54,306 INFO L130 PetriNetUnfolder]: 4079/10433 cut-off events. [2022-11-18 20:39:54,307 INFO L131 PetriNetUnfolder]: For 438/438 co-relation queries the response was YES. [2022-11-18 20:39:54,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16868 conditions, 10433 events. 4079/10433 cut-off events. For 438/438 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 102641 event pairs, 314 based on Foata normal form. 0/10209 useless extension candidates. Maximal degree in co-relation 16804. Up to 2762 conditions per place. [2022-11-18 20:39:54,389 INFO L137 encePairwiseOnDemand]: 120/134 looper letters, 44 selfloop transitions, 12 changer transitions 101/239 dead transitions. [2022-11-18 20:39:54,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 239 transitions, 810 flow [2022-11-18 20:39:54,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:39:54,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:39:54,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1434 transitions. [2022-11-18 20:39:54,396 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8231917336394948 [2022-11-18 20:39:54,396 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1434 transitions. [2022-11-18 20:39:54,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1434 transitions. [2022-11-18 20:39:54,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:39:54,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1434 transitions. [2022-11-18 20:39:54,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 110.3076923076923) internal successors, (1434), 13 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:54,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:54,410 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:54,410 INFO L175 Difference]: Start difference. First operand has 137 places, 126 transitions, 264 flow. Second operand 13 states and 1434 transitions. [2022-11-18 20:39:54,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 239 transitions, 810 flow [2022-11-18 20:39:54,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 239 transitions, 784 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:39:54,419 INFO L231 Difference]: Finished difference. Result has 158 places, 122 transitions, 363 flow [2022-11-18 20:39:54,420 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=363, PETRI_PLACES=158, PETRI_TRANSITIONS=122} [2022-11-18 20:39:54,420 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 17 predicate places. [2022-11-18 20:39:54,421 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 122 transitions, 363 flow [2022-11-18 20:39:54,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:54,422 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:54,422 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:54,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:39:54,423 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)] === [2022-11-18 20:39:54,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:54,424 INFO L85 PathProgramCache]: Analyzing trace with hash 951473798, now seen corresponding path program 1 times [2022-11-18 20:39:54,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:54,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718727551] [2022-11-18 20:39:54,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:54,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:56,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:56,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:56,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718727551] [2022-11-18 20:39:56,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718727551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:56,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:56,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:39:56,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918072642] [2022-11-18 20:39:56,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:56,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:39:56,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:56,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:39:56,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:39:56,485 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 134 [2022-11-18 20:39:56,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 122 transitions, 363 flow. Second operand has 10 states, 10 states have (on average 101.2) internal successors, (1012), 10 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:56,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:56,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 134 [2022-11-18 20:39:56,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:00,034 INFO L130 PetriNetUnfolder]: 3358/6821 cut-off events. [2022-11-18 20:40:00,034 INFO L131 PetriNetUnfolder]: For 15571/18208 co-relation queries the response was YES. [2022-11-18 20:40:00,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24105 conditions, 6821 events. 3358/6821 cut-off events. For 15571/18208 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 54159 event pairs, 580 based on Foata normal form. 174/6822 useless extension candidates. Maximal degree in co-relation 24030. Up to 2922 conditions per place. [2022-11-18 20:40:00,136 INFO L137 encePairwiseOnDemand]: 117/134 looper letters, 65 selfloop transitions, 27 changer transitions 144/318 dead transitions. [2022-11-18 20:40:00,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 318 transitions, 2172 flow [2022-11-18 20:40:00,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:40:00,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 20:40:00,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2363 transitions. [2022-11-18 20:40:00,145 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8015603799185889 [2022-11-18 20:40:00,145 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2363 transitions. [2022-11-18 20:40:00,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2363 transitions. [2022-11-18 20:40:00,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:00,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2363 transitions. [2022-11-18 20:40:00,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 107.4090909090909) internal successors, (2363), 22 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:00,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 134.0) internal successors, (3082), 23 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:00,165 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 134.0) internal successors, (3082), 23 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:00,166 INFO L175 Difference]: Start difference. First operand has 158 places, 122 transitions, 363 flow. Second operand 22 states and 2363 transitions. [2022-11-18 20:40:00,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 318 transitions, 2172 flow [2022-11-18 20:40:00,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 318 transitions, 2084 flow, removed 44 selfloop flow, removed 6 redundant places. [2022-11-18 20:40:00,347 INFO L231 Difference]: Finished difference. Result has 170 places, 141 transitions, 728 flow [2022-11-18 20:40:00,347 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=728, PETRI_PLACES=170, PETRI_TRANSITIONS=141} [2022-11-18 20:40:00,350 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 29 predicate places. [2022-11-18 20:40:00,351 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 141 transitions, 728 flow [2022-11-18 20:40:00,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.2) internal successors, (1012), 10 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:00,352 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:00,352 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:00,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:40:00,353 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)] === [2022-11-18 20:40:00,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:00,354 INFO L85 PathProgramCache]: Analyzing trace with hash -2113826422, now seen corresponding path program 1 times [2022-11-18 20:40:00,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:00,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940129575] [2022-11-18 20:40:00,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:00,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:01,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:01,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:01,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940129575] [2022-11-18 20:40:01,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940129575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:01,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:01,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:40:01,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849995063] [2022-11-18 20:40:01,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:01,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:40:01,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:01,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:40:01,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:40:01,579 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 134 [2022-11-18 20:40:01,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 141 transitions, 728 flow. Second operand has 10 states, 10 states have (on average 109.7) internal successors, (1097), 10 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:01,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:01,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 134 [2022-11-18 20:40:01,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:03,310 INFO L130 PetriNetUnfolder]: 2079/4505 cut-off events. [2022-11-18 20:40:03,310 INFO L131 PetriNetUnfolder]: For 42463/44244 co-relation queries the response was YES. [2022-11-18 20:40:03,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25093 conditions, 4505 events. 2079/4505 cut-off events. For 42463/44244 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 35969 event pairs, 636 based on Foata normal form. 502/4801 useless extension candidates. Maximal degree in co-relation 25001. Up to 2126 conditions per place. [2022-11-18 20:40:03,402 INFO L137 encePairwiseOnDemand]: 122/134 looper letters, 42 selfloop transitions, 22 changer transitions 43/213 dead transitions. [2022-11-18 20:40:03,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 213 transitions, 1766 flow [2022-11-18 20:40:03,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:40:03,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 20:40:03,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1368 transitions. [2022-11-18 20:40:03,408 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8507462686567164 [2022-11-18 20:40:03,410 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1368 transitions. [2022-11-18 20:40:03,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1368 transitions. [2022-11-18 20:40:03,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:03,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1368 transitions. [2022-11-18 20:40:03,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 114.0) internal successors, (1368), 12 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:03,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 134.0) internal successors, (1742), 13 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:03,429 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 134.0) internal successors, (1742), 13 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:03,429 INFO L175 Difference]: Start difference. First operand has 170 places, 141 transitions, 728 flow. Second operand 12 states and 1368 transitions. [2022-11-18 20:40:03,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 213 transitions, 1766 flow [2022-11-18 20:40:03,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 213 transitions, 1693 flow, removed 36 selfloop flow, removed 7 redundant places. [2022-11-18 20:40:03,532 INFO L231 Difference]: Finished difference. Result has 167 places, 155 transitions, 987 flow [2022-11-18 20:40:03,532 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=987, PETRI_PLACES=167, PETRI_TRANSITIONS=155} [2022-11-18 20:40:03,533 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 26 predicate places. [2022-11-18 20:40:03,534 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 155 transitions, 987 flow [2022-11-18 20:40:03,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 109.7) internal successors, (1097), 10 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:03,535 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:03,535 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:03,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:40:03,536 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)] === [2022-11-18 20:40:03,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:03,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1762216228, now seen corresponding path program 2 times [2022-11-18 20:40:03,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:03,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900979537] [2022-11-18 20:40:03,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:03,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:06,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:06,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:06,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900979537] [2022-11-18 20:40:06,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900979537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:06,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:06,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 20:40:06,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283885021] [2022-11-18 20:40:06,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:06,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:40:06,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:06,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:40:06,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:40:06,416 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 134 [2022-11-18 20:40:06,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 155 transitions, 987 flow. Second operand has 13 states, 13 states have (on average 100.76923076923077) internal successors, (1310), 13 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:06,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:06,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 134 [2022-11-18 20:40:06,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:09,174 INFO L130 PetriNetUnfolder]: 2753/5722 cut-off events. [2022-11-18 20:40:09,174 INFO L131 PetriNetUnfolder]: For 68010/78468 co-relation queries the response was YES. [2022-11-18 20:40:09,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36298 conditions, 5722 events. 2753/5722 cut-off events. For 68010/78468 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 45464 event pairs, 218 based on Foata normal form. 117/5730 useless extension candidates. Maximal degree in co-relation 36196. Up to 2511 conditions per place. [2022-11-18 20:40:09,286 INFO L137 encePairwiseOnDemand]: 114/134 looper letters, 84 selfloop transitions, 68 changer transitions 107/341 dead transitions. [2022-11-18 20:40:09,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 341 transitions, 4232 flow [2022-11-18 20:40:09,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 20:40:09,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 20:40:09,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2152 transitions. [2022-11-18 20:40:09,300 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8029850746268656 [2022-11-18 20:40:09,301 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2152 transitions. [2022-11-18 20:40:09,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2152 transitions. [2022-11-18 20:40:09,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:09,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2152 transitions. [2022-11-18 20:40:09,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 107.6) internal successors, (2152), 20 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:09,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 134.0) internal successors, (2814), 21 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:09,319 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 134.0) internal successors, (2814), 21 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:09,320 INFO L175 Difference]: Start difference. First operand has 167 places, 155 transitions, 987 flow. Second operand 20 states and 2152 transitions. [2022-11-18 20:40:09,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 341 transitions, 4232 flow [2022-11-18 20:40:09,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 341 transitions, 4151 flow, removed 31 selfloop flow, removed 8 redundant places. [2022-11-18 20:40:09,456 INFO L231 Difference]: Finished difference. Result has 186 places, 194 transitions, 1928 flow [2022-11-18 20:40:09,457 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1928, PETRI_PLACES=186, PETRI_TRANSITIONS=194} [2022-11-18 20:40:09,460 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 45 predicate places. [2022-11-18 20:40:09,461 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 194 transitions, 1928 flow [2022-11-18 20:40:09,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 100.76923076923077) internal successors, (1310), 13 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:09,462 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:09,462 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:09,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:40:09,463 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)] === [2022-11-18 20:40:09,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:09,464 INFO L85 PathProgramCache]: Analyzing trace with hash 2146539692, now seen corresponding path program 1 times [2022-11-18 20:40:09,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:09,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678125549] [2022-11-18 20:40:09,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:09,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:10,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:10,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:10,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678125549] [2022-11-18 20:40:10,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678125549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:10,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:10,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:40:10,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643950559] [2022-11-18 20:40:10,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:10,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:40:10,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:10,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:40:10,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:40:10,594 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 134 [2022-11-18 20:40:10,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 194 transitions, 1928 flow. Second operand has 9 states, 9 states have (on average 110.88888888888889) internal successors, (998), 9 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:10,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:10,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 134 [2022-11-18 20:40:10,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:12,270 INFO L130 PetriNetUnfolder]: 2217/4640 cut-off events. [2022-11-18 20:40:12,270 INFO L131 PetriNetUnfolder]: For 103260/113041 co-relation queries the response was YES. [2022-11-18 20:40:12,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37187 conditions, 4640 events. 2217/4640 cut-off events. For 103260/113041 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 35919 event pairs, 416 based on Foata normal form. 866/5341 useless extension candidates. Maximal degree in co-relation 37077. Up to 2488 conditions per place. [2022-11-18 20:40:12,372 INFO L137 encePairwiseOnDemand]: 123/134 looper letters, 70 selfloop transitions, 47 changer transitions 43/282 dead transitions. [2022-11-18 20:40:12,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 282 transitions, 3993 flow [2022-11-18 20:40:12,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:40:12,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:40:12,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1263 transitions. [2022-11-18 20:40:12,377 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8568521031207599 [2022-11-18 20:40:12,377 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1263 transitions. [2022-11-18 20:40:12,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1263 transitions. [2022-11-18 20:40:12,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:12,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1263 transitions. [2022-11-18 20:40:12,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 114.81818181818181) internal successors, (1263), 11 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:12,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 134.0) internal successors, (1608), 12 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:12,387 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 134.0) internal successors, (1608), 12 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:12,387 INFO L175 Difference]: Start difference. First operand has 186 places, 194 transitions, 1928 flow. Second operand 11 states and 1263 transitions. [2022-11-18 20:40:12,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 282 transitions, 3993 flow [2022-11-18 20:40:12,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 282 transitions, 3819 flow, removed 83 selfloop flow, removed 10 redundant places. [2022-11-18 20:40:12,604 INFO L231 Difference]: Finished difference. Result has 185 places, 229 transitions, 2727 flow [2022-11-18 20:40:12,605 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=1818, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2727, PETRI_PLACES=185, PETRI_TRANSITIONS=229} [2022-11-18 20:40:12,608 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 44 predicate places. [2022-11-18 20:40:12,609 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 229 transitions, 2727 flow [2022-11-18 20:40:12,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 110.88888888888889) internal successors, (998), 9 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:12,610 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:12,610 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:12,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:40:12,610 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)] === [2022-11-18 20:40:12,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:12,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1493040452, now seen corresponding path program 2 times [2022-11-18 20:40:12,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:12,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594519478] [2022-11-18 20:40:12,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:12,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:14,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:14,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:14,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594519478] [2022-11-18 20:40:14,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594519478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:14,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:14,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:40:14,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327320842] [2022-11-18 20:40:14,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:14,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:40:14,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:14,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:40:14,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:40:14,072 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 134 [2022-11-18 20:40:14,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 229 transitions, 2727 flow. Second operand has 10 states, 10 states have (on average 109.8) internal successors, (1098), 10 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:14,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:14,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 134 [2022-11-18 20:40:14,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:15,979 INFO L130 PetriNetUnfolder]: 2279/4743 cut-off events. [2022-11-18 20:40:15,979 INFO L131 PetriNetUnfolder]: For 110176/122071 co-relation queries the response was YES. [2022-11-18 20:40:16,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39755 conditions, 4743 events. 2279/4743 cut-off events. For 110176/122071 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 36744 event pairs, 424 based on Foata normal form. 744/5257 useless extension candidates. Maximal degree in co-relation 39644. Up to 2575 conditions per place. [2022-11-18 20:40:16,104 INFO L137 encePairwiseOnDemand]: 123/134 looper letters, 90 selfloop transitions, 43 changer transitions 44/298 dead transitions. [2022-11-18 20:40:16,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 298 transitions, 4524 flow [2022-11-18 20:40:16,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:40:16,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 20:40:16,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1363 transitions. [2022-11-18 20:40:16,110 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.847636815920398 [2022-11-18 20:40:16,111 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1363 transitions. [2022-11-18 20:40:16,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1363 transitions. [2022-11-18 20:40:16,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:16,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1363 transitions. [2022-11-18 20:40:16,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 113.58333333333333) internal successors, (1363), 12 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:16,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 134.0) internal successors, (1742), 13 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:16,123 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 134.0) internal successors, (1742), 13 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:16,123 INFO L175 Difference]: Start difference. First operand has 185 places, 229 transitions, 2727 flow. Second operand 12 states and 1363 transitions. [2022-11-18 20:40:16,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 298 transitions, 4524 flow [2022-11-18 20:40:16,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 298 transitions, 4367 flow, removed 78 selfloop flow, removed 10 redundant places. [2022-11-18 20:40:16,339 INFO L231 Difference]: Finished difference. Result has 187 places, 239 transitions, 3047 flow [2022-11-18 20:40:16,340 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=2620, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3047, PETRI_PLACES=187, PETRI_TRANSITIONS=239} [2022-11-18 20:40:16,341 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 46 predicate places. [2022-11-18 20:40:16,341 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 239 transitions, 3047 flow [2022-11-18 20:40:16,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 109.8) internal successors, (1098), 10 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:16,342 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:16,343 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:16,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:40:16,343 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)] === [2022-11-18 20:40:16,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:16,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1849532567, now seen corresponding path program 1 times [2022-11-18 20:40:16,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:16,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536007586] [2022-11-18 20:40:16,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:16,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:18,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:18,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:18,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536007586] [2022-11-18 20:40:18,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536007586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:18,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:18,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 20:40:18,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443177961] [2022-11-18 20:40:18,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:18,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:40:18,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:18,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:40:18,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:40:18,189 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 134 [2022-11-18 20:40:18,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 239 transitions, 3047 flow. Second operand has 12 states, 12 states have (on average 101.08333333333333) internal successors, (1213), 12 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:18,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:18,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 134 [2022-11-18 20:40:18,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:21,955 INFO L130 PetriNetUnfolder]: 2969/6566 cut-off events. [2022-11-18 20:40:21,956 INFO L131 PetriNetUnfolder]: For 162414/189150 co-relation queries the response was YES. [2022-11-18 20:40:21,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55045 conditions, 6566 events. 2969/6566 cut-off events. For 162414/189150 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 55212 event pairs, 222 based on Foata normal form. 246/6591 useless extension candidates. Maximal degree in co-relation 54929. Up to 3040 conditions per place. [2022-11-18 20:40:22,120 INFO L137 encePairwiseOnDemand]: 116/134 looper letters, 124 selfloop transitions, 146 changer transitions 157/509 dead transitions. [2022-11-18 20:40:22,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 509 transitions, 9461 flow [2022-11-18 20:40:22,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:40:22,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 20:40:22,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3185 transitions. [2022-11-18 20:40:22,131 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7922885572139303 [2022-11-18 20:40:22,132 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3185 transitions. [2022-11-18 20:40:22,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3185 transitions. [2022-11-18 20:40:22,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:22,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3185 transitions. [2022-11-18 20:40:22,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 106.16666666666667) internal successors, (3185), 30 states have internal predecessors, (3185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:22,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 134.0) internal successors, (4154), 31 states have internal predecessors, (4154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:22,158 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 134.0) internal successors, (4154), 31 states have internal predecessors, (4154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:22,158 INFO L175 Difference]: Start difference. First operand has 187 places, 239 transitions, 3047 flow. Second operand 30 states and 3185 transitions. [2022-11-18 20:40:22,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 509 transitions, 9461 flow [2022-11-18 20:40:22,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 509 transitions, 9339 flow, removed 39 selfloop flow, removed 6 redundant places. [2022-11-18 20:40:22,513 INFO L231 Difference]: Finished difference. Result has 229 places, 302 transitions, 4912 flow [2022-11-18 20:40:22,514 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=3005, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4912, PETRI_PLACES=229, PETRI_TRANSITIONS=302} [2022-11-18 20:40:22,516 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 88 predicate places. [2022-11-18 20:40:22,517 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 302 transitions, 4912 flow [2022-11-18 20:40:22,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 101.08333333333333) internal successors, (1213), 12 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:22,518 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:22,518 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:22,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:40:22,518 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)] === [2022-11-18 20:40:22,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:22,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1531238461, now seen corresponding path program 2 times [2022-11-18 20:40:22,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:22,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480314100] [2022-11-18 20:40:22,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:22,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:23,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:23,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:23,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480314100] [2022-11-18 20:40:23,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480314100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:23,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:23,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 20:40:23,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682595751] [2022-11-18 20:40:23,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:23,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:40:23,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:23,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:40:23,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:40:23,955 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 134 [2022-11-18 20:40:23,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 302 transitions, 4912 flow. Second operand has 14 states, 14 states have (on average 108.42857142857143) internal successors, (1518), 14 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:23,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:23,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 134 [2022-11-18 20:40:23,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:27,064 INFO L130 PetriNetUnfolder]: 2316/5500 cut-off events. [2022-11-18 20:40:27,064 INFO L131 PetriNetUnfolder]: For 210681/238611 co-relation queries the response was YES. [2022-11-18 20:40:27,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53642 conditions, 5500 events. 2316/5500 cut-off events. For 210681/238611 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 47553 event pairs, 293 based on Foata normal form. 633/5915 useless extension candidates. Maximal degree in co-relation 53505. Up to 2638 conditions per place. [2022-11-18 20:40:27,160 INFO L137 encePairwiseOnDemand]: 121/134 looper letters, 104 selfloop transitions, 77 changer transitions 83/410 dead transitions. [2022-11-18 20:40:27,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 410 transitions, 8632 flow [2022-11-18 20:40:27,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:40:27,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:40:27,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2008 transitions. [2022-11-18 20:40:27,166 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8325041459369817 [2022-11-18 20:40:27,166 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2008 transitions. [2022-11-18 20:40:27,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2008 transitions. [2022-11-18 20:40:27,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:27,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2008 transitions. [2022-11-18 20:40:27,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 111.55555555555556) internal successors, (2008), 18 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:27,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 134.0) internal successors, (2546), 19 states have internal predecessors, (2546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:27,179 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 134.0) internal successors, (2546), 19 states have internal predecessors, (2546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:27,180 INFO L175 Difference]: Start difference. First operand has 229 places, 302 transitions, 4912 flow. Second operand 18 states and 2008 transitions. [2022-11-18 20:40:27,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 410 transitions, 8632 flow [2022-11-18 20:40:27,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 410 transitions, 7963 flow, removed 325 selfloop flow, removed 20 redundant places. [2022-11-18 20:40:27,730 INFO L231 Difference]: Finished difference. Result has 219 places, 308 transitions, 5070 flow [2022-11-18 20:40:27,731 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=4587, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5070, PETRI_PLACES=219, PETRI_TRANSITIONS=308} [2022-11-18 20:40:27,732 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 78 predicate places. [2022-11-18 20:40:27,732 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 308 transitions, 5070 flow [2022-11-18 20:40:27,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 108.42857142857143) internal successors, (1518), 14 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:27,733 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:27,734 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:27,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:40:27,734 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)] === [2022-11-18 20:40:27,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:27,735 INFO L85 PathProgramCache]: Analyzing trace with hash -978674169, now seen corresponding path program 1 times [2022-11-18 20:40:27,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:27,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550058092] [2022-11-18 20:40:27,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:27,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:28,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:28,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:28,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550058092] [2022-11-18 20:40:28,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550058092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:28,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:28,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:40:28,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795239941] [2022-11-18 20:40:28,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:28,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:40:28,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:28,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:40:28,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:40:28,081 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 134 [2022-11-18 20:40:28,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 308 transitions, 5070 flow. Second operand has 6 states, 6 states have (on average 110.5) internal successors, (663), 6 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:28,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:28,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 134 [2022-11-18 20:40:28,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:39,368 INFO L130 PetriNetUnfolder]: 20380/33836 cut-off events. [2022-11-18 20:40:39,368 INFO L131 PetriNetUnfolder]: For 1803363/1915415 co-relation queries the response was YES. [2022-11-18 20:40:39,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264462 conditions, 33836 events. 20380/33836 cut-off events. For 1803363/1915415 co-relation queries the response was YES. Maximal size of possible extension queue 2223. Compared 293785 event pairs, 956 based on Foata normal form. 6884/38550 useless extension candidates. Maximal degree in co-relation 264333. Up to 12875 conditions per place. [2022-11-18 20:40:40,243 INFO L137 encePairwiseOnDemand]: 123/134 looper letters, 450 selfloop transitions, 20 changer transitions 169/794 dead transitions. [2022-11-18 20:40:40,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 794 transitions, 19503 flow [2022-11-18 20:40:40,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:40:40,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:40:40,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1172 transitions. [2022-11-18 20:40:40,249 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8746268656716418 [2022-11-18 20:40:40,249 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1172 transitions. [2022-11-18 20:40:40,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1172 transitions. [2022-11-18 20:40:40,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:40,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1172 transitions. [2022-11-18 20:40:40,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 117.2) internal successors, (1172), 10 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:40,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:40,259 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:40,259 INFO L175 Difference]: Start difference. First operand has 219 places, 308 transitions, 5070 flow. Second operand 10 states and 1172 transitions. [2022-11-18 20:40:40,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 794 transitions, 19503 flow [2022-11-18 20:40:43,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 794 transitions, 18740 flow, removed 356 selfloop flow, removed 16 redundant places. [2022-11-18 20:40:43,334 INFO L231 Difference]: Finished difference. Result has 209 places, 315 transitions, 4772 flow [2022-11-18 20:40:43,335 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=4629, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4772, PETRI_PLACES=209, PETRI_TRANSITIONS=315} [2022-11-18 20:40:43,336 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 68 predicate places. [2022-11-18 20:40:43,336 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 315 transitions, 4772 flow [2022-11-18 20:40:43,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.5) internal successors, (663), 6 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:43,338 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:43,338 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:43,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:40:43,339 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)] === [2022-11-18 20:40:43,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:43,340 INFO L85 PathProgramCache]: Analyzing trace with hash 32314795, now seen corresponding path program 1 times [2022-11-18 20:40:43,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:43,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229372383] [2022-11-18 20:40:43,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:43,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:43,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:43,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:43,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229372383] [2022-11-18 20:40:43,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229372383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:43,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:43,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:40:43,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420094567] [2022-11-18 20:40:43,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:43,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:40:43,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:43,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:40:43,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:40:43,717 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 134 [2022-11-18 20:40:43,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 315 transitions, 4772 flow. Second operand has 7 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:43,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:43,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 134 [2022-11-18 20:40:43,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:54,832 INFO L130 PetriNetUnfolder]: 19200/32569 cut-off events. [2022-11-18 20:40:54,832 INFO L131 PetriNetUnfolder]: For 1692850/1809412 co-relation queries the response was YES. [2022-11-18 20:40:55,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271973 conditions, 32569 events. 19200/32569 cut-off events. For 1692850/1809412 co-relation queries the response was YES. Maximal size of possible extension queue 2414. Compared 293044 event pairs, 684 based on Foata normal form. 7496/38605 useless extension candidates. Maximal degree in co-relation 271851. Up to 11956 conditions per place. [2022-11-18 20:40:55,266 INFO L137 encePairwiseOnDemand]: 123/134 looper letters, 471 selfloop transitions, 38 changer transitions 228/886 dead transitions. [2022-11-18 20:40:55,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 886 transitions, 21413 flow [2022-11-18 20:40:55,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:40:55,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:40:55,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1527 transitions. [2022-11-18 20:40:55,271 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8765786452353617 [2022-11-18 20:40:55,271 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1527 transitions. [2022-11-18 20:40:55,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1527 transitions. [2022-11-18 20:40:55,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:55,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1527 transitions. [2022-11-18 20:40:55,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 117.46153846153847) internal successors, (1527), 13 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:55,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:55,280 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:55,281 INFO L175 Difference]: Start difference. First operand has 209 places, 315 transitions, 4772 flow. Second operand 13 states and 1527 transitions. [2022-11-18 20:40:55,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 886 transitions, 21413 flow [2022-11-18 20:41:01,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 886 transitions, 21108 flow, removed 17 selfloop flow, removed 5 redundant places. [2022-11-18 20:41:01,933 INFO L231 Difference]: Finished difference. Result has 222 places, 310 transitions, 4455 flow [2022-11-18 20:41:01,933 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=4182, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4455, PETRI_PLACES=222, PETRI_TRANSITIONS=310} [2022-11-18 20:41:01,934 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 81 predicate places. [2022-11-18 20:41:01,934 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 310 transitions, 4455 flow [2022-11-18 20:41:01,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:01,935 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:41:01,935 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:41:01,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:41:01,935 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)] === [2022-11-18 20:41:01,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:01,936 INFO L85 PathProgramCache]: Analyzing trace with hash -137553256, now seen corresponding path program 1 times [2022-11-18 20:41:01,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:01,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008214021] [2022-11-18 20:41:01,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:01,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:03,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:41:03,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:03,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008214021] [2022-11-18 20:41:03,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008214021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:41:03,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:41:03,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:41:03,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787955363] [2022-11-18 20:41:03,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:41:03,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:41:03,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:03,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:41:03,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:41:03,070 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 134 [2022-11-18 20:41:03,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 310 transitions, 4455 flow. Second operand has 7 states, 7 states have (on average 102.57142857142857) internal successors, (718), 7 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:03,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:41:03,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 134 [2022-11-18 20:41:03,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:41:07,172 INFO L130 PetriNetUnfolder]: 4599/14804 cut-off events. [2022-11-18 20:41:07,172 INFO L131 PetriNetUnfolder]: For 170549/181141 co-relation queries the response was YES. [2022-11-18 20:41:07,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80331 conditions, 14804 events. 4599/14804 cut-off events. For 170549/181141 co-relation queries the response was YES. Maximal size of possible extension queue 1635. Compared 193470 event pairs, 458 based on Foata normal form. 449/14201 useless extension candidates. Maximal degree in co-relation 80195. Up to 3986 conditions per place. [2022-11-18 20:41:07,470 INFO L137 encePairwiseOnDemand]: 126/134 looper letters, 249 selfloop transitions, 38 changer transitions 44/451 dead transitions. [2022-11-18 20:41:07,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 451 transitions, 9291 flow [2022-11-18 20:41:07,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:41:07,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:41:07,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1084 transitions. [2022-11-18 20:41:07,473 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.808955223880597 [2022-11-18 20:41:07,474 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1084 transitions. [2022-11-18 20:41:07,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1084 transitions. [2022-11-18 20:41:07,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:41:07,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1084 transitions. [2022-11-18 20:41:07,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 108.4) internal successors, (1084), 10 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:07,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:07,480 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:07,480 INFO L175 Difference]: Start difference. First operand has 222 places, 310 transitions, 4455 flow. Second operand 10 states and 1084 transitions. [2022-11-18 20:41:07,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 451 transitions, 9291 flow [2022-11-18 20:41:11,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 451 transitions, 9196 flow, removed 38 selfloop flow, removed 4 redundant places. [2022-11-18 20:41:11,079 INFO L231 Difference]: Finished difference. Result has 234 places, 313 transitions, 4518 flow [2022-11-18 20:41:11,079 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=4360, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4518, PETRI_PLACES=234, PETRI_TRANSITIONS=313} [2022-11-18 20:41:11,080 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 93 predicate places. [2022-11-18 20:41:11,080 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 313 transitions, 4518 flow [2022-11-18 20:41:11,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 102.57142857142857) internal successors, (718), 7 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:11,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:41:11,081 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:41:11,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:41:11,082 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)] === [2022-11-18 20:41:11,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:11,083 INFO L85 PathProgramCache]: Analyzing trace with hash -135014502, now seen corresponding path program 1 times [2022-11-18 20:41:11,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:11,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389118120] [2022-11-18 20:41:11,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:11,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:11,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:41:11,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:11,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389118120] [2022-11-18 20:41:11,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389118120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:41:11,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:41:11,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:41:11,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605569734] [2022-11-18 20:41:11,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:41:11,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:41:11,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:11,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:41:11,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:41:11,445 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 134 [2022-11-18 20:41:11,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 313 transitions, 4518 flow. Second operand has 8 states, 8 states have (on average 110.25) internal successors, (882), 8 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:11,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:41:11,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 134 [2022-11-18 20:41:11,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:41:27,415 INFO L130 PetriNetUnfolder]: 25403/43512 cut-off events. [2022-11-18 20:41:27,415 INFO L131 PetriNetUnfolder]: For 2355577/2510555 co-relation queries the response was YES. [2022-11-18 20:41:27,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378957 conditions, 43512 events. 25403/43512 cut-off events. For 2355577/2510555 co-relation queries the response was YES. Maximal size of possible extension queue 3267. Compared 416050 event pairs, 644 based on Foata normal form. 8755/50441 useless extension candidates. Maximal degree in co-relation 378822. Up to 15529 conditions per place. [2022-11-18 20:41:27,984 INFO L137 encePairwiseOnDemand]: 123/134 looper letters, 263 selfloop transitions, 54 changer transitions 452/910 dead transitions. [2022-11-18 20:41:27,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 910 transitions, 22009 flow [2022-11-18 20:41:27,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:41:27,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 20:41:27,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1881 transitions. [2022-11-18 20:41:27,987 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8773320895522388 [2022-11-18 20:41:27,987 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1881 transitions. [2022-11-18 20:41:27,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1881 transitions. [2022-11-18 20:41:27,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:41:27,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1881 transitions. [2022-11-18 20:41:27,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 117.5625) internal successors, (1881), 16 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:27,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 134.0) internal successors, (2278), 17 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:27,995 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 134.0) internal successors, (2278), 17 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:27,995 INFO L175 Difference]: Start difference. First operand has 234 places, 313 transitions, 4518 flow. Second operand 16 states and 1881 transitions. [2022-11-18 20:41:27,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 910 transitions, 22009 flow [2022-11-18 20:41:47,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 910 transitions, 21451 flow, removed 259 selfloop flow, removed 3 redundant places. [2022-11-18 20:41:47,775 INFO L231 Difference]: Finished difference. Result has 250 places, 266 transitions, 3381 flow [2022-11-18 20:41:47,776 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=4042, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3381, PETRI_PLACES=250, PETRI_TRANSITIONS=266} [2022-11-18 20:41:47,776 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 109 predicate places. [2022-11-18 20:41:47,777 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 266 transitions, 3381 flow [2022-11-18 20:41:47,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 110.25) internal successors, (882), 8 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:47,777 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:41:47,777 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:41:47,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:41:47,778 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)] === [2022-11-18 20:41:47,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:47,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1503458782, now seen corresponding path program 1 times [2022-11-18 20:41:47,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:47,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276867780] [2022-11-18 20:41:47,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:47,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:48,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:41:48,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:48,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276867780] [2022-11-18 20:41:48,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276867780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:41:48,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:41:48,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:41:48,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821115387] [2022-11-18 20:41:48,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:41:48,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:41:48,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:48,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:41:48,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:41:48,148 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 134 [2022-11-18 20:41:48,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 266 transitions, 3381 flow. Second operand has 9 states, 9 states have (on average 110.11111111111111) internal successors, (991), 9 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:48,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:41:48,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 134 [2022-11-18 20:41:48,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand