./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-match-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d46f3-2076-4b12-b27b-5ea0834a60f4/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d46f3-2076-4b12-b27b-5ea0834a60f4/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d46f3-2076-4b12-b27b-5ea0834a60f4/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d46f3-2076-4b12-b27b-5ea0834a60f4/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-match-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d46f3-2076-4b12-b27b-5ea0834a60f4/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d46f3-2076-4b12-b27b-5ea0834a60f4/bin/uautomizer-ug76WZFUDN --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 4221a6bcee4165c3049aa9b16a70613c9e290b9c0a4ff35026a6f2dcff16f9ff --- 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-6b4ec56 [2022-11-20 11:33:59,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:33:59,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:33:59,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:33:59,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:33:59,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:33:59,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:33:59,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:33:59,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:33:59,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:33:59,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:33:59,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:33:59,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:33:59,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:33:59,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:33:59,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:33:59,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:33:59,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:33:59,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:33:59,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:33:59,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:33:59,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:33:59,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:33:59,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:33:59,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:33:59,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:33:59,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:33:59,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:33:59,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:33:59,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:33:59,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:33:59,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:33:59,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:33:59,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:33:59,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:33:59,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:33:59,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:33:59,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:33:59,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:33:59,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:33:59,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:33:59,283 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d46f3-2076-4b12-b27b-5ea0834a60f4/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:33:59,308 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:33:59,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:33:59,309 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:33:59,309 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:33:59,310 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:33:59,310 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:33:59,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:33:59,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:33:59,312 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:33:59,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:33:59,313 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:33:59,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:33:59,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:33:59,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:33:59,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:33:59,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:33:59,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:33:59,315 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:33:59,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:33:59,316 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:33:59,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:33:59,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:33:59,317 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:33:59,317 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:33:59,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:33:59,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:33:59,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:33:59,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:33:59,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:33:59,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:33:59,319 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:33:59,319 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:33:59,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:33:59,320 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_be0d46f3-2076-4b12-b27b-5ea0834a60f4/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d46f3-2076-4b12-b27b-5ea0834a60f4/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4221a6bcee4165c3049aa9b16a70613c9e290b9c0a4ff35026a6f2dcff16f9ff [2022-11-20 11:33:59,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:33:59,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:33:59,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:33:59,664 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:33:59,665 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:33:59,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d46f3-2076-4b12-b27b-5ea0834a60f4/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-match-trans.wvr.c [2022-11-20 11:34:02,899 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:34:03,217 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:34:03,218 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d46f3-2076-4b12-b27b-5ea0834a60f4/sv-benchmarks/c/weaver/chl-match-trans.wvr.c [2022-11-20 11:34:03,228 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d46f3-2076-4b12-b27b-5ea0834a60f4/bin/uautomizer-ug76WZFUDN/data/8a2c2bf53/c3b1bc403b80410aad62fbfa1e527f01/FLAG0f61b3e6d [2022-11-20 11:34:03,253 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d46f3-2076-4b12-b27b-5ea0834a60f4/bin/uautomizer-ug76WZFUDN/data/8a2c2bf53/c3b1bc403b80410aad62fbfa1e527f01 [2022-11-20 11:34:03,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:34:03,264 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:34:03,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:34:03,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:34:03,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:34:03,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:34:03" (1/1) ... [2022-11-20 11:34:03,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b06855c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:03, skipping insertion in model container [2022-11-20 11:34:03,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:34:03" (1/1) ... [2022-11-20 11:34:03,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:34:03,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:34:03,502 WARN L237 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_be0d46f3-2076-4b12-b27b-5ea0834a60f4/sv-benchmarks/c/weaver/chl-match-trans.wvr.c[2954,2967] [2022-11-20 11:34:03,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:34:03,521 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:34:03,549 WARN L237 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_be0d46f3-2076-4b12-b27b-5ea0834a60f4/sv-benchmarks/c/weaver/chl-match-trans.wvr.c[2954,2967] [2022-11-20 11:34:03,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:34:03,569 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:34:03,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:03 WrapperNode [2022-11-20 11:34:03,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:34:03,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:34:03,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:34:03,572 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:34:03,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:03" (1/1) ... [2022-11-20 11:34:03,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:03" (1/1) ... [2022-11-20 11:34:03,629 INFO L138 Inliner]: procedures = 23, calls = 33, calls flagged for inlining = 11, calls inlined = 21, statements flattened = 202 [2022-11-20 11:34:03,631 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:34:03,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:34:03,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:34:03,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:34:03,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:03" (1/1) ... [2022-11-20 11:34:03,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:03" (1/1) ... [2022-11-20 11:34:03,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:03" (1/1) ... [2022-11-20 11:34:03,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:03" (1/1) ... [2022-11-20 11:34:03,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:03" (1/1) ... [2022-11-20 11:34:03,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:03" (1/1) ... [2022-11-20 11:34:03,674 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:03" (1/1) ... [2022-11-20 11:34:03,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:03" (1/1) ... [2022-11-20 11:34:03,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:34:03,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:34:03,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:34:03,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:34:03,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:03" (1/1) ... [2022-11-20 11:34:03,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:34:03,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d46f3-2076-4b12-b27b-5ea0834a60f4/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:34:03,730 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d46f3-2076-4b12-b27b-5ea0834a60f4/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:34:03,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d46f3-2076-4b12-b27b-5ea0834a60f4/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:34:03,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:34:03,793 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:34:03,793 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:34:03,793 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:34:03,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:34:03,794 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 11:34:03,795 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 11:34:03,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:34:03,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:34:03,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:34:03,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:34:03,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:34:03,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:34:03,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:34:03,798 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:34:03,964 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:34:03,966 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:34:04,570 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:34:04,587 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:34:04,588 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 11:34:04,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:34:04 BoogieIcfgContainer [2022-11-20 11:34:04,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:34:04,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:34:04,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:34:04,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:34:04,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:34:03" (1/3) ... [2022-11-20 11:34:04,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f24248b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:34:04, skipping insertion in model container [2022-11-20 11:34:04,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:34:03" (2/3) ... [2022-11-20 11:34:04,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f24248b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:34:04, skipping insertion in model container [2022-11-20 11:34:04,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:34:04" (3/3) ... [2022-11-20 11:34:04,605 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-trans.wvr.c [2022-11-20 11:34:04,616 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:34:04,631 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:34:04,632 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:34:04,632 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:34:04,833 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 11:34:04,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 281 transitions, 586 flow [2022-11-20 11:34:05,075 INFO L130 PetriNetUnfolder]: 13/278 cut-off events. [2022-11-20 11:34:05,076 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 11:34:05,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 278 events. 13/278 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 408 event pairs, 0 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 196. Up to 2 conditions per place. [2022-11-20 11:34:05,096 INFO L82 GeneralOperation]: Start removeDead. Operand has 278 places, 281 transitions, 586 flow [2022-11-20 11:34:05,106 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 264 places, 267 transitions, 552 flow [2022-11-20 11:34:05,119 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:34:05,128 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;@587fa4b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:34:05,129 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-20 11:34:05,380 INFO L130 PetriNetUnfolder]: 13/266 cut-off events. [2022-11-20 11:34:05,380 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 11:34:05,381 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:05,383 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:05,384 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:34:05,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:05,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1578198430, now seen corresponding path program 1 times [2022-11-20 11:34:05,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:05,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075431462] [2022-11-20 11:34:05,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:05,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:12,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:34:12,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:12,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075431462] [2022-11-20 11:34:12,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075431462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:12,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:12,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-11-20 11:34:12,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481112402] [2022-11-20 11:34:12,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:12,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-20 11:34:12,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:12,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-20 11:34:13,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2022-11-20 11:34:13,073 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 281 [2022-11-20 11:34:13,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 267 transitions, 552 flow. Second operand has 43 states, 43 states have (on average 162.46511627906978) internal successors, (6986), 43 states have internal predecessors, (6986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:13,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:13,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 281 [2022-11-20 11:34:13,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:52,216 INFO L130 PetriNetUnfolder]: 36422/79033 cut-off events. [2022-11-20 11:34:52,216 INFO L131 PetriNetUnfolder]: For 2977/2977 co-relation queries the response was YES. [2022-11-20 11:34:52,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137370 conditions, 79033 events. 36422/79033 cut-off events. For 2977/2977 co-relation queries the response was YES. Maximal size of possible extension queue 1101. Compared 842760 event pairs, 1975 based on Foata normal form. 8626/84271 useless extension candidates. Maximal degree in co-relation 136879. Up to 6165 conditions per place. [2022-11-20 11:34:52,846 INFO L137 encePairwiseOnDemand]: 211/281 looper letters, 1409 selfloop transitions, 36 changer transitions 50/1642 dead transitions. [2022-11-20 11:34:52,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 1642 transitions, 6460 flow [2022-11-20 11:34:52,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-20 11:34:52,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-11-20 11:34:52,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 11003 transitions. [2022-11-20 11:34:52,905 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6751135108602282 [2022-11-20 11:34:52,907 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 11003 transitions. [2022-11-20 11:34:52,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 11003 transitions. [2022-11-20 11:34:52,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:52,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 11003 transitions. [2022-11-20 11:34:52,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 189.70689655172413) internal successors, (11003), 58 states have internal predecessors, (11003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:53,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 281.0) internal successors, (16579), 59 states have internal predecessors, (16579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:53,014 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 281.0) internal successors, (16579), 59 states have internal predecessors, (16579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:53,017 INFO L175 Difference]: Start difference. First operand has 264 places, 267 transitions, 552 flow. Second operand 58 states and 11003 transitions. [2022-11-20 11:34:53,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 1642 transitions, 6460 flow [2022-11-20 11:34:53,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 1642 transitions, 6336 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 11:34:53,067 INFO L231 Difference]: Finished difference. Result has 352 places, 270 transitions, 727 flow [2022-11-20 11:34:53,070 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=727, PETRI_PLACES=352, PETRI_TRANSITIONS=270} [2022-11-20 11:34:53,077 INFO L288 CegarLoopForPetriNet]: 264 programPoint places, 88 predicate places. [2022-11-20 11:34:53,079 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 270 transitions, 727 flow [2022-11-20 11:34:53,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 162.46511627906978) internal successors, (6986), 43 states have internal predecessors, (6986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:53,085 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:53,086 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:53,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:34:53,087 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:34:53,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:53,090 INFO L85 PathProgramCache]: Analyzing trace with hash 604366772, now seen corresponding path program 2 times [2022-11-20 11:34:53,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:53,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532296115] [2022-11-20 11:34:53,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:53,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:58,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:34:58,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:58,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532296115] [2022-11-20 11:34:58,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532296115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:58,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:58,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-11-20 11:34:58,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629261888] [2022-11-20 11:34:58,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:58,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-20 11:34:58,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:58,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-20 11:34:58,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2022-11-20 11:34:58,682 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 281 [2022-11-20 11:34:58,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 270 transitions, 727 flow. Second operand has 43 states, 43 states have (on average 162.46511627906978) internal successors, (6986), 43 states have internal predecessors, (6986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:58,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:58,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 281 [2022-11-20 11:34:58,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand