./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1ae0b2-0b57-4f78-9912-73ffe10d26a4/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1ae0b2-0b57-4f78-9912-73ffe10d26a4/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1ae0b2-0b57-4f78-9912-73ffe10d26a4/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1ae0b2-0b57-4f78-9912-73ffe10d26a4/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1ae0b2-0b57-4f78-9912-73ffe10d26a4/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1ae0b2-0b57-4f78-9912-73ffe10d26a4/bin/uautomizer-DrprNOufMa --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 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:17:35,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:17:35,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:17:35,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:17:35,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:17:35,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:17:35,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:17:35,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:17:35,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:17:35,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:17:35,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:17:35,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:17:35,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:17:35,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:17:35,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:17:35,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:17:35,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:17:35,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:17:35,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:17:35,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:17:35,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:17:35,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:17:35,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:17:35,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:17:35,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:17:35,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:17:35,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:17:35,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:17:35,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:17:35,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:17:35,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:17:35,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:17:35,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:17:35,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:17:35,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:17:35,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:17:35,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:17:35,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:17:35,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:17:35,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:17:35,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:17:35,286 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1ae0b2-0b57-4f78-9912-73ffe10d26a4/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 18:17:35,315 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:17:35,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:17:35,315 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:17:35,316 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:17:35,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:17:35,316 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:17:35,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:17:35,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:17:35,317 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:17:35,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:17:35,318 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:17:35,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:17:35,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:17:35,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:17:35,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:17:35,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:17:35,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:17:35,319 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:17:35,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:17:35,319 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:17:35,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:17:35,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:17:35,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:17:35,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:17:35,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:17:35,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:17:35,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:17:35,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:17:35,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:17:35,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:17:35,321 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:17:35,322 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:17:35,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:17:35,322 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:17:35,322 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_9a1ae0b2-0b57-4f78-9912-73ffe10d26a4/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1ae0b2-0b57-4f78-9912-73ffe10d26a4/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b [2021-12-06 18:17:35,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:17:35,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:17:35,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:17:35,520 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:17:35,520 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:17:35,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1ae0b2-0b57-4f78-9912-73ffe10d26a4/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-12-06 18:17:35,564 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1ae0b2-0b57-4f78-9912-73ffe10d26a4/bin/uautomizer-DrprNOufMa/data/9e9c5f915/75c36dbfc9324c60a80f1fc596943ffc/FLAG77ab8da07 [2021-12-06 18:17:35,981 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:17:35,981 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1ae0b2-0b57-4f78-9912-73ffe10d26a4/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-12-06 18:17:35,994 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1ae0b2-0b57-4f78-9912-73ffe10d26a4/bin/uautomizer-DrprNOufMa/data/9e9c5f915/75c36dbfc9324c60a80f1fc596943ffc/FLAG77ab8da07 [2021-12-06 18:17:36,003 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1ae0b2-0b57-4f78-9912-73ffe10d26a4/bin/uautomizer-DrprNOufMa/data/9e9c5f915/75c36dbfc9324c60a80f1fc596943ffc [2021-12-06 18:17:36,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:17:36,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:17:36,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:17:36,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:17:36,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:17:36,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:17:36" (1/1) ... [2021-12-06 18:17:36,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71871b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:17:36, skipping insertion in model container [2021-12-06 18:17:36,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:17:36" (1/1) ... [2021-12-06 18:17:36,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:17:36,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:17:36,154 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1ae0b2-0b57-4f78-9912-73ffe10d26a4/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-12-06 18:17:36,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:17:36,268 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:17:36,278 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1ae0b2-0b57-4f78-9912-73ffe10d26a4/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-12-06 18:17:36,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:17:36,342 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:17:36,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:17:36 WrapperNode [2021-12-06 18:17:36,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:17:36,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:17:36,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:17:36,344 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:17:36,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:17:36" (1/1) ... [2021-12-06 18:17:36,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:17:36" (1/1) ... [2021-12-06 18:17:36,384 INFO L137 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2021-12-06 18:17:36,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:17:36,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:17:36,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:17:36,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:17:36,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:17:36" (1/1) ... [2021-12-06 18:17:36,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:17:36" (1/1) ... [2021-12-06 18:17:36,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:17:36" (1/1) ... [2021-12-06 18:17:36,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:17:36" (1/1) ... [2021-12-06 18:17:36,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:17:36" (1/1) ... [2021-12-06 18:17:36,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:17:36" (1/1) ... [2021-12-06 18:17:36,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:17:36" (1/1) ... [2021-12-06 18:17:36,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:17:36,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:17:36,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:17:36,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:17:36,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:17:36" (1/1) ... [2021-12-06 18:17:36,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:17:36,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1ae0b2-0b57-4f78-9912-73ffe10d26a4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:17:36,433 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1ae0b2-0b57-4f78-9912-73ffe10d26a4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:17:36,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1ae0b2-0b57-4f78-9912-73ffe10d26a4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:17:36,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 18:17:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-06 18:17:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:17:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 18:17:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 18:17:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-12-06 18:17:36,462 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-12-06 18:17:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-12-06 18:17:36,462 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-12-06 18:17:36,463 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-12-06 18:17:36,463 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-12-06 18:17:36,463 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-12-06 18:17:36,463 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-12-06 18:17:36,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:17:36,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-06 18:17:36,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:17:36,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:17:36,464 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-06 18:17:36,539 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:17:36,540 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:17:36,666 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:17:36,673 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:17:36,673 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 18:17:36,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:17:36 BoogieIcfgContainer [2021-12-06 18:17:36,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:17:36,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:17:36,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:17:36,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:17:36,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:17:36" (1/3) ... [2021-12-06 18:17:36,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee3201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:17:36, skipping insertion in model container [2021-12-06 18:17:36,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:17:36" (2/3) ... [2021-12-06 18:17:36,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee3201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:17:36, skipping insertion in model container [2021-12-06 18:17:36,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:17:36" (3/3) ... [2021-12-06 18:17:36,683 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-12-06 18:17:36,688 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-06 18:17:36,688 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:17:36,688 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 18:17:36,689 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-06 18:17:36,717 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,718 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,718 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,718 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,718 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,719 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,719 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,719 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,719 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,719 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,720 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,720 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,720 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,720 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,720 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,721 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,721 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,722 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,722 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,722 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,722 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,722 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,723 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,723 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,723 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,723 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,723 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,724 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,724 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,724 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,724 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,724 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,725 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,725 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,725 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,725 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,726 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,726 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,726 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,726 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,726 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,726 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,726 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,727 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,727 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,727 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,727 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,727 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,731 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,731 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,731 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,731 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,735 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,735 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,735 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,735 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,736 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,736 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,737 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,737 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,738 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,738 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,738 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,738 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:17:36,739 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-06 18:17:36,777 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:17:36,782 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 18:17:36,782 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-12-06 18:17:36,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 117 places, 106 transitions, 232 flow [2021-12-06 18:17:36,830 INFO L129 PetriNetUnfolder]: 2/102 cut-off events. [2021-12-06 18:17:36,830 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 18:17:36,833 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 2/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2021-12-06 18:17:36,833 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 106 transitions, 232 flow [2021-12-06 18:17:36,837 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 86 transitions, 184 flow [2021-12-06 18:17:36,855 INFO L129 PetriNetUnfolder]: 1/85 cut-off events. [2021-12-06 18:17:36,855 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 18:17:36,855 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:17:36,856 INFO L254 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] [2021-12-06 18:17:36,856 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-06 18:17:36,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:17:36,860 INFO L85 PathProgramCache]: Analyzing trace with hash -793453068, now seen corresponding path program 1 times [2021-12-06 18:17:36,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:17:36,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458900991] [2021-12-06 18:17:36,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:36,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:17:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:37,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:17:37,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:17:37,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458900991] [2021-12-06 18:17:37,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458900991] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:17:37,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:17:37,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:17:37,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62907415] [2021-12-06 18:17:37,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:17:37,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:17:37,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:17:37,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:17:37,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:17:37,290 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 106 [2021-12-06 18:17:37,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 86 transitions, 184 flow. Second operand has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 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) [2021-12-06 18:17:37,295 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:17:37,295 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 106 [2021-12-06 18:17:37,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:17:37,603 INFO L129 PetriNetUnfolder]: 293/842 cut-off events. [2021-12-06 18:17:37,604 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2021-12-06 18:17:37,607 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1399 conditions, 842 events. 293/842 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4968 event pairs, 50 based on Foata normal form. 30/840 useless extension candidates. Maximal degree in co-relation 1360. Up to 190 conditions per place. [2021-12-06 18:17:37,612 INFO L132 encePairwiseOnDemand]: 93/106 looper letters, 23 selfloop transitions, 8 changer transitions 44/141 dead transitions. [2021-12-06 18:17:37,612 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 141 transitions, 450 flow [2021-12-06 18:17:37,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 18:17:37,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 18:17:37,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1160 transitions. [2021-12-06 18:17:37,626 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.841799709724238 [2021-12-06 18:17:37,627 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1160 transitions. [2021-12-06 18:17:37,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1160 transitions. [2021-12-06 18:17:37,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:17:37,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1160 transitions. [2021-12-06 18:17:37,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 89.23076923076923) internal successors, (1160), 13 states have internal predecessors, (1160), 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) [2021-12-06 18:17:37,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:17:37,646 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:17:37,648 INFO L186 Difference]: Start difference. First operand has 98 places, 86 transitions, 184 flow. Second operand 13 states and 1160 transitions. [2021-12-06 18:17:37,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 141 transitions, 450 flow [2021-12-06 18:17:37,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 141 transitions, 444 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-06 18:17:37,654 INFO L242 Difference]: Finished difference. Result has 117 places, 88 transitions, 254 flow [2021-12-06 18:17:37,656 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=254, PETRI_PLACES=117, PETRI_TRANSITIONS=88} [2021-12-06 18:17:37,659 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 19 predicate places. [2021-12-06 18:17:37,659 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 88 transitions, 254 flow [2021-12-06 18:17:37,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 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) [2021-12-06 18:17:37,659 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:17:37,660 INFO L254 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] [2021-12-06 18:17:37,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:17:37,660 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-06 18:17:37,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:17:37,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1490256525, now seen corresponding path program 1 times [2021-12-06 18:17:37,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:17:37,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813274387] [2021-12-06 18:17:37,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:37,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:17:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:37,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:17:37,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:17:37,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813274387] [2021-12-06 18:17:37,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813274387] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:17:37,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:17:37,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:17:37,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361205772] [2021-12-06 18:17:37,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:17:37,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:17:37,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:17:37,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:17:37,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:17:37,795 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 106 [2021-12-06 18:17:37,796 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 88 transitions, 254 flow. Second operand has 7 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 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) [2021-12-06 18:17:37,796 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:17:37,796 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 106 [2021-12-06 18:17:37,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:17:38,044 INFO L129 PetriNetUnfolder]: 195/618 cut-off events. [2021-12-06 18:17:38,044 INFO L130 PetriNetUnfolder]: For 1217/1576 co-relation queries the response was YES. [2021-12-06 18:17:38,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1921 conditions, 618 events. 195/618 cut-off events. For 1217/1576 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3421 event pairs, 23 based on Foata normal form. 18/611 useless extension candidates. Maximal degree in co-relation 1870. Up to 186 conditions per place. [2021-12-06 18:17:38,051 INFO L132 encePairwiseOnDemand]: 97/106 looper letters, 28 selfloop transitions, 6 changer transitions 40/140 dead transitions. [2021-12-06 18:17:38,051 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 140 transitions, 739 flow [2021-12-06 18:17:38,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 18:17:38,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 18:17:38,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1148 transitions. [2021-12-06 18:17:38,055 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8330914368650217 [2021-12-06 18:17:38,055 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1148 transitions. [2021-12-06 18:17:38,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1148 transitions. [2021-12-06 18:17:38,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:17:38,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1148 transitions. [2021-12-06 18:17:38,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 88.3076923076923) internal successors, (1148), 13 states have internal predecessors, (1148), 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) [2021-12-06 18:17:38,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:17:38,064 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:17:38,064 INFO L186 Difference]: Start difference. First operand has 117 places, 88 transitions, 254 flow. Second operand 13 states and 1148 transitions. [2021-12-06 18:17:38,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 140 transitions, 739 flow [2021-12-06 18:17:38,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 140 transitions, 659 flow, removed 24 selfloop flow, removed 8 redundant places. [2021-12-06 18:17:38,074 INFO L242 Difference]: Finished difference. Result has 124 places, 90 transitions, 300 flow [2021-12-06 18:17:38,075 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=300, PETRI_PLACES=124, PETRI_TRANSITIONS=90} [2021-12-06 18:17:38,075 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 26 predicate places. [2021-12-06 18:17:38,075 INFO L470 AbstractCegarLoop]: Abstraction has has 124 places, 90 transitions, 300 flow [2021-12-06 18:17:38,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 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) [2021-12-06 18:17:38,076 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:17:38,076 INFO L254 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] [2021-12-06 18:17:38,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:17:38,076 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-06 18:17:38,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:17:38,077 INFO L85 PathProgramCache]: Analyzing trace with hash -142393454, now seen corresponding path program 1 times [2021-12-06 18:17:38,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:17:38,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122343956] [2021-12-06 18:17:38,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:38,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:17:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:17:38,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:17:38,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122343956] [2021-12-06 18:17:38,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122343956] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:17:38,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:17:38,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:17:38,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515491006] [2021-12-06 18:17:38,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:17:38,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:17:38,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:17:38,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:17:38,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:17:38,188 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 106 [2021-12-06 18:17:38,189 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 90 transitions, 300 flow. Second operand has 7 states, 7 states have (on average 85.28571428571429) internal successors, (597), 7 states have internal predecessors, (597), 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) [2021-12-06 18:17:38,189 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:17:38,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 106 [2021-12-06 18:17:38,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:17:38,398 INFO L129 PetriNetUnfolder]: 118/472 cut-off events. [2021-12-06 18:17:38,399 INFO L130 PetriNetUnfolder]: For 1355/1516 co-relation queries the response was YES. [2021-12-06 18:17:38,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1524 conditions, 472 events. 118/472 cut-off events. For 1355/1516 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2330 event pairs, 13 based on Foata normal form. 19/472 useless extension candidates. Maximal degree in co-relation 1468. Up to 117 conditions per place. [2021-12-06 18:17:38,405 INFO L132 encePairwiseOnDemand]: 94/106 looper letters, 23 selfloop transitions, 13 changer transitions 34/136 dead transitions. [2021-12-06 18:17:38,406 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 136 transitions, 827 flow [2021-12-06 18:17:38,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 18:17:38,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 18:17:38,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1149 transitions. [2021-12-06 18:17:38,409 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8338171262699564 [2021-12-06 18:17:38,409 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1149 transitions. [2021-12-06 18:17:38,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1149 transitions. [2021-12-06 18:17:38,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:17:38,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1149 transitions. [2021-12-06 18:17:38,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 88.38461538461539) internal successors, (1149), 13 states have internal predecessors, (1149), 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) [2021-12-06 18:17:38,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:17:38,416 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:17:38,416 INFO L186 Difference]: Start difference. First operand has 124 places, 90 transitions, 300 flow. Second operand 13 states and 1149 transitions. [2021-12-06 18:17:38,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 136 transitions, 827 flow [2021-12-06 18:17:38,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 136 transitions, 751 flow, removed 36 selfloop flow, removed 4 redundant places. [2021-12-06 18:17:38,424 INFO L242 Difference]: Finished difference. Result has 133 places, 93 transitions, 367 flow [2021-12-06 18:17:38,424 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=367, PETRI_PLACES=133, PETRI_TRANSITIONS=93} [2021-12-06 18:17:38,425 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 35 predicate places. [2021-12-06 18:17:38,425 INFO L470 AbstractCegarLoop]: Abstraction has has 133 places, 93 transitions, 367 flow [2021-12-06 18:17:38,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.28571428571429) internal successors, (597), 7 states have internal predecessors, (597), 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) [2021-12-06 18:17:38,425 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:17:38,426 INFO L254 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] [2021-12-06 18:17:38,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 18:17:38,426 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-06 18:17:38,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:17:38,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1023290001, now seen corresponding path program 1 times [2021-12-06 18:17:38,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:17:38,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339790478] [2021-12-06 18:17:38,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:38,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:17:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:17:38,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:17:38,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339790478] [2021-12-06 18:17:38,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339790478] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:17:38,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:17:38,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:17:38,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937025398] [2021-12-06 18:17:38,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:17:38,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:17:38,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:17:38,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:17:38,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:17:38,520 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 106 [2021-12-06 18:17:38,520 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 93 transitions, 367 flow. Second operand has 7 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 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) [2021-12-06 18:17:38,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:17:38,521 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 106 [2021-12-06 18:17:38,521 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:17:38,673 INFO L129 PetriNetUnfolder]: 72/408 cut-off events. [2021-12-06 18:17:38,673 INFO L130 PetriNetUnfolder]: For 1292/1494 co-relation queries the response was YES. [2021-12-06 18:17:38,676 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1281 conditions, 408 events. 72/408 cut-off events. For 1292/1494 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1978 event pairs, 22 based on Foata normal form. 11/401 useless extension candidates. Maximal degree in co-relation 1235. Up to 83 conditions per place. [2021-12-06 18:17:38,679 INFO L132 encePairwiseOnDemand]: 95/106 looper letters, 26 selfloop transitions, 12 changer transitions 17/121 dead transitions. [2021-12-06 18:17:38,679 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 121 transitions, 732 flow [2021-12-06 18:17:38,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:17:38,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-06 18:17:38,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 881 transitions. [2021-12-06 18:17:38,683 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8311320754716981 [2021-12-06 18:17:38,683 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 881 transitions. [2021-12-06 18:17:38,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 881 transitions. [2021-12-06 18:17:38,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:17:38,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 881 transitions. [2021-12-06 18:17:38,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 88.1) internal successors, (881), 10 states have internal predecessors, (881), 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) [2021-12-06 18:17:38,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 106.0) internal successors, (1166), 11 states have internal predecessors, (1166), 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) [2021-12-06 18:17:38,690 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 106.0) internal successors, (1166), 11 states have internal predecessors, (1166), 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) [2021-12-06 18:17:38,690 INFO L186 Difference]: Start difference. First operand has 133 places, 93 transitions, 367 flow. Second operand 10 states and 881 transitions. [2021-12-06 18:17:38,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 121 transitions, 732 flow [2021-12-06 18:17:38,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 121 transitions, 618 flow, removed 51 selfloop flow, removed 16 redundant places. [2021-12-06 18:17:38,699 INFO L242 Difference]: Finished difference. Result has 125 places, 95 transitions, 391 flow [2021-12-06 18:17:38,699 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=391, PETRI_PLACES=125, PETRI_TRANSITIONS=95} [2021-12-06 18:17:38,700 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 27 predicate places. [2021-12-06 18:17:38,700 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 95 transitions, 391 flow [2021-12-06 18:17:38,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 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) [2021-12-06 18:17:38,701 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:17:38,701 INFO L254 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] [2021-12-06 18:17:38,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 18:17:38,701 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-06 18:17:38,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:17:38,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1955920115, now seen corresponding path program 1 times [2021-12-06 18:17:38,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:17:38,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242327639] [2021-12-06 18:17:38,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:38,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:17:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:38,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:17:38,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:17:38,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242327639] [2021-12-06 18:17:38,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242327639] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:17:38,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:17:38,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:17:38,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929393268] [2021-12-06 18:17:38,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:17:38,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:17:38,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:17:38,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:17:38,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:17:38,813 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 106 [2021-12-06 18:17:38,814 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 95 transitions, 391 flow. Second operand has 8 states, 8 states have (on average 85.125) internal successors, (681), 8 states have internal predecessors, (681), 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) [2021-12-06 18:17:38,814 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:17:38,814 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 106 [2021-12-06 18:17:38,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:17:38,930 INFO L129 PetriNetUnfolder]: 69/405 cut-off events. [2021-12-06 18:17:38,930 INFO L130 PetriNetUnfolder]: For 1276/2387 co-relation queries the response was YES. [2021-12-06 18:17:38,933 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1282 conditions, 405 events. 69/405 cut-off events. For 1276/2387 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2107 event pairs, 26 based on Foata normal form. 9/393 useless extension candidates. Maximal degree in co-relation 1219. Up to 78 conditions per place. [2021-12-06 18:17:38,935 INFO L132 encePairwiseOnDemand]: 96/106 looper letters, 24 selfloop transitions, 9 changer transitions 23/122 dead transitions. [2021-12-06 18:17:38,935 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 122 transitions, 741 flow [2021-12-06 18:17:38,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:17:38,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-06 18:17:38,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 710 transitions. [2021-12-06 18:17:38,938 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8372641509433962 [2021-12-06 18:17:38,938 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 710 transitions. [2021-12-06 18:17:38,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 710 transitions. [2021-12-06 18:17:38,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:17:38,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 710 transitions. [2021-12-06 18:17:38,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 88.75) internal successors, (710), 8 states have internal predecessors, (710), 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) [2021-12-06 18:17:38,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 106.0) internal successors, (954), 9 states have internal predecessors, (954), 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) [2021-12-06 18:17:38,944 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 106.0) internal successors, (954), 9 states have internal predecessors, (954), 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) [2021-12-06 18:17:38,944 INFO L186 Difference]: Start difference. First operand has 125 places, 95 transitions, 391 flow. Second operand 8 states and 710 transitions. [2021-12-06 18:17:38,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 122 transitions, 741 flow [2021-12-06 18:17:38,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 122 transitions, 676 flow, removed 24 selfloop flow, removed 7 redundant places. [2021-12-06 18:17:38,951 INFO L242 Difference]: Finished difference. Result has 123 places, 92 transitions, 354 flow [2021-12-06 18:17:38,952 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=354, PETRI_PLACES=123, PETRI_TRANSITIONS=92} [2021-12-06 18:17:38,953 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 25 predicate places. [2021-12-06 18:17:38,953 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 92 transitions, 354 flow [2021-12-06 18:17:38,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.125) internal successors, (681), 8 states have internal predecessors, (681), 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) [2021-12-06 18:17:38,953 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:17:38,953 INFO L254 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] [2021-12-06 18:17:38,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 18:17:38,954 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-06 18:17:38,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:17:38,954 INFO L85 PathProgramCache]: Analyzing trace with hash -571419627, now seen corresponding path program 2 times [2021-12-06 18:17:38,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:17:38,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612813317] [2021-12-06 18:17:38,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:38,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:17:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:39,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:17:39,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:17:39,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612813317] [2021-12-06 18:17:39,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612813317] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:17:39,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:17:39,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:17:39,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19319234] [2021-12-06 18:17:39,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:17:39,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:17:39,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:17:39,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:17:39,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:17:39,049 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 106 [2021-12-06 18:17:39,050 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 92 transitions, 354 flow. Second operand has 8 states, 8 states have (on average 83.25) internal successors, (666), 8 states have internal predecessors, (666), 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) [2021-12-06 18:17:39,050 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:17:39,050 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 106 [2021-12-06 18:17:39,050 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:17:39,214 INFO L129 PetriNetUnfolder]: 128/540 cut-off events. [2021-12-06 18:17:39,215 INFO L130 PetriNetUnfolder]: For 1894/2918 co-relation queries the response was YES. [2021-12-06 18:17:39,217 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1699 conditions, 540 events. 128/540 cut-off events. For 1894/2918 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3134 event pairs, 16 based on Foata normal form. 15/540 useless extension candidates. Maximal degree in co-relation 1635. Up to 98 conditions per place. [2021-12-06 18:17:39,219 INFO L132 encePairwiseOnDemand]: 92/106 looper letters, 29 selfloop transitions, 12 changer transitions 45/150 dead transitions. [2021-12-06 18:17:39,219 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 150 transitions, 1080 flow [2021-12-06 18:17:39,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 18:17:39,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-06 18:17:39,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 957 transitions. [2021-12-06 18:17:39,221 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8207547169811321 [2021-12-06 18:17:39,221 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 957 transitions. [2021-12-06 18:17:39,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 957 transitions. [2021-12-06 18:17:39,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:17:39,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 957 transitions. [2021-12-06 18:17:39,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 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) [2021-12-06 18:17:39,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 106.0) internal successors, (1272), 12 states have internal predecessors, (1272), 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) [2021-12-06 18:17:39,226 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 106.0) internal successors, (1272), 12 states have internal predecessors, (1272), 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) [2021-12-06 18:17:39,227 INFO L186 Difference]: Start difference. First operand has 123 places, 92 transitions, 354 flow. Second operand 11 states and 957 transitions. [2021-12-06 18:17:39,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 150 transitions, 1080 flow [2021-12-06 18:17:39,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 150 transitions, 838 flow, removed 45 selfloop flow, removed 11 redundant places. [2021-12-06 18:17:39,233 INFO L242 Difference]: Finished difference. Result has 127 places, 92 transitions, 333 flow [2021-12-06 18:17:39,234 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=333, PETRI_PLACES=127, PETRI_TRANSITIONS=92} [2021-12-06 18:17:39,234 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 29 predicate places. [2021-12-06 18:17:39,234 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 92 transitions, 333 flow [2021-12-06 18:17:39,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 83.25) internal successors, (666), 8 states have internal predecessors, (666), 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) [2021-12-06 18:17:39,235 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:17:39,235 INFO L254 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] [2021-12-06 18:17:39,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 18:17:39,236 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-06 18:17:39,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:17:39,236 INFO L85 PathProgramCache]: Analyzing trace with hash 250416312, now seen corresponding path program 1 times [2021-12-06 18:17:39,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:17:39,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887981262] [2021-12-06 18:17:39,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:39,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:17:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:39,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:17:39,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:17:39,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887981262] [2021-12-06 18:17:39,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887981262] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:17:39,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:17:39,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:17:39,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927616932] [2021-12-06 18:17:39,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:17:39,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:17:39,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:17:39,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:17:39,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:17:39,320 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 106 [2021-12-06 18:17:39,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 92 transitions, 333 flow. Second operand has 6 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 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) [2021-12-06 18:17:39,321 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:17:39,321 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 106 [2021-12-06 18:17:39,321 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:17:39,613 INFO L129 PetriNetUnfolder]: 1341/2737 cut-off events. [2021-12-06 18:17:39,613 INFO L130 PetriNetUnfolder]: For 1308/1383 co-relation queries the response was YES. [2021-12-06 18:17:39,624 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5588 conditions, 2737 events. 1341/2737 cut-off events. For 1308/1383 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 20766 event pairs, 87 based on Foata normal form. 0/2422 useless extension candidates. Maximal degree in co-relation 5526. Up to 885 conditions per place. [2021-12-06 18:17:39,633 INFO L132 encePairwiseOnDemand]: 95/106 looper letters, 35 selfloop transitions, 20 changer transitions 0/131 dead transitions. [2021-12-06 18:17:39,633 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 131 transitions, 525 flow [2021-12-06 18:17:39,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:17:39,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-06 18:17:39,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 927 transitions. [2021-12-06 18:17:39,636 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8745283018867924 [2021-12-06 18:17:39,636 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 927 transitions. [2021-12-06 18:17:39,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 927 transitions. [2021-12-06 18:17:39,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:17:39,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 927 transitions. [2021-12-06 18:17:39,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 92.7) internal successors, (927), 10 states have internal predecessors, (927), 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) [2021-12-06 18:17:39,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 106.0) internal successors, (1166), 11 states have internal predecessors, (1166), 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) [2021-12-06 18:17:39,641 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 106.0) internal successors, (1166), 11 states have internal predecessors, (1166), 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) [2021-12-06 18:17:39,641 INFO L186 Difference]: Start difference. First operand has 127 places, 92 transitions, 333 flow. Second operand 10 states and 927 transitions. [2021-12-06 18:17:39,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 131 transitions, 525 flow [2021-12-06 18:17:39,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 131 transitions, 483 flow, removed 8 selfloop flow, removed 11 redundant places. [2021-12-06 18:17:39,647 INFO L242 Difference]: Finished difference. Result has 125 places, 110 transitions, 434 flow [2021-12-06 18:17:39,647 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=434, PETRI_PLACES=125, PETRI_TRANSITIONS=110} [2021-12-06 18:17:39,648 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 27 predicate places. [2021-12-06 18:17:39,648 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 110 transitions, 434 flow [2021-12-06 18:17:39,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 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) [2021-12-06 18:17:39,648 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:17:39,649 INFO L254 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] [2021-12-06 18:17:39,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 18:17:39,649 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-06 18:17:39,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:17:39,649 INFO L85 PathProgramCache]: Analyzing trace with hash 647604770, now seen corresponding path program 1 times [2021-12-06 18:17:39,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:17:39,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111609039] [2021-12-06 18:17:39,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:39,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:17:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:39,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:17:39,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:17:39,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111609039] [2021-12-06 18:17:39,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111609039] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:17:39,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:17:39,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:17:39,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640390739] [2021-12-06 18:17:39,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:17:39,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:17:39,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:17:39,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:17:39,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:17:39,725 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 106 [2021-12-06 18:17:39,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 110 transitions, 434 flow. Second operand has 7 states, 7 states have (on average 88.71428571428571) internal successors, (621), 7 states have internal predecessors, (621), 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) [2021-12-06 18:17:39,726 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:17:39,726 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 106 [2021-12-06 18:17:39,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:17:40,154 INFO L129 PetriNetUnfolder]: 1474/3021 cut-off events. [2021-12-06 18:17:40,154 INFO L130 PetriNetUnfolder]: For 8895/9600 co-relation queries the response was YES. [2021-12-06 18:17:40,168 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11333 conditions, 3021 events. 1474/3021 cut-off events. For 8895/9600 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 23784 event pairs, 33 based on Foata normal form. 160/2953 useless extension candidates. Maximal degree in co-relation 11275. Up to 1593 conditions per place. [2021-12-06 18:17:40,179 INFO L132 encePairwiseOnDemand]: 95/106 looper letters, 41 selfloop transitions, 38 changer transitions 0/155 dead transitions. [2021-12-06 18:17:40,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 155 transitions, 884 flow [2021-12-06 18:17:40,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 18:17:40,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 18:17:40,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1206 transitions. [2021-12-06 18:17:40,183 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8751814223512336 [2021-12-06 18:17:40,183 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1206 transitions. [2021-12-06 18:17:40,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1206 transitions. [2021-12-06 18:17:40,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:17:40,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1206 transitions. [2021-12-06 18:17:40,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 92.76923076923077) internal successors, (1206), 13 states have internal predecessors, (1206), 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) [2021-12-06 18:17:40,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:17:40,189 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:17:40,189 INFO L186 Difference]: Start difference. First operand has 125 places, 110 transitions, 434 flow. Second operand 13 states and 1206 transitions. [2021-12-06 18:17:40,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 155 transitions, 884 flow [2021-12-06 18:17:40,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 155 transitions, 882 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 18:17:40,197 INFO L242 Difference]: Finished difference. Result has 142 places, 130 transitions, 725 flow [2021-12-06 18:17:40,197 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=725, PETRI_PLACES=142, PETRI_TRANSITIONS=130} [2021-12-06 18:17:40,197 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 44 predicate places. [2021-12-06 18:17:40,198 INFO L470 AbstractCegarLoop]: Abstraction has has 142 places, 130 transitions, 725 flow [2021-12-06 18:17:40,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.71428571428571) internal successors, (621), 7 states have internal predecessors, (621), 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) [2021-12-06 18:17:40,198 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:17:40,198 INFO L254 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] [2021-12-06 18:17:40,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 18:17:40,210 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-06 18:17:40,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:17:40,210 INFO L85 PathProgramCache]: Analyzing trace with hash 2002957463, now seen corresponding path program 1 times [2021-12-06 18:17:40,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:17:40,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851460741] [2021-12-06 18:17:40,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:40,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:17:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:40,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:17:40,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:17:40,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851460741] [2021-12-06 18:17:40,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851460741] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:17:40,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:17:40,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:17:40,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059546552] [2021-12-06 18:17:40,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:17:40,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:17:40,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:17:40,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:17:40,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:17:40,298 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 106 [2021-12-06 18:17:40,299 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 130 transitions, 725 flow. Second operand has 8 states, 8 states have (on average 88.625) internal successors, (709), 8 states have internal predecessors, (709), 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) [2021-12-06 18:17:40,299 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:17:40,299 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 106 [2021-12-06 18:17:40,299 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:17:40,770 INFO L129 PetriNetUnfolder]: 1444/2930 cut-off events. [2021-12-06 18:17:40,770 INFO L130 PetriNetUnfolder]: For 25947/28427 co-relation queries the response was YES. [2021-12-06 18:17:40,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15982 conditions, 2930 events. 1444/2930 cut-off events. For 25947/28427 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 23424 event pairs, 5 based on Foata normal form. 269/2966 useless extension candidates. Maximal degree in co-relation 15916. Up to 1570 conditions per place. [2021-12-06 18:17:40,815 INFO L132 encePairwiseOnDemand]: 95/106 looper letters, 36 selfloop transitions, 58 changer transitions 12/182 dead transitions. [2021-12-06 18:17:40,815 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 182 transitions, 1459 flow [2021-12-06 18:17:40,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 18:17:40,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-06 18:17:40,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1485 transitions. [2021-12-06 18:17:40,820 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8755896226415094 [2021-12-06 18:17:40,821 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1485 transitions. [2021-12-06 18:17:40,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1485 transitions. [2021-12-06 18:17:40,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:17:40,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1485 transitions. [2021-12-06 18:17:40,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 92.8125) internal successors, (1485), 16 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:17:40,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 106.0) internal successors, (1802), 17 states have internal predecessors, (1802), 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) [2021-12-06 18:17:40,831 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 106.0) internal successors, (1802), 17 states have internal predecessors, (1802), 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) [2021-12-06 18:17:40,831 INFO L186 Difference]: Start difference. First operand has 142 places, 130 transitions, 725 flow. Second operand 16 states and 1485 transitions. [2021-12-06 18:17:40,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 182 transitions, 1459 flow [2021-12-06 18:17:40,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 182 transitions, 1356 flow, removed 42 selfloop flow, removed 4 redundant places. [2021-12-06 18:17:40,890 INFO L242 Difference]: Finished difference. Result has 157 places, 156 transitions, 1091 flow [2021-12-06 18:17:40,890 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1091, PETRI_PLACES=157, PETRI_TRANSITIONS=156} [2021-12-06 18:17:40,891 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 59 predicate places. [2021-12-06 18:17:40,891 INFO L470 AbstractCegarLoop]: Abstraction has has 157 places, 156 transitions, 1091 flow [2021-12-06 18:17:40,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.625) internal successors, (709), 8 states have internal predecessors, (709), 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) [2021-12-06 18:17:40,892 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:17:40,892 INFO L254 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] [2021-12-06 18:17:40,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 18:17:40,892 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-06 18:17:40,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:17:40,893 INFO L85 PathProgramCache]: Analyzing trace with hash 699587088, now seen corresponding path program 1 times [2021-12-06 18:17:40,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:17:40,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047210851] [2021-12-06 18:17:40,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:40,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:17:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:40,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:17:40,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:17:40,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047210851] [2021-12-06 18:17:40,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047210851] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:17:40,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:17:40,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:17:40,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116865662] [2021-12-06 18:17:40,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:17:40,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:17:40,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:17:40,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:17:40,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:17:40,966 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 106 [2021-12-06 18:17:40,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 156 transitions, 1091 flow. Second operand has 8 states, 8 states have (on average 85.25) internal successors, (682), 8 states have internal predecessors, (682), 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) [2021-12-06 18:17:40,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:17:40,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 106 [2021-12-06 18:17:40,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:17:41,357 INFO L129 PetriNetUnfolder]: 933/2679 cut-off events. [2021-12-06 18:17:41,357 INFO L130 PetriNetUnfolder]: For 18955/19444 co-relation queries the response was YES. [2021-12-06 18:17:41,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11767 conditions, 2679 events. 933/2679 cut-off events. For 18955/19444 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 25316 event pairs, 5 based on Foata normal form. 8/2523 useless extension candidates. Maximal degree in co-relation 11693. Up to 875 conditions per place. [2021-12-06 18:17:41,377 INFO L132 encePairwiseOnDemand]: 95/106 looper letters, 25 selfloop transitions, 10 changer transitions 7/172 dead transitions. [2021-12-06 18:17:41,377 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 172 transitions, 1271 flow [2021-12-06 18:17:41,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:17:41,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-06 18:17:41,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 789 transitions. [2021-12-06 18:17:41,379 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8270440251572327 [2021-12-06 18:17:41,379 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 789 transitions. [2021-12-06 18:17:41,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 789 transitions. [2021-12-06 18:17:41,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:17:41,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 789 transitions. [2021-12-06 18:17:41,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 87.66666666666667) internal successors, (789), 9 states have internal predecessors, (789), 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) [2021-12-06 18:17:41,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 106.0) internal successors, (1060), 10 states have internal predecessors, (1060), 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) [2021-12-06 18:17:41,383 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 106.0) internal successors, (1060), 10 states have internal predecessors, (1060), 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) [2021-12-06 18:17:41,383 INFO L186 Difference]: Start difference. First operand has 157 places, 156 transitions, 1091 flow. Second operand 9 states and 789 transitions. [2021-12-06 18:17:41,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 172 transitions, 1271 flow [2021-12-06 18:17:41,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 172 transitions, 958 flow, removed 114 selfloop flow, removed 11 redundant places. [2021-12-06 18:17:41,574 INFO L242 Difference]: Finished difference. Result has 158 places, 156 transitions, 807 flow [2021-12-06 18:17:41,574 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=807, PETRI_PLACES=158, PETRI_TRANSITIONS=156} [2021-12-06 18:17:41,575 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 60 predicate places. [2021-12-06 18:17:41,575 INFO L470 AbstractCegarLoop]: Abstraction has has 158 places, 156 transitions, 807 flow [2021-12-06 18:17:41,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.25) internal successors, (682), 8 states have internal predecessors, (682), 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) [2021-12-06 18:17:41,576 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:17:41,576 INFO L254 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] [2021-12-06 18:17:41,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 18:17:41,576 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-06 18:17:41,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:17:41,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1481751732, now seen corresponding path program 2 times [2021-12-06 18:17:41,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:17:41,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352096490] [2021-12-06 18:17:41,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:41,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:17:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:41,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:17:41,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:17:41,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352096490] [2021-12-06 18:17:41,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352096490] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:17:41,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:17:41,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 18:17:41,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623811800] [2021-12-06 18:17:41,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:17:41,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:17:41,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:17:41,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:17:41,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:17:41,669 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 106 [2021-12-06 18:17:41,670 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 156 transitions, 807 flow. Second operand has 9 states, 9 states have (on average 88.55555555555556) internal successors, (797), 9 states have internal predecessors, (797), 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) [2021-12-06 18:17:41,670 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:17:41,670 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 106 [2021-12-06 18:17:41,670 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:17:42,207 INFO L129 PetriNetUnfolder]: 1478/3174 cut-off events. [2021-12-06 18:17:42,207 INFO L130 PetriNetUnfolder]: For 6234/7041 co-relation queries the response was YES. [2021-12-06 18:17:42,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11190 conditions, 3174 events. 1478/3174 cut-off events. For 6234/7041 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 27835 event pairs, 3 based on Foata normal form. 264/3192 useless extension candidates. Maximal degree in co-relation 11158. Up to 472 conditions per place. [2021-12-06 18:17:42,226 INFO L132 encePairwiseOnDemand]: 95/106 looper letters, 25 selfloop transitions, 57 changer transitions 37/195 dead transitions. [2021-12-06 18:17:42,226 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 195 transitions, 1300 flow [2021-12-06 18:17:42,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 18:17:42,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-06 18:17:42,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1743 transitions. [2021-12-06 18:17:42,228 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.865441906653426 [2021-12-06 18:17:42,228 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1743 transitions. [2021-12-06 18:17:42,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1743 transitions. [2021-12-06 18:17:42,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:17:42,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1743 transitions. [2021-12-06 18:17:42,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 91.73684210526316) internal successors, (1743), 19 states have internal predecessors, (1743), 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) [2021-12-06 18:17:42,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 106.0) internal successors, (2120), 20 states have internal predecessors, (2120), 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) [2021-12-06 18:17:42,234 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 106.0) internal successors, (2120), 20 states have internal predecessors, (2120), 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) [2021-12-06 18:17:42,234 INFO L186 Difference]: Start difference. First operand has 158 places, 156 transitions, 807 flow. Second operand 19 states and 1743 transitions. [2021-12-06 18:17:42,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 195 transitions, 1300 flow [2021-12-06 18:17:42,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 195 transitions, 1261 flow, removed 8 selfloop flow, removed 8 redundant places. [2021-12-06 18:17:42,303 INFO L242 Difference]: Finished difference. Result has 171 places, 147 transitions, 842 flow [2021-12-06 18:17:42,303 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=842, PETRI_PLACES=171, PETRI_TRANSITIONS=147} [2021-12-06 18:17:42,303 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 73 predicate places. [2021-12-06 18:17:42,303 INFO L470 AbstractCegarLoop]: Abstraction has has 171 places, 147 transitions, 842 flow [2021-12-06 18:17:42,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 88.55555555555556) internal successors, (797), 9 states have internal predecessors, (797), 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) [2021-12-06 18:17:42,304 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:17:42,304 INFO L254 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] [2021-12-06 18:17:42,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 18:17:42,304 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-06 18:17:42,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:17:42,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1894734027, now seen corresponding path program 1 times [2021-12-06 18:17:42,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:17:42,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120874818] [2021-12-06 18:17:42,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:17:42,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:17:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:17:42,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:17:42,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:17:42,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120874818] [2021-12-06 18:17:42,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120874818] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:17:42,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:17:42,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:17:42,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255043279] [2021-12-06 18:17:42,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:17:42,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:17:42,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:17:42,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:17:42,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:17:42,368 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 106 [2021-12-06 18:17:42,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 147 transitions, 842 flow. Second operand has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 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) [2021-12-06 18:17:42,369 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:17:42,369 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 106 [2021-12-06 18:17:42,369 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:17:42,646 INFO L129 PetriNetUnfolder]: 956/2842 cut-off events. [2021-12-06 18:17:42,646 INFO L130 PetriNetUnfolder]: For 6398/6676 co-relation queries the response was YES. [2021-12-06 18:17:42,660 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8647 conditions, 2842 events. 956/2842 cut-off events. For 6398/6676 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 28859 event pairs, 2 based on Foata normal form. 1/2659 useless extension candidates. Maximal degree in co-relation 8573. Up to 347 conditions per place. [2021-12-06 18:17:42,662 INFO L132 encePairwiseOnDemand]: 100/106 looper letters, 0 selfloop transitions, 0 changer transitions 150/150 dead transitions. [2021-12-06 18:17:42,662 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 150 transitions, 907 flow [2021-12-06 18:17:42,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:17:42,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-06 18:17:42,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 629 transitions. [2021-12-06 18:17:42,663 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8477088948787062 [2021-12-06 18:17:42,663 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 629 transitions. [2021-12-06 18:17:42,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 629 transitions. [2021-12-06 18:17:42,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:17:42,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 629 transitions. [2021-12-06 18:17:42,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.85714285714286) internal successors, (629), 7 states have internal predecessors, (629), 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) [2021-12-06 18:17:42,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 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) [2021-12-06 18:17:42,666 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 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) [2021-12-06 18:17:42,666 INFO L186 Difference]: Start difference. First operand has 171 places, 147 transitions, 842 flow. Second operand 7 states and 629 transitions. [2021-12-06 18:17:42,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 150 transitions, 907 flow [2021-12-06 18:17:42,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 150 transitions, 743 flow, removed 19 selfloop flow, removed 22 redundant places. [2021-12-06 18:17:42,726 INFO L242 Difference]: Finished difference. Result has 149 places, 0 transitions, 0 flow [2021-12-06 18:17:42,726 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=149, PETRI_TRANSITIONS=0} [2021-12-06 18:17:42,727 INFO L334 CegarLoopForPetriNet]: 98 programPoint places, 51 predicate places. [2021-12-06 18:17:42,727 INFO L470 AbstractCegarLoop]: Abstraction has has 149 places, 0 transitions, 0 flow [2021-12-06 18:17:42,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 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) [2021-12-06 18:17:42,729 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2021-12-06 18:17:42,729 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2021-12-06 18:17:42,729 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2021-12-06 18:17:42,729 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 5 remaining) [2021-12-06 18:17:42,729 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION (0 of 5 remaining) [2021-12-06 18:17:42,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 18:17:42,732 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:17:42,734 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-06 18:17:42,734 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 18:17:42,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:17:42 BasicIcfg [2021-12-06 18:17:42,736 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 18:17:42,736 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 18:17:42,736 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 18:17:42,736 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 18:17:42,737 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:17:36" (3/4) ... [2021-12-06 18:17:42,739 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 18:17:42,743 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-12-06 18:17:42,743 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-12-06 18:17:42,743 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-12-06 18:17:42,744 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2021-12-06 18:17:42,747 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-12-06 18:17:42,747 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-06 18:17:42,747 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 18:17:42,747 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 18:17:42,770 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1ae0b2-0b57-4f78-9912-73ffe10d26a4/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 18:17:42,770 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 18:17:42,770 INFO L158 Benchmark]: Toolchain (without parser) took 6764.16ms. Allocated memory was 121.6MB in the beginning and 388.0MB in the end (delta: 266.3MB). Free memory was 79.0MB in the beginning and 158.3MB in the end (delta: -79.3MB). Peak memory consumption was 190.1MB. Max. memory is 16.1GB. [2021-12-06 18:17:42,771 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 121.6MB. Free memory is still 96.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:17:42,771 INFO L158 Benchmark]: CACSL2BoogieTranslator took 335.34ms. Allocated memory is still 121.6MB. Free memory was 78.9MB in the beginning and 98.3MB in the end (delta: -19.4MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2021-12-06 18:17:42,771 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.49ms. Allocated memory is still 121.6MB. Free memory was 98.3MB in the beginning and 96.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:17:42,771 INFO L158 Benchmark]: Boogie Preprocessor took 18.95ms. Allocated memory is still 121.6MB. Free memory was 96.5MB in the beginning and 95.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:17:42,772 INFO L158 Benchmark]: RCFGBuilder took 270.98ms. Allocated memory is still 121.6MB. Free memory was 95.0MB in the beginning and 81.8MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 18:17:42,772 INFO L158 Benchmark]: TraceAbstraction took 6058.58ms. Allocated memory was 121.6MB in the beginning and 388.0MB in the end (delta: 266.3MB). Free memory was 81.3MB in the beginning and 161.4MB in the end (delta: -80.2MB). Peak memory consumption was 187.8MB. Max. memory is 16.1GB. [2021-12-06 18:17:42,772 INFO L158 Benchmark]: Witness Printer took 33.76ms. Allocated memory is still 388.0MB. Free memory was 161.4MB in the beginning and 158.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-06 18:17:42,774 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 121.6MB. Free memory is still 96.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 335.34ms. Allocated memory is still 121.6MB. Free memory was 78.9MB in the beginning and 98.3MB in the end (delta: -19.4MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.49ms. Allocated memory is still 121.6MB. Free memory was 98.3MB in the beginning and 96.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.95ms. Allocated memory is still 121.6MB. Free memory was 96.5MB in the beginning and 95.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 270.98ms. Allocated memory is still 121.6MB. Free memory was 95.0MB in the beginning and 81.8MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6058.58ms. Allocated memory was 121.6MB in the beginning and 388.0MB in the end (delta: 266.3MB). Free memory was 81.3MB in the beginning and 161.4MB in the end (delta: -80.2MB). Peak memory consumption was 187.8MB. Max. memory is 16.1GB. * Witness Printer took 33.76ms. Allocated memory is still 388.0MB. Free memory was 161.4MB in the beginning and 158.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 135 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.0s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 640 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 640 mSDsluCounter, 803 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 845 mSDsCounter, 206 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 958 IncrementalHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 206 mSolverCounterUnsat, 179 mSDtfsCounter, 958 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 175 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1091occurred in iteration=9, InterpolantAutomatonStates: 142, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 832 NumberOfCodeBlocks, 832 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 820 ConstructedInterpolants, 0 QuantifiedInterpolants, 3462 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-06 18:17:42,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1ae0b2-0b57-4f78-9912-73ffe10d26a4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE